High strength stainless steel

Details High strength stainless steel High strength stainless steel

1988-06-17

1990-02-20

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 35, 420 54, C22C 3842

Patent

active

049024728

ABSTRACT:
A high strength stainless steel having a tensile strength of not less than 230 kgf/mm.sup.2 is disclosed, which comprises 0.01-0.015 st % of C and/or N, 1.0-4.0 wt % of Cu, 9.5-10.9 wt % of Ni, 12.0-17.0 wt % of Cr, 0.5-2.5 wt % of Al and/or Ti, 0.003-0.011 wt % of B, 0.02-0.2 wt % of Be and the balance of Fe, and has a temperature (Md.sub.30) of transforming 50% of austenite into martensite under a true strain of 0.3 within a range of from room temperature to -196.degree. C.

REFERENCES:
patent: 2850380 (1957-03-01), Clarke, Jr.
patent: 3795507 (1974-03-01), Allen

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