Hardened martensitic steel having a low or zero content of cobalt, method for producing a component from this steel, and component obtained in this manner

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United States of America Patent

PATENT NO 9045806
APP PUB NO 20100200119A1
SERIAL NO

12668297

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Abstract

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Steel, characterized in that the composition thereof is, in percentages by weight:

    C=0.20-0.30%Co=trace levels-1%Cr=2-5%Al=1-2%Mo+W/2=1-4%V=trace levels-0.3%Nb=trace levels-0.1%B=trace levels-30 ppmNi=11-16% with Ni≧7+3.5 AlSi=trace levels-1.0%Mn=trace levels-2.0%Ca=trace levels-20 ppmrare earths=trace levels-100 ppmif N≦10 ppm, Ti+Zr/2=trace levels-100 ppm with Ti+Zr/2≦10 Nif 10 ppm

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Patent Owner(s)

Patent OwnerAddress
AUBERT & DUVAL75015 PARIS

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Montagnon, Jacques La Varenne St. Hilaire, FR 10 71

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