Type 409 is a heat resisting ferritic stainless steel providing good oxidation and corrosion resistance compared to carbon steel. This titanium stabilized grade was developed for automotive exhaust systems but its good formability, weldability, and corrosion resistance has led to its use in other applications.
Alloy 317L (UNS S31703) is a molybdenum-bearing austenitic stainless steel with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304. In addition, Alloy 317L offers higher creep, stress-to-rupture, and tensile strength at elevated temperatures than conventional stainless steels. It is a low carbon or “L” grade which provides resistance to sensitization during welding and other thermal processes.
The low carbon content of Alloy 317L enables it to be welded without intergranular corrosion resulting from chromium carbide precipitation enabling it to be used in the as-welded condition. With the addition of nitrogen as a strengthening agent, the alloy can be dual certified as Alloy 317 (UNS S31700)..
Chemical Properties Of 317 Stainless Steel Plate:
Carbon
0.08
Manganese
2
Silicon
0.75
Chromium
18.00 20.00
Nickel
11.00 15.00
Molybdenum
3.00 4.00
Phosphorus
0.045
Sulfur
0.03
Nitrogen
0.1
Iron
Bal.
Mechanical Properties Of 317 Stainless Steel Plate:
