Quenched and tempered steels

Mechanical properties and applications of alloy steels

42CrMo4 and 8740 Steel Features

Quenched and tempered steels are widely used in the automotive industry, for the production of driving shafts, gears, bearings, etc.

These steels have good mechanical properties, excellent hardenability and good machinability. Furthermore, they offer an excellent mechanical resistance up to 500°C.

Another advantage of these steels is to have a significantly lower cost, if compared to the stainless steel one

The table shows the mechanical properties of the tempering steels usually processed by Silcon Plastic srl

Steel Type	C [wt%]	σy [MPa]	UTS [MPa]	ɛf (%)
MIM 42CrMo4	0.35	> 400	> 700	> 3
MIM 8740	0.45	> 550	> 700	> 14