1.7131
16MnCr5
high-grade structural steel; alloyed; case hardening steel; plastic mould steel
Energy & environmental technology, Vehicle construction & e-mobility
Thanks to its good hardenability and machinability, the material 1.7131 can achieve high surface hardness and wear resistance. Therefore, the material is primarily used for gear parts and in mechanical engineering.
Composition
C
Si
Mn
P
S
Cr
Mo
min.
0,14
-
1,0
-
-
0,8
0,15
max.
0,19
0,4
1,3
0,025
0,035
1,1
0,30
C
min.
0,14
max.
0,19
Si
max.
0,4
Mn
min.
1,0
max.
1,3
P
max.
0,025
S
max.
0,035
Cr
min.
0,8
max.
1,1
Mo
min.
0,15
max.
0,30
Standards and designations
Material group
High-quality engineering steel
AFNOR
16MC4
AISI/SAE
5115; 5117
UNS
G51150; G51170
Fields of application
Mechanical engineering
Automotive industry
Attributes
Physical properties at 20° C
Density
7,76 kg/dm³
Specific heat
431 J/kg K
Thermal conductivity
44 W/m K
Electrical resistance
0,12 Ω mm²/m
Thermal treatment
Soft annealing
650 - 700 °C
Case hardening
880 - 980 °C
Direct hardening
880 - 980 °C
Core hardening
860 - 900 °C
Edge hardening
780 - 820 °C
Tempering
150 - 200 °C
Cooling
Oil, air
Delivery forms
Angle/profile
Cut to size/custom made
Flat
Hexagon
Powder
Round
Round tube/bushing
Sheets/sheet blanks/plates
Slit strip
Square
