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Mechanical Properties
|
UNS Designation |
S30215 |
S30800 |
S30900 |
S31000 |
|
Type |
302B |
308 |
309 |
310 |
|
Tensile Strength, min, ksi(MPa) |
75 (515) |
75 (515) |
75 (515) |
75 (515) |
|
Yield Strength, min, ksi(MPa) |
30(205) |
30(205) |
30(205) |
30(205) |
|
Elongation in 2 in. or 50 mm, min, % |
40 |
40 |
40 |
40 |
|
Hardness, max Brinell |
217 |
183 |
217 |
217 |
|
Hardness, max Rockwell B |
95 |
88 |
95 |
95 |
New designation established in accordance with Practice E 527 and SAE J 1086.
Yield strength shall be determined by the offset method at 0.2 % in accordance with Test Methods and Definitions A 370. Unless otherwise specified, an alternative method of determining yield strength may be based on a total extension under load of 0.5 %.
Either Brinell or Rockwell B hardness is permissible.
Chemical Composition
|
UNS Designation |
S30215 |
S30800 |
S30900 |
S31000 |
|
Type |
302B |
308 |
309 |
310 |
|
Carbon, max |
0.15 |
0.08 |
0.2 |
0.25 |
|
Manganese, max |
2 |
2 |
2 |
2 |
|
Phosphorus, max |
0.045 |
0.045 |
0.045 |
0.045 |
|
Sulfur, max |
0.03 |
0.03 |
0.03 |
0.03 |
|
Silicon, max |
2-3 |
0.75 |
0.75 |
1.5 |
|
Chromium |
17-19 |
19-21 |
22-24 |
24-26 |
|
Nickel |
8-10 |
10-12 |
12-15 |
19-22 |
|
Nitrogen, max |
0.1 |
… |
… |
… |
