Case-hardening Steels (IS : 4432-1967)
 
Designation of Steel Case hardened Temperatures oC Typical Applications
Tensile strength Min kgf/mm2 Elongation % Min Carburizin Softening Case Hardening Annealing
C 10, C 14,
19 S 11		 50 17 900-920 650-680 760-780 - For components which require high wear resistant surfaces with tough cores to resist shock loads and strength for longer service.
14 Mn IS 14,
11 Mn 2		 60 17 900-930 650-680 760-780 800-920
15 Cr 65 60 13 900-930 650-680 770-800 870-900
17 Mn 1 Cr 95 80 10 900-930 650-680 810-840 870-880
20 Mn Cr 1 100 8 900-930 650-680 810-840 850-880
16 Ni 80 Cr 60 70 15 880-920 650-680 780-820 850-880
16 Ni 1 Cr 80 85 12 900-930 650-660 780-820 850-880
13 Ni 3 Cr 80 85 12 900-930 620-650 760-780 860-880
15 Ni 4 Cr 1 135 9 900-930 600-630 760-780 860-880
20 Ni 2 Mo 25 85 12 880-920 650-660 760-780 -
20 Ni 55 Cr 50
Mo 20		 90 11 880-920 650-660 780-820 -
15 Ni Cr 1 Mo 12 100 9 900-930 630-650 780-820 860-880
15 Ni 2 Cr 1 Mo 15 110 9 900-930 630-650 780-820 860-880
16 Ni Cr 1 Mo 20 135 9 900-930 630-650 800-820 850-880