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ASTM 317L - EN 1.4438

ASTM 317L - EN 1.4438

Alloy 317L is an ultra-low carbon adaptation of the 317 chromium-nickel austenitic variety. It integrates molybdenum, which enhances overall corrosion protection and increases resistance to pitting in chloride-containing solutions. It is not magnetic in the annealed state and can't be hardened through heat treatment, yet it will harden with cold working.

Equivalent grades

• ASTM 317L
• DIN 1.4438
• UNS S31703
• X2CrNiMo18-15-4

Chemical Composition Reference


Physical Property Reference

• Density: 8.0 kg/m³

• Tensile Strength: 610 MPa

• Yield Strength: 220 MPa

• Modulus of Elasticity: 200 GPa

• Thermal 100°C: 16 10-6/°C

• Thermal Conductivity: 14 W/m°C

• Thermal Capacity: 500 J/kg°C

Stock & Dimensions

Our warehouse has a large number of stock to provide you with a variety of products in different sizes, and can also customize the size according to your needs.
• Bar: 0.5~600mm Diameter
• Coil: 0.5~150mm Thick
• Plate: 0.5~200mm Thick
• Pipe: 6~630mm External Diameter; 0.5~40mm Wall Tick
• Available in specific sizes

Product Forms

We provide you with a variety of product forms, including but not limited to:
• Bar/Rod
• Pipe/Tube
• Coil/Strip
• Plate/Sheet/Circle
• Wire
• Fitting (Flange, Elbow, Tee...)
• Customize

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ASTM 317L - EN 1.4438

Essential details
1.4438 is an ultra-low carbon steel. It has good overall and local corrosion resistance. It has good formability and weldability. The alloy has high resistance to chemical attack of acid.

Typical Applications:

- Chemical tankers

- Pulp and Paper equipment

- Condenser tubes and heat exchanger tubes

- Equipment for the petrochemical industry

- Flue-gas desulfurization equipment

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