High-hardness precipitation hardening steel for metallic mold

Details High-hardness precipitation hardening steel for metallic mold High-hardness precipitation hardening steel for metallic mold

1995-10-10

1997-06-17

Yee, Deborah

Alloys or metallic compositions

Ferrous

Over 0.05 percent sulfur, over 0.04 percent phosphorus or...

420108, C22C 3842, C22C 3806

Patent

active

056394217

ABSTRACT:
A precipitation hardening steel excellent in machinability, toughness (10J/cm.sup.2 or above), hardness (HRC43 or above) after aging treatment and suitable to a metallic mold for plastics, which consists by weight percentage of C: 0.05-0.18%, Si:0.15-1.00%, Mn:1.0-2.0%, Ni:2.5-3.5%, Cr:0.7-2.0%, Al:0.5-1.5%, Cu:0.7-1.7%, Mo:0.1-0.4%, S:0.05-0.35%, and the balannce of Fe, and H-value obtained through the following equation indicates zero or a positive value:

REFERENCES:
patent: 5013524 (1991-05-01), Leban
patent: 5023049 (1991-06-01), Norstrom et al.
patent: 5447800 (1995-09-01), Dorsch et al.

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