Tool Steel Specification

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AISI SAE A-2
Fine grain, electric furnace air hardening, 5% chrome tool steel.  It is a superior quality steel which has excellent wear and abrasion resistance properties.
Analysis C.95-1.25, Mn 1.00 Max, Cr 4.75-5.50, Mo .90-1.4, V.15-.50

AISI SAE W-1
W-1 water hardening is the most popular, versatile, and least expensive grade of tool steel. Its high carbon content allows it to be used often without heat treatment for maintenance applications. It is a fine grained electric furnace melted commercial grade tool steel which is supplied in the fully spheroidized 100% decarb free condition.
Analysis C .95-1.05, Mn .30-.40, Si .10-.25

AISI SAE S-7
S-7 Hi-shock tool steel is an excellent chock steel that can be and is often used in hot work applications where the tool temperature does not exceed 1000 deg. F.  This tool steel combines the qualities of high strength and good ductility for cold and medium hot work application.
Analysis C .45-.55, Mn .20-.80, Si .20-1.00, Cr 3.0-3.5, V .20-.30, Mo 1.30-1.80

AISI SAE D-2
Fine quality, air hardened, electric furnace melt tool steel. The combination of superior abrasion resistance and toughness found in D-2 results from its high carbon and high chromium composition. High chrome is an extraordinary tool steel that can be specified for the most demanding applications. This is  non-free machining tool steel.
Analysis C 1.40-1.60, Mn .60 Max, Cr 11.00-13.00, V 1.10 Max, Mo .70-1.20, Co 100 Max

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