Fully martensitic steel alloy

Details Fully martensitic steel alloy Fully martensitic steel alloy

1998-03-20

2000-02-29

Yee, Deborah

Metal treatment

Stock

Ferrous

148333, 148663, 148654, 420 38, 420107, C22C 3830, C22C 3852, C21D 600

Patent

active

060304693

ABSTRACT:
A fully martensitic quenching and tempering steel (AP) essentially consists of (measured in % by weight): 8 to 15% of Cr, up to 15% of Co, up to 4% of Mn, up to 4% of Ni, up to 8% of Mo, up to 6% of W, 0.5 to 1.5% of V, up to 0.15% of Nb, up to 0.04% of Ti, up to 0.4% of Ta, up to 0.02% of Zr, up to 0.02% of Hf, at most 50 ppm of B, up to 0.1% of C and 0.12-0.25% of N, the content of Mn+Ni being less than 4% and the content of Mo+W being less than 8%, the remainder being iron and usual impurities resulting from smelting.

REFERENCES:
patent: 5310431 (1994-05-01), Buck
patent: 5415706 (1995-05-01), Scarlin et al.
Goecmen et al., "Precipitation Behaviour and Stability of Nitrides in High Nitrogen Martensitic 9% and 12% Chromium Steels", ISIJ International, vol. 36, No. 7 (1996), pp. 768-776.

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