Table 4. Classification, Approximate Compositions, and Properties Affecting Selection of Tool and Die Steels (From SAE Recommended Practice) Type of Tool Steel Chemical Composition a Non- warping Prop. Safety in Hardening Tough ness Depth of Hardening Wear Resistance C Mn Si Cr V W Mo Co Water Hardening 0.80 Carbon 70-0.85 b b b … … … … Poor Fair Good c Shallow Fair 0.90 Carbon 0.85-0.95 b b b … … … … Poor Fair Good c Shallow Fair 1.00 Carbon 0.95-1.10 b b b … … … … Poor Fair Good c Shallow Good 1.20 Carbon 1.10-1.30 b b b … … … … Poor Fair Good c Shallow Good 0.90 Carbon-V 0.85-0.95 b b b 0.15-0.35 … … … Poor Fair Good Shallow Fair 1.00 Carbon-V 0.95-1.10 b b b 0.15-0.35 … … … Poor Fair Good Shallow Good 1.00 Carbon-VV 0.90-1.10 b b b 0.35-0.50 … … … Poor Fair Good Shallow Good Oil Hardening Low-Manganese 0.90 1.20 0.25 0.50 0.20 d 0.50 … … Good Good Fair Deep Good High-Manganese 0.90 1.60 0.25 0.35 d 0.20 d … 0.30 d … Good Good Fair Deep Good High-Carbon, High-Chromium e 2.15 0.35 0.35 12.00 0.80 d 0.75 d 0.80 d … Good Good Poor Through Best Chromium 1.00 0.35 0.25 1.40 … … 0.40 … Fair Good Fair Deep Good Molybdenum Graphitic 1.45 0.75 1.00 … … … 0.25 … Fair Good Fair Deep Good Nickel-Chromium f 0.75 0.70 0.25 0.85 0.25 d … 0.50 d … Fair Good Fair Deep Fair Air Hardening High-Carbon, High-Chromium 1.50 0.40 0.40 12.00 0.80 d … 0.90 0.60 d Best Best Fair Through Best 5 Percent Chromium 1.00 0.60 0.25 5.25 0.40 d … 1.10 … Best Best Fair Through Good High-Carbon, High-Chromium-Cobalt 1.50 0.40 0.40 12.00 0.80 d … 0.90 3.10 Best Best Fair Through Best Shock-Resisting Chromium-Tungsten 0.50 0.25 0.35 1.40 0.20 2.25 0.40 d … Fair Good Good Deep Fair Silicon-Molybdenum 0.50 0.40 1.00 … 0.25 d … 0.50 … Poor g Poor h Best Deep Fair Silicon-Manganese 0.55 0.80 2.00 0.30 d 0.25 d … 0.40 d … Poor g Poor h Best Deep Fair Hot-Work Chromium-Molybdenum-Tungsten 0.35 0.30 1.00 5.00 0.25 d 1.25 1.50 … Good Good Good Through Fair Chromium-Molybdenum-V 0.35 0.30 1.00 5.00 0.40 … 1.50 … Good Good Good Through Fair Chromium-Molybdenum-VV 0.35 0.30 1.00 5.00 0.90 … 1.50 … Good Good Good Through Fair Tungsten 0.32 0.30 0.20 3.25 0.40 9.00 … … Good Good Good Through Fair
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