1.4438 - AISI 317L pipe, wire, circle
Technical specifications
This grade is a low-carbon molybdenum austenitic stainless steel much more resistant to the action of chemical reagents compared to conventional stainless chromium-nickel austenitic steels. It combines high strength, good fatigue resistance with good heat resistance.
Percent composition, EN 10095−1999
| Fe | FROM | Si | Mn | P | S | Cr | Mo | Ni | Impurities |
|---|---|---|---|---|---|---|---|---|---|
| basis | ≤0.08 | ≤0.75 | ≤2.0 | ≤0.045 | ≤0.03 | 24−26 | ≤0.75 | 19−22 | ≤0.2 |
A low carbon content provides resistance to intergranular corrosion in those cases where heavy volumetric parts can not be annealed after welding to relieve stress.
Treatment
To facilitate instrumental processing, the sulfur content is recommended from 0.015% to 0.03%. Cutting edges with a special coating should be used. To facilitate grinding, a controlled sulfur content of 0.015% max is recommended.
Mechanical properties (temperature 20 ° C)
: sв — Short-term strength limit (ksi): 75
sT — Proportionality limit (yield strength for permanent deformation): 30 ksi.
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