Metals and Materials Table of Contents

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

H13 An excellent hot work steel with an outstanding combination of shock resistance, red hardness, and abrasion resisting properties. Especially suitable as a die steel for aluminum and magnesium die casting.

420ESR High chromium stainless steel grade - an air or oil hardening mold steel having superior internal cleanliness combined with good corrosion resistance. Supplied in the Annealed Condition P20 is a prehardened, general purpose mold steel suitable for production of machined or EDM'd plastic mold and zinc die casting die components. Marshalloy MQ Mold quality steel supplied in the prehardened condition. A uniform product with exceptional cleanliness able to be polished to an extremely high finish required for plastic molding. The balanced alloy composition ensures a uniform cross-sectional hardness similar to P20

4140HT Direct hardening alloy steel that can be quenched and tempered to obtain a wide range of hardness, ductility and strength levels. DECARB FREE Mill finished, free from “mill scale,? and ready to use

Maximum Brinell Hardness in Annealed or Cold Drawn Condition

Source

AISI - American Iron and Steel Institute

Related

• Structural and Plate Steel Terms Definitions
• Normalizing Annealing Tool Steels Table Chart
• Heat Treating Tool Steels Manufacturing Table Chart
• Types of Broaching Tools Optimization Cutting Equations
• Speeds and Feeds Calculator
• Heat Treating Common Steels Temperature and Quenching Medium Chart