FIELD: metallurgy, in particular composition of dispersion-hardening martensite stainless steel for air-spaceships.
SUBSTANCE: claimed steel contains (mass %) carbon ≤0.030; manganese ≤0.050; silicium ≤1/00; phosphorus ≤ 0.030; sulfur 0.007-0.015; chromium 14.00-15.50; nickel 3.50-5.50; molybdenum ≤1.00; copper 2.50-4.50; niobium + tantalum = (carbon content)x5-0.25; aluminum ≤0.05; boron ≤0.010; nitrogen ≤0.030; and balance: iron and inevitable impurities.
EFFECT: steel excellent in workability.
21 cl, 14 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
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