Alloys or metallic compositions – Ferrous – Over 0.05 percent sulfur – over 0.04 percent phosphorus or...
Patent
1991-07-15
1993-01-26
Yee, Deborah
Alloys or metallic compositions
Ferrous
Over 0.05 percent sulfur, over 0.04 percent phosphorus or...
420 91, 420112, 148637, 148579, C22C 3842, C21D 900
Patent
active
051820790
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 0.090 to about 1.45 percent by weight manganese, up to about 0.030 percent by weight phosphorus, about 0.035 to about 0.070 percent by weight sulfur, about 1.10 to about 1.90 percent by weight chromium, about 0.15 to about 0.40 percent by weight nickel and about 0.20 to about 0.40 percent by weight copper. In one of the preferred embodiments of the present invention the tool steel is heat treated utilizing a heat treatment schedule that includes the steps of a preheat, austenization and a double temper.
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Nelson & Associates Research, Inc.
Yee Deborah
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