Chemical properties shall conform to the requirements prescribed in Table 2 and Table 3 for alloy elements. Tensile strength and yiled strength shall comply
Table 3: Alloy elements composition
|
Type A |
Elements |
Heat Analysis, % |
|---|---|---|
|
1 |
Columbium |
0.005-0.05B |
|
2 |
Vanadium |
0.01-0.15C |
|
3 |
Columbium |
0.005-0.05B |
|
|
Vandadium |
0.01-0.15C |
|
Columbium plus vanadium |
0.02-0.15D |
|
|
5 |
Titanium |
0.006-0.04 |
|
Nitrogen |
0.003-0.015 |
|
|
Vanadium |
0.06 max |
A: Alloy content shall comply with Type 1, 2, 3, or 5 and shall be on test report.
B: Product analysis limits = 0.004 to 0.06%.
C: Product analysis limits = 0.005 to 0.17%.
D: Product analysis limits = 0.01 to 0.16%.
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