GBT K409
Chemical composition(mass fraction)(wt.%)
C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Mo(%) | Co(%) | B(%) | Al(%) | Ti(%) | Ta(%) | Other(%) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.08-0.13 | Max 0.5 | Max 0.5 | Max 0.015 | Max 0.01 | 7.50-8.50 | Balance | 5.75-6.25 | 9.50-10.5 | 0.10-0.20 | 5.75-6.25 | 0.80-1.20 | 4.00-4.50 | Zr: 0.05-0.10 |