an oil-hardening silicon-manganese steel of medium carbon content
especially adapted for punches, shear blades, chisels, and other shock
resisting applications. S-5 is therefore applicable where the
properties of silicon-manganese steels are desired in combination with
well-known advantages of oil-hardening steels. A reduced tendency to
distort or crack in heat treatment is accordingly combined with high
toughness in S-5..