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Corrosion Resistant ASTM A268 TP405 Seamless Tubes For Oil Gas Applications

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Corrosion Resistant ASTM A268 TP405 Seamless Tubes For Oil Gas Applications

Brand Name : YUHONG

Model Number : ASTM A268 TP405

Certification : ABS, GL, DNV, NK, PED, AD2000, ISO 9001

Place of Origin : China

MOQ : 300 KGS

Price : Negotiable

Payment Terms : T/T,L/C

Supply Ability : 1000 tons per month

Delivery Time : Depends on quantity

Packaging Details : Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case

Specification : ASTM A268

Grade : TP405 (UNS S40500)

Type : SEAMLESS/WELDED

Non Destructive Test : ET, HT, UT

Length Options : Random Length / Cut-to-Size (6m, 20ft, etc.)

Surface Finish : Pickled & Passivated / Bright Annealed (BA)

Industry Applications : Heat Exchangers, Boilers, Petrochemical Plants

Compatible Media : Steam, Weak Acids, Oil & Gas

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1. Product Introduction of ASTM A268 TP405



ASTM A268 TP405 (UNS S40500) is a martensitic stainless steel seamless tube designed for medium corrosion resistance and high strength requirements. Through the optimized ratio of low carbon content and chromium elements, TP405 has excellent resistance to stress corrosion cracking while maintaining good formability, and is suitable for high temperature and mild corrosion conditions.



2. Chemical composition of ASTM A268 TP405



Element Content Range Function
C ≤0.08 Control hardness and weldability
Cr 11.5-14.5 Core element for oxidation and corrosion resistance
Mn ≤1.00 Deoxidation and hardenability improvement
Si ≤0.50 Deoxidizer, high temperature strength enhancement
P ≤0.040 Control impurities (reduce brittleness)
S ≤0.030 Improve cutting performance



3. Mechanical properties of ASTM A268 TP405



Tensile strength (Rm): ≥515 MPa


Yield strength (Rp0.2): ≥275 MPa


Elongation (50mm gauge): ≥25%


Hardness (Brinell): ≤241 HB


Note: The strength can be further increased to ≥860 MPa through heat treatment (quenching + tempering) (customization requires clear process)


4. Physical properties of ASTM A268 TP405


Property Value
Density (20°C) 7.78 g/cm³
Melting range 1427-1510°C
Coefficient of thermal expansion (20-100°C) 10.4 μm/m·°C
Thermal conductivity (100°C) 24.9 W/m·K
Resistivity (20°C) 0.60 μΩ·m



5. Key advantages of ASTM A268 TP405


  • Corrosion resistance optimization: Conventional 410 steel has better pitting resistance in chloride-containing environments, making it suitable for marine atmospheric environments.


  • Processing adaptability: It can be cold-formed (bending and flaring) in the annealed state, and has high strength and toughness after heat treatment.


  • Economical efficiency: Compared with austenitic stainless steel (such as 304), the cost is reduced by 15-20%, and the cost performance is outstanding.


  • Welding compatibility: ER410NiMo welding material is recommended, and preheating to 150-200°C can avoid cold cracks.



6. Typical application areas of ASTM A268 TP405


  • Energy industry: geothermal well casing, oil well water injection system pipeline (resistant to CO₂/H₂S corrosion).


  • Chemical equipment: weak acid medium transmission pipe (such as dilute sulfuric acid, organic acid), heat exchanger tube bundle.


  • Food processing: high temperature sterilization equipment support structure (compliant with FDA contact standards).


  • Ship engineering: seawater desalination pretreatment pipeline, pump valve assembly.


Corrosion Resistant ASTM A268 TP405 Seamless Tubes For Oil Gas Applications




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