General Properties
Alloys 316 (UNS S31600), 316L (S31603), and 317L (S31703) are molybdenum-bearing austenitic stainless steels which are more resistant to general corrosion and pitting/crevice corrosion than the conventional chromium-nickel austenitic stainless steels such as Alloy 304. These alloys also offer higher creep, stress-to-rupture, and tensile strength at elevated temperature. Alloy 317L containing 3 to 4% molybdenum is preferred to Alloys 316 or 316L which contain 2 to 3% molybdenum in applications requiring enhanced pitting and general corrosion resistance.
In addition to excellent corrosion resistance and strength properties, the Alloys 316, 316L, and 317L Cr-Ni-Mo alloys also provide the excellent fabricability and formability which are typical of the austenitic stainless steels.
Product form: sheet, pipe, bar, coil. Size can be offered according to customers' requirement.
Composition:
Chemical composition as represented by ASTM A240 and ASME SA-240 specifications are indicated in the table below.
|
Percentage by Weight (maximum unless range is specified) |
Element |
Alloy 316 |
Alloy 316L |
Alloy 317L |
Carbon |
0.08 |
0.030 |
0.030 |
Manganese |
2.00 |
2.00 |
2.00 |
Silicon |
0.75 |
0.75 |
0.75 |
Chromium |
16.00 18.00 |
16.00 18.00 |
18.00 20.00 |
Nickel |
10.00 14.00 |
10.00 14.00 |
11.00 15.00 |
Molybdenum |
2.00 3.00 |
2.00 3.00 |
3.00 4.00 |
Phosphorus |
0.045 |
0.045 |
0.045 |
Sulfur |
0.030 |
0.030 |
0.030 |
Nitrogen |
0.10 |
0.10 |
0.10 |
Iron |
Balance |
Balance |
Balance |