Tool steel
OwnerJerry L. Nelsoninventor
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Abstract
The invention provides a novel metallic composition and method of using the same. More particularly, the invention affords a tool steel and a method of heat treating the tool steel. In one of the preferred embodiments the tool steel includes about 0.50 to about 0.65 percent by weight carbon, about 0.095 to about 1.70 percent by weight manganese, up to about 0.030 percent by weight phosphorus, about 0.095 to about 0.200 percent by weight sulfur, about 1.10 to about 1.90 percent by weight chromium, about 0.10 to about 0.50 percent by weight nickel and about 0.20 to about 0.60 percent by weight copper. The tool steel of the present invention is preferably heat treated utilizing a heat treatment schedule that includes the steps of a preheat, austenization and a double temper.
Claims15
A metallic composition comprising iron (Fe), from about 0.40 to about 0.80 percent by weight carbon (C), from about 0.095 to about 1.70 percent by weight manganese (Mn), up to about 0.030 percent by weight phosphorus (P), from about 0.095 to about 0.200 percent by weight sulfur (S), from about 1.00 to about 2.00 percent by weight chromium (Cr), from about 0.30 to about 0.90 percent by weight silicon (Si), from about 0.10 to about 0.50 percent by weight nickel (Ni), up to about 0.010 percent by weight vanadium (V), up to about 0.20 percent by weight molybdenum (Mo), less than about 0.05 percent by weight cobalt (Co), less than about 0.03 percent by weight tungsten (W), less than about 0.001 percent by weight titanium (Ti) and from about 0.03 to about 0.30 percent by weight aluminum (Al), said composition having been subjected to a heat treating process which includes an austenization step and a tempering step.
Dependencies are inferred from the claim text.