Tool steel composition
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United States of America Patent
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Aug 28, 2001
Grant Date -
N/A
app pub date -
Feb 8, 2000
filing date -
Apr 2, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a tool steel composition comprising, expressed in weight percentage: C 0.3%-0.4% Cr 2.0%-4.0% Mo 0.8%-3.0% V 0.4%-1.0% W 1.5%-3.0% Co 1.0%-5.0% Si 0 %-1.0% Mn 0 %-1.0% Ni 0 %-1.0% the balance being mainly constituted by iron and inevitable impurities, and also to a method of preparing the composition.
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