Heat-treatable steels are in the mechanical construction steel range. They are characterized by carbon content usually in excess of 0.25%, and may or may not be alloys.
Heat-treatable steels are used to fabricate parts that require a combination of strength and tenacity, with relatively uniform values throughout the cross section or down to a certain depth. These properties are attained by means of quenching and tempering, which comprise the heat-treatment process.
Good hardenability, frequently used for medium sized parts when water-quenched, and small ones when oil-quenched.
Steer arms, shafts, bolts, and rivets
COPANT 4130; SAE 4130; AISI 4130; UNS G41300; DIN 25CrMo4 (1.7218); AFNOR 25 CD 4 (S); SCCrM 1;
Chemical Composition (% BY WEIGHT)
0,28 – 0,33
0,40 – 0,60
0,15 – 0,35
0,80 – 1,10
0,15 – 0,25
THERMAL TREATMENT AND PROCESSING TEMPERATURES (°C)