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A.I.S.I. TYPE S7
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Typical Analysis |
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C |
Mn |
Si |
Cr |
Mo |
.50 |
.70 |
.30 |
3.25 |
1.40 |
General Characteristics |
An air-hardening tool steel, S7 is a good general purpose and shock resisting tool steel well suited for many tools requiring exceptional toughness, good wear and resistance and added dimensional stability. Typical applications include blanking and forming dies. |
Typical Applications |
Punches, blanking dies, plastic molds, chisels, shears, forming dies, hobbled dies |
Heat Treatment (degrees in Fahrenheit) |
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Forging |
Annealing |
Preheating |
Hardening |
Tempering |
1800 to 2100 |
1500 to 1600 |
1725 to 1850 |
400 to 1150 |
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Effects of Tempering (Measured in Rockwell C) |
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| As hardened | 400 deg. F | 600 deg. F | 800 deg. F | 1000 deg. F |
| 60 to 62 | 58 to 59 | 55 to 56 | 54 to 55 | 53 to 54 |
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