Alro Steel was established in 1948 by Al and Robert Glick and has grown to include Alro Plastics, Alro Industrial Supply and Alro Metals Outlet.

S-7 Flat Ground Stock

S-7 Flat Ground Stock
Chemical Composition

Carbon (C)               .45/.55
Manganese (Mn)       .20/.80
Silicon (Si)                .20/1.00
Tungsten (W)
Molybdenum (Mo)  1.30/1.80
Chromium (Cr)       3.00/3.50
Vanadium (V)          .30 max
Cobalt (Co)

S-7 Flat Ground Stock

Alro stocks AISI S7 - a general purpose air-hardening tool steel with high impact and shock resistance. It has good resistance to softening at moderately high temperatures. This combination of properties makes it suitable for many hot work and cold work applications. Excellent combination of high strength and toughness. Useful in moderate hot work as well as cold work work tooling. Added size stability when air hardened.


S-7 is typically bought to meet chemistry requirements rather than physical requirements. For that reason, physical properties are generally not provided unless requested prior to production. Any material can be sent to a third party after production to be tested for physical properties.


Typical Uses
Typical applications include Bull Riveters, Concrete Breakers (Moll Points), Riveting Dies, Powder Metal Dies, Notching Dies, Dowels, Drills, Drill Plates, Hubs, Plastic Mold Dies, Cold Forming Dies, Blanking Dies, Bending Dies, and Master Hobs.
GradeBuy FLAT
S-7 FG Stk