Typical Analysis
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)
Forging	Annealing	Preheating	Hardening	Tempering
1800 to 2100	1500 to 1600		1725 to 1850	400 to 1150

Effects of Tempering (Measured in Rockwell C)
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