TP405 low carbon stainless steel pipe is an ideal choice for both heat resistance and welding performance

Introduction to TP405 low carbon stainless steel pipe material and analysis of chemical composition

TP405 is a low-carbon stainless steel containing about 12% chromium, ensuring its basic corrosion resistance. Its carbon content is low (no more than 0.08%), which reduces the risk of carbide precipitation and improves welding performance and overall stability. In addition, TP405 low carbon stainless steel pipe also contains appropriate amounts of manganese, silicon, phosphorus and sulfur, and combined with trace amounts of titanium and nitrogen, further improving the mechanical properties and corrosion resistance of the material. This ingredient design enables TP405 low carbon stainless steel pipe to exhibit good hardening resistance and thermal stability in high temperature environments, and is suitable for applications in a variety of industrial fields.

1.Low carbon content to improve welding adaptability

The carbon content of TP405 low carbon stainless steel pipe is limited to below 0.08%, which is greatly reduced in the intergranular corrosion tendency compared with ordinary martensitic stainless steel. During welding, high temperatures can easily promote the combination of carbon and chromium to form carbides, reducing the chromium content and weakening the corrosion resistance. The low carbon properties of TP405 effectively slow down the process, so that it can maintain good performance after welding without complicated heat treatment. At the same time, this characteristic helps prevent the formation of thermal cracks and improves the structural stability and ductility of the welding area. It is widely used in welding structural parts that require high strength and high sealing, such as pressure vessels, heat exchange systems, etc.

2.The chromium content ensures basic corrosion resistance

TP405 low carbon stainless steel pipe contains 11.5% to 14.5% chromium (Cr), which is the core element that gives it corrosion resistance. Chromium can react with oxygen to form a dense chromium oxide passivation film, preventing the continued diffusion of the oxidation reaction, thereby protecting the internal structure of the metal from erosion. This allows the TP405 to maintain good appearance and performance even in humid environments and weak acid-base atmospheres. Its corrosion resistance is comparable to TP410 in most atmospheric environments and can be used as an economical alternative to corrosion-sensitive occasions for high-carbon stainless steel.

3.Reasonably proportioned auxiliary elements to improve overall performance

In the component system of TP405 low carbon stainless steel pipe, auxiliary elements such as manganese (Mn), silicon (Si), phosphorus (P), and sulfur (S) have their own unique functions:

Manganese (Mn) - Improve strength and deoxidation ability

The manganese content in TP405 low carbon stainless steel pipe can be up to 1.0%, and its main functions include:

Deoxidation function: During the steelmaking process, manganese can combine with oxygen to form MnO, effectively remove oxygen from the molten steel, prevent the formation of oxidized inclusions, and thus improve the purity of the steel.

Improve strength and toughness: An appropriate amount of manganese can improve the strength and impact toughness of steel and enhance its reliability in low temperature and stress environments.

Assist in corrosion resistance: Manganese also has a certain auxiliary effect on pitting and crevice corrosion, and helps to stabilize the formation of passivation film.

Silicon (Si) - Enhance oxidation resistance and high temperature strength

The silicon content in TP405 low carbon stainless steel pipe is also controlled at ≤1.0%, and its advantages are mainly reflected in:

Improve oxidation resistance: Silicon can promote the stability of the oxide film at high temperature and improve the material's oxidation resistance in high temperature air or steam environment.

Strengthen high temperature strength: Silicon helps maintain structural stability and strength in high temperature environments and delays creep and fatigue failure caused by temperature.

Auxiliary deoxidation: Silicon also participates in deoxidation during the steelmaking process, and works synergistically with manganese to help improve material quality.

Phosphorus (P) - Improve machinability within the control range

Although the phosphorus content must be strictly limited (TP405 stipulates P ≤ 0.04%), it has the following benefits in small doses:

Improve cutting performance: Phosphorus can slightly increase the hardness of steel, which is conducive to the formation of short chips during cutting and improves processing efficiency.

Enhance wear resistance and machinability: Trace phosphorus helps improve the cutting stability of the material surface and is suitable for occasions that require batch turning, drilling, wire drawing, etc.

Note: Too high phosphorus content will reduce the plasticity and toughness of steel, so it must be precisely controlled.

Sulfur (S) - Improves machinability but requires strict control of content

Sulfur is also controlled in TP405 low carbon stainless steel pipe (S ≤ 0.03%), and its functions include:

Improving automated processing performance: trace sulfur can form sulfide inclusions (such as MnS) in steel, which can act as cutting fracture points and improve processing accuracy and speed.

Improving metal surface lubricity: Less wear on tools, good economy in high-speed cutting.

However, if the sulfur content is too high, it will cause hot brittleness problems and welding cracks. Therefore, keeping a trace amount in TP405 is a necessary strategy to balance processability and structural integrity.

Multi-element synergy to improve stability after forming and heat treatment

The formulation design of TP405 low carbon stainless steel pipe material emphasizes the synergistic effect between elements:

Manganese and silicon jointly improve deoxidation efficiency and structural purity;

Although phosphorus and sulfur are impurity elements, they significantly improve processing performance within a controllable range;

After high temperature or heat treatment, the material will not become brittle or have structural instability due to impurity segregation.

4.Trace titanium element improves grain stability

The titanium (Ti) content is controlled at 0.1%–0.3%, which mainly plays a role in "stabilizing carbon" in stainless steel. It preferentially combines with carbon to produce titanium carbide, preventing carbon and chromium from forming chromium carbide, thereby avoiding the depletion of chromium and improving grain stability and intergranular corrosion resistance at high temperatures. Especially in thermal cycle processes such as welding and thermal processing, TP405 low carbon stainless steel pipe avoids embrittlement of the heat-affected zone with the stabilization effect of titanium elements, which is conducive to maintaining strength and toughness in the area around the weld.

5.Optimized strength and molding properties of nitrogen elements

Although the nitrogen content in TP405 low carbon stainless steel pipe is low (N ≤ 0.03%), its effect cannot be ignored. As a solid solution reinforcement element, nitrogen can significantly improve the yield strength of steel and has little impact on ductility. Its ability to strengthen the lattice structure makes the TP405 low carbon stainless steel pipe stable in plastic processing (such as drawing and spinning), reducing the risk of cracks during molding. In addition, nitrogen can improve the pitting resistance of steel and is suitable for industries with higher requirements for surface quality and corrosion resistance, such as automotive exhaust systems, home appliance shells, combustion chamber components, etc.

6.The overall composition supports high temperature and stable application

The alloy composition design of TP405 low carbon stainless steel pipe not only focuses on corrosion resistance and welding, but also its long-term stability in high temperature environments. At 649°C (1200°F), the material is not prone to precipitation of brittle phases, strength drops or surface oxidation and peeling, and can maintain stable structural and mechanical properties for long-term operation. In addition, its low hardening tendency will not become brittle after cooling at high temperature, thereby avoiding thermal stress cracks. It is suitable for boiler pipes, heat exchangers, automobile exhaust pipes, gas heating systems, etc. where heat resistance and corrosion resistance are coexisting.

Excellent heat resistance and long-term thermal stability

The TP405 low carbon stainless steel pipe is able to maintain structural stability for a long time at temperatures up to 1200°F (approximately 649°C) without significant performance degradation. This heat resistance and stability enables it to maintain good strength and toughness in high-temperature operating conditions, and is suitable for equipment and pipelines that need to withstand high-temperature environments. The stability of this material ensures service life and reduces the risk of failure caused by thermal fatigue or high temperature corrosion.

1.Working temperature resistance up to 1200°F (649°C)

One of the biggest highlights of TP405 low carbon stainless steel pipe is its excellent high temperature adaptability. It can operate stably for a long time in a 649°C (1200°F) environment without structural degradation.

Structural stability: Even under continuous or periodic high temperature conditions, its metallographic structure remains dense, and it is not easy to coarsen grains, ensuring that the mechanical strength does not decrease.

Equipment safety guarantee: For equipment such as boilers and exhaust systems that work continuously at high temperatures, the stability of the material is directly related to the safe operation and service life of the equipment.

Avoid thermal deformation and structural failure: TP405 has strong resistance to high temperature creep, which can effectively prevent the material from plastic deformation or fracture under continuous stress at high temperature.

2. Maintain good thermal strength and not easy to soften or fail

In medium and high temperature conditions, the material often suffers from strength decay due to thermal effects, and TP405 is particularly stable in this regard.

High temperature tensile strength: Even in a temperature environment above 500°C, its tensile and yield strengths can still meet the pressure requirements under medium loads.

Suitable for pressure pipes and structural parts: Since TP405 does not soften quickly after being heated, it can be used for parts that need to be continuously under pressure, such as boiler tubes and heat exchange systems.

Reduce the risk of structural deformation: Especially in high-temperature assembly or continuously running equipment, material deformation will cause installation errors or operating deviations, and TP405 can avoid this problem.

3.Good thermal fatigue resistance

Repeated heating and cooling at high temperatures is the norm in many industrial applications, and the material must have excellent thermal fatigue resistance.

Thermal cycle adaptability: TP405 low carbon stainless steel pipe has a strong stress relief ability for repeated thermal expansion and contraction, and it is not easy to form crack sources in the microstructure.

Extend equipment replacement cycle: Thermal fatigue is an important cause of damage to high-temperature equipment. The use of TP405 low carbon stainless steel pipe can effectively extend the replacement cycle of exhaust manifolds, gas furnace components, etc.

Improve industrial safety factor: In an environment with frequent high-temperature shocks and drastic load changes, TP405 low carbon stainless steel pipe materials can maintain structural integrity and improve the reliability and safety of equipment operation.

4.High thermal stability, maintaining unchanged structure

TP405 low carbon stainless steel pipe can maintain stable metal structure during high temperature treatment and use due to its optimized composition design of low carbon, high chromium and titanium.

Avoid harmful phase precipitation: For example, σ phase or chromium carbide may cause embrittlement in austenitic steel, but in TP405, due to the low carbon content and the combination of titanium and carbon, such structure can be effectively avoided.

Improve the consistency of performance after welding: The structure of the heat affected zone of welding does not change significantly, which can effectively reduce the performance attenuation after welding.

Suitable for use after welding and hot processing: Even after high temperature forming, welding or thermal cycle treatment, the strength, toughness and other properties of TP405 can basically remain consistent, which is convenient for subsequent industrial applications.

5.Reduce damage caused by high temperature corrosion and oxidation

When operating at high temperature, metals are easily oxidized and corroded when exposed to oxygen-containing, humid or corrosive media. TP405 performs well in this regard.

Forming a dense passivation film: The chromium content reaches 11.5~14.5%, which can quickly form a layer of Cr₂O₃ protective film on the material surface to block further contact between oxygen and water vapor.

Slowing down metal peeling: Avoid changes in the inner diameter of the pipeline, surface failure or increased wear due to the shedding of oxide scale.

Applicable to a variety of corrosive atmospheres: such as hot steam, exhaust gas, nitrogen, a small amount of acidic flue gas, etc. TP405 low carbon stainless steel pipe has excellent protective performance in these environments.

Welding hardening resistance and reduce the risk of welding cracks

TP405 low carbon stainless steel pipe has the characteristics of resisting air-cooling hardening, which can effectively avoid hardening problems caused by rapid cooling after welding and reduce the occurrence of welding cracks. Compared with other high-chromium stainless steel materials, TP405 low carbon stainless steel pipe has stronger stability in the welding process, and is not prone to brittle fracture in the weld area, which greatly improves the welding quality and structural safety. This feature makes it widely used in manufacturing and repair fields that require high-quality welding.

1.Air-cooling hardening resistance to avoid post-weld embrittlement

TP405 steel exhibits excellent air-cooling hardening resistance due to its low carbon content and unique alloy design. This means that during the welding process, when the weld and its heat-affected zone (HAZ) are rapidly cooled by air after high-temperature melting, the hardening phenomenon that is prone to occur in traditional high-chromium steel will not occur.

When traditional high-chromium steel is rapidly cooled, the martensite phase is easily generated, resulting in a sudden increase in the hardness of the weld, which becomes brittle and easy to crack.

TP405 inhibits the formation of martensite to ensure that the metal in the weld area maintains good toughness and ductility, effectively reducing the risk of brittle fracture.

This feature is particularly important in complex structures and multi-layer welding scenarios to ensure that the weld has sufficient impact resistance and prolongs the service life of the structure.

2.Reduce the risk of welding cracks and ensure structural integrity

The formation of welding cracks usually originates from the hardening of the weld and the heat-affected zone and the accumulation of local thermal stress. TP405's excellent hardening resistance enables the material to relieve these stress concentrations.

During the cooling process of welding, the plasticity of the material can absorb and disperse thermal stress, avoiding crack initiation caused by excessive stress concentration.

The high content of chromium gives the material good corrosion resistance, preventing the weld area from accelerating the expansion of fatigue cracks due to corrosion during use.

This comprehensive performance significantly improves the integrity and reliability of the welded structure, especially for high load and high vibration conditions.

3.Stronger stability during welding

Compared with ordinary high-chromium stainless steel, TP405 low carbon stainless steel pipe significantly improves the structural stability during welding thermal cycles by strictly controlling the low carbon content and adding titanium.

Titanium combines with carbon to form stable titanium carbide, preventing carbon from depositing at the grain boundary, avoiding intergranular corrosion and embrittlement.

The low-carbon design reduces carbide precipitation, maintains a uniform structure of the metal, and prevents the formation of hard and brittle phases in the welding area.

This stable microstructure reduces welding defects such as pores and slag inclusions, ensuring the density of the weld and the consistency of mechanical properties.

4.Improve welding quality and manufacturing reliability

TP405 low carbon stainless steel pipe is suitable for a variety of welding processes, has a wide welding process window, is flexible to operate and has significant results.

Whether it is TIG (tungsten inert gas welding), MIG (metal inert gas welding), or traditional manual arc welding, TP405 can achieve high-quality welds.

The material welding process is easy to control, the weld is beautiful, the defect rate is low, and the later repair and processing costs are significantly reduced.

The mechanical properties of the weld are highly consistent with the parent material, ensuring the overall strength and durability of the welded structure and improving the safety factor of the product.

5.Widely used in fields with high welding quality requirements

TP405's resistance to welding hardening makes it the preferred material for many industries with high welding quality requirements.

In the boiler manufacturing industry, TP405 ensures the safety and reliability of welds under high temperature and high pressure environments, and prevents equipment failures caused by weld brittle cracking.

The use of TP405 low carbon stainless steel pipe in automobile exhaust systems not only improves heat resistance, but also ensures the stability and lightweight of complex welded structures.

In petrochemical equipment and industrial machinery, TP405 ensures that welded joints resist corrosion and thermal fatigue, extends equipment maintenance cycles, and improves production continuity.

These applications ensure the long-term stable operation of welded structures under harsh working conditions, and guarantee industrial safety and efficiency.

Good machining performance and molding adaptability

TP405, as a ferritic low-carbon stainless steel, has excellent processing friendliness and forming flexibility, and is one of the ideal structural materials in mechanical processing and manufacturing. Its performance is not only reflected in the ease of operation in conventional machining processes, but is also widely used in the mass production of complex geometric components and high-precision parts.

1.Excellent cutting and turning performance, improving processing efficiency

TP405 low carbon ferritic stainless steel has a stable metallographic structure and moderate hardness, which makes it particularly superior in the cutting process. The material structure is uniform, which reduces the impact and vibration of the tool caused by uneven structure, thereby extending the tool life.

Reduce work hardening: Compared with other stainless steel materials, TP405 is not prone to surface work hardening, which avoids the problem of increased tool load due to hardening of the material during processing.

Smooth cutting and excellent surface quality: The tool forms continuous chips on the surface of the material, reducing burrs and surface roughness, and reducing the workload of subsequent polishing and finishing.

Efficient adaptation to automated equipment: TP405 can adapt to the high-speed operation of CNC machining centers and automatic lathes, achieve high-precision batch production, and improve production efficiency and consistency.

2.Good stretching and spinning performance, suitable for deep processing parts manufacturing

TP405 low carbon stainless steel pipe has good plasticity and crack resistance, and is particularly suitable for deep processing processes that require deformation.

Multiple cold drawing forming: The material allows multiple stretching without breaking, ensuring the stability of the pipe size after stretching, avoiding product deformation or strength loss.

Uniformity of spinning forming: During the spinning process, the material thickness is evenly distributed, and no cracks or excessive thinning will occur, ensuring the mechanical properties and service life of the parts.

3.Suitable for the forming of structural parts with complex geometric shapes

TP405's good plasticity enables it to adapt to a variety of cold forming processes and meet the needs of modern manufacturing for complex shaped parts.

Bending, curling and stamping: The material can be processed with a variety of bending angles and shapes, and the edges of the formed parts are neat and free of cracking.

Manufacturing special-shaped parts: It can meet the manufacturing requirements of complex special-shaped pipe fittings, flanges, shell covers and other parts, and achieve high precision and high repeatability.

High dimensional consistency: It is suitable for the production of precision parts with strict dimensional tolerances, ensuring the precise fit of the final product during assembly and use.

4.Good dimensional stability after processing, easy for mass production control

Dimensional stability is the key to efficient production and quality control, and TP405 low carbon stainless steel pipe performs well in this regard.

Low rebound rate: The shape of the material after processing remains stable, reducing secondary adjustments and rework, and is particularly suitable for mold processing and continuous production lines.

Prevent cracking and wrinkling: The cracking and wrinkling phenomenon during the processing process is greatly reduced, which improves the yield rate and reduces the scrap rate.

Controllability of mass production: The stability of size and shape makes the difference between batch processed parts small, which helps to achieve standardized and automated production.

5. Reduce working hours and manufacturing costs

Excellent processing adaptability not only improves production efficiency, but also significantly reduces manufacturing costs.

Reduce tool replacement and maintenance times: Good material processing performance reduces tool wear, extends tool life, and reduces equipment downtime.

Save processing paths and coolant use: Smooth cutting during processing, simplified processes, reduced coolant requirements, environmental protection and cost savings.

Reduce manual operation intensity: Easy material processing reduces operational difficulty, improves safety and labor efficiency, and is suitable for automated production environments.

Excellent corrosion resistance and oxidation resistance comparison

The corrosion resistance and oxidation resistance of TP405 are similar to those of TP410, and both have good surface passivation capabilities due to its chromium content of about 12%. Its surface forms a stable oxide film in an oxidizing environment to prevent further corrosion and is suitable for humid or slightly corrosive environments. Although not as high-nickel stainless steel grade as high-nickel stainless steel, it is cost-effective and suitable for protection needs in most ordinary industrial environments.

1.Chromium content is about 12%, forming a stable passivation film

TP405 low carbon stainless steel pipe contains about 11.5% to 14.5% chromium, which is the core guarantee of its corrosion resistance. Chromium can spontaneously form a dense and continuous chromium oxide passivation film on the surface of steel. This passivation film can effectively isolate external oxygen and moisture, preventing further oxidation and corrosion of the metal matrix. Even if the passivation film is destroyed by mechanical damage or chemical action, it can quickly self-repair and maintain a continuous protective effect. This self-repairing ability greatly improves the durability and service life of the material in complex environments.

2. Similar corrosion resistance performance to TP410

TP405 and TP410 are both ferritic stainless steels, and the two have similar corrosion resistance. They show good stability in neutral or weakly corrosive environments, such as atmospheric environment, fresh water, and low-concentration acid and alkali solutions. Therefore, TP405 is very suitable for industrial equipment, building structures, and automotive parts. Although its resistance to pitting and crevice corrosion is slightly insufficient compared to nickel-containing austenitic stainless steel, ferritic stainless steel has more outstanding resistance to stress corrosion cracking and is suitable for use in certain specific environments.

3.Good oxidation resistance, suitable for high-temperature oxidation environment

TP405 low carbon stainless steel pipe has good oxidation resistance and is especially suitable for use in high-temperature environments. It can withstand oxidation environments at 600°C or even higher temperatures, and a dense and stable oxide film will form on the surface, effectively preventing further oxygen intrusion and delaying the growth and loss of the oxide layer on the surface of the material. This feature makes TP405 widely used in high-temperature equipment such as boiler pipes, automobile exhaust systems and various industrial furnace pipes to ensure long-term stable operation of the equipment under high-temperature conditions.

4.Significant cost-effectiveness

Compared with austenitic stainless steel with a higher nickel content, TP405 low carbon stainless steel pipe has a more cost advantage. Because its main alloying element is chromium and contains no or only a very small amount of nickel, the material price is relatively low, but it still maintains excellent corrosion resistance. In non-extreme corrosion environments, TP405 can provide sufficient protection and effectively meet most industrial needs. This combination of cost and performance makes it an economical and practical choice for a large number of equipment and pipeline manufacturing.

5.Wide range of applicable environments

TP405 low carbon stainless steel pipe is applicable to a wide range of environments, especially for humid, mildly corrosive and medium temperature conditions. For example, in humid air environments, light acid and alkali media and steam environments, TP405 exhibits good corrosion resistance. It should be noted that TP405 is not suitable for use in environments exposed to strong acids, strong alkalis or high chloride concentrations, otherwise it may cause increased corrosion of the material. Therefore, the key to ensuring material performance and service life is to reasonably select the use environment and give full play to its corrosion resistance advantages.

 

Material advantages of TP405 low carbon stainless steel pipe

TP405 is a ferritic low carbon stainless steel containing 12% chromium. With its excellent high temperature performance, welding adaptability and forming processability, it has shown significant material advantages in many industrial applications.

1.Excellent heat resistance and long-term thermal stability

TP405 low carbon stainless steel pipe can maintain excellent physical and chemical stability in high temperature environments and adapt to a variety of harsh working conditions.

High temperature structural stability: The material can still maintain fine and uniform grains at temperatures up to 649°C (1200°F), avoiding the degradation of mechanical properties caused by grain coarsening.

Thermal fatigue resistance: In the repeated heating and cooling cycle conditions, TP405 will not produce cracks or deformation, ensuring the long-term safe operation of the equipment.

High temperature oxidation resistance: The passivation film formed on the surface can effectively resist oxidation corrosion. Even in high temperature oxidation environments such as heat exchangers and exhaust pipes, the material remains stable and durable.

2.Excellent resistance to welding hardening

TP405's unique low carbon and titanium strengthening design makes it difficult to harden the weld area after welding, greatly reducing the risk of welding defects.

Avoid martensitic hardening: No brittle martensitic phase transformation occurs during air cooling after welding, and the weld toughness remains good.

Reduce the risk of welding cracks: The plasticity of the material allows the thermal stress generated during welding to be effectively relieved, reducing the occurrence of thermal cracks.

Save process costs: Post-weld heat treatment is usually not required, simplifying the manufacturing process, reducing production time and cost.

Suitable for thick walls and large structures: High welding quality ensures the safety and reliability of complex and heavy structures.

3.Good corrosion and oxidation resistance

The chromium content of TP405 low carbon stainless steel pipe ensures its good corrosion resistance and adaptability to a variety of chemical and environmental conditions.

Dense passivation film formation: Chromium forms a stable oxide film on the surface, which effectively prevents oxygen and corrosive media from invading the metal.

Steam and oxidizing gas corrosion resistance: Even in high-temperature steam and oxygen-rich environments, it can maintain surface integrity and extend the life of pipelines and equipment.

4.Excellent forming and processing performance

TP405 low carbon stainless steel pipe has good strength and plasticity, and supports a variety of complex machining and forming processes.

Cutting and processing stability: Low tool wear and high processing efficiency during turning, milling and drilling.

Suitable for cold processing: The material has good tensile and spinning properties and can be made into pipes, flanges and shells with complex shapes.

Excellent quality of finished products: The surface after processing is smooth, reducing the risk of defects in subsequent welding and coating processes.

5.Low carbon ratio to improve the overall toughness of the material

TP405 low carbon stainless steel pipe controls the carbon content below 0.08%, effectively inhibits the precipitation of carbides, and improves corrosion resistance and welding performance.

Effectively inhibit carbide precipitation and improve material stability

The carbon content is controlled below 0.08%, which greatly reduces the possibility of carbide precipitation at high temperature.

Carbide precipitation often forms hard and brittle phases at the grain boundary, leading to intergranular corrosion and brittle cracking.

The low carbon ratio avoids this phenomenon, keeping the grain boundary clean and the structure uniform.

This is particularly important for the heat affected zone of welding, which can reduce the embrittlement and performance degradation of the material after welding.

Reduce the risk of intergranular corrosion and increase the service life

Intergranular corrosion is local corrosion caused by changes in the chemical composition of the grain boundary area, which can easily lead to structural damage.

The low carbon ratio combined with the stabilization of titanium effectively avoids the occurrence of intergranular corrosion.

Ensure the safety and durability of welding structures and high-temperature equipment in harsh environments.

It is particularly important in highly corrosive application environments such as chemical industry and energy.

Maintain good toughness and ductility and improve crack resistance

The low carbon content reduces the formation of hard and brittle phases, ensuring the overall toughness and plasticity of the material.

In the heat affected zone of welding, the material still maintains good crack resistance and impact resistance.

Reduce the probability of hot cracks and cold cracks, and improve the safety factor of the structure.

It is conducive to the stable manufacturing and long-term service of complex welded structures.

Optimize welding performance, reduce rework rate and manufacturing cost

Low carbon ratio reduces the risk of defects caused by carbide precipitation during welding.

The weld and heat affected zone have uniform structure, good toughness, and higher welding quality.

Reduce the rework rate and scrap rate caused by welding defects, saving production costs.

It expands the application range of materials in welded structures and is suitable for the manufacture of thick plates and complex components.

6.Industrial-grade materials with high stability and reliability

TP405 meets many international standards, has excellent performance indicators, and is widely used in many engineering fields.

Excellent mechanical properties: tensile strength ≥415 MPa, yield strength ≥205 MPa, elongation ≥20%, ensuring both structural strength and toughness.

Moderate hardness: hardness ≤95 HRB, easy to process and durable.

Wide range of applications: suitable for boiler tubes, heat exchange equipment, automobile exhaust systems, petrochemical pipelines, etc., meeting high industrial standards.

Reliable quality assurance: passed international certifications such as ASTM A268 to ensure stable and consistent material quality and meet long-term safe use.

Wide application fields of TP405 low-carbon stainless steel pipe

TP405 low carbon stainless steel pipe is widely used in many high-temperature, highly corrosive or good welding performance industrial scenarios due to its excellent heat resistance, excellent processing performance, and good corrosion and oxidation resistance.

1.Power energy industry: boiler and heat exchanger pipes

TP405 low carbon stainless steel pipe is widely used in various thermal equipment in the power industry due to its excellent high-temperature stability and oxidation resistance:

Boiler system: In coal-fired or gas-fired power plants, boiler pipes need to be in a high-temperature and high-pressure environment for a long time. TP405 can still maintain a stable organizational structure at a temperature of about 600°C, and is not prone to grain coarsening, hardening or brittle cracking.

Heat exchangers and preheaters: Suitable for heat exchange equipment with high heat transfer efficiency requirements and strong corrosion resistance requirements, which helps to improve thermal energy utilization efficiency and equipment life.

Air heaters and steam pipelines: With excellent thermal fatigue performance, they can withstand frequent hot and cold cycles and are suitable for dynamic heat load conditions.

2.Automobile industry: exhaust system and heat protection parts

TP405 low carbon stainless steel shows extremely high practical value in automobile manufacturing:

Exhaust system components: such as exhaust manifolds, exhaust pipes, catalyst housings, exhaust mufflers and other parts, need to be resistant to high temperature impact and gas corrosion.

Heat protection parts and heat shields: Its low hardening characteristics prevent the material from becoming brittle during high-temperature cooling, which helps the components to be used for a long time without deformation.

Lightweight manufacturing: Good forming and welding properties make it suitable for stamping, spinning and other processes, meeting the needs of automobile energy conservation and emission reduction for lightweight components.

3.Petrochemical industry: high-temperature gas transportation and reaction devices

TP405 is suitable for a variety of complex chemical environments:

High-temperature transportation pipelines: For the transportation of high-temperature gases such as ammonia, hydrogen sulfide, hydrogen chloride, etc., the material needs to have both corrosion resistance and thermal strength.

Reactor equipment: In thermal reaction, cracking or catalysis, TP405 as a heat-resistant component material can operate stably and reduce the frequency of equipment maintenance.

Complex welding structure: titanium is added to inhibit intergranular corrosion, improve the durability of welded joints in high temperature atmosphere, and is suitable for structural connection of large chemical equipment.

4.Industrial furnaces and heating equipment: furnace tubes, combustion chamber liners

TP405's high temperature oxidation resistance makes it an ideal material for industrial heat treatment equipment:

Heating furnace tubes and furnace body components: such as radiation tubes, sheaths, shunt pipes, etc., are required not to peel or lose stability under long-term high temperature.

Burner components: can be used as combustion nozzles, flame tubes, reheating components, etc., to withstand direct flame radiation and have stable structures.

Hot processing industry: used in metal heat treatment furnaces, ceramic sintering furnaces and other equipment, can reduce the cost of frequent replacement of parts due to oxidation.

5.Food and pharmaceutical industry: steam equipment and sterilization system

TP405 has both high temperature resistance and metal safety, and meets the standards of the food and pharmaceutical industry:

Steam heating and sterilization devices: in high temperature and humid environment, it shows excellent resistance to steam corrosion.

Cleanliness and metal precipitation control: low-carbon, low-impurity metal components meet food contact safety requirements and are suitable for aseptic process flows.

Long equipment life: during continuous steam sterilization and high-temperature cleaning, it is not easy to oxidize and peel, which helps maintain the sealing and cleanliness of the pipeline system.

6.Construction and environmental protection industry: flue gas treatment and hot air recovery system

TP405 has comprehensive performance advantages in green building and environmental protection equipment:

Flue gas purification equipment: such as desulfurization towers, hot air recovery pipelines, exhaust gas condensation devices, etc., which require corrosion resistance and thermal stability.

Fresh air and exhaust air systems: used in energy-saving buildings to treat high-temperature air or hot and humid return air to ensure that the pipeline is used for a long time without performance degradation.

Central air conditioning hot section: suitable for heating coils, hot water circulation systems, etc., to improve thermal energy utilization efficiency and equipment durability.

7.Aerospace and military industry: heat-resistant structural parts

TP405 is also used in high-tech fields and is suitable for extreme environments:

Engine compartment and exhaust duct: can withstand high-speed airflow impact, high heat flux radiation, and maintain structural strength.

Military equipment housing and fluid systems: The material has extremely high requirements for high temperature resistance, corrosion resistance, and fatigue resistance. TP405 has obvious advantages in strength and reliability.

High-end assembly structural parts: Titanium stabilization and low carbon characteristics improve long-term thermal strength, and provide greater safety in high-precision welded structures.