1.8519 Datasheet
31CrMoV9
high-grade structural steel; alloyed; nitriding steel
Energy & environmental technology, Vehicle construction & e-mobility
The material 1.8519 is a CrMoV-alloyed nitriding steel which, due to its high wear resistance, is mainly used in automotive engineering and drive technology. The material 1.8519 (31CrMoV9) is directly comparable with the quenched and tempered steel 1.7709 (30CrMoV9).
Composition
C
Si
Mn
P
S
Cr
Mo
V
min.
0,27
-
0,40
-
-
2,30
0,15
0,10
max.
0,34
0,40
0,70
0,025
0,035
2,70
0,25
0,20
C
min.
0,27
max.
0,34
Si
max.
0,40
Mn
min.
0,40
max.
0,70
P
max.
0,025
S
max.
0,035
Cr
min.
2,30
max.
2,70
Mo
min.
0,15
max.
0,25
V
min.
0,10
max.
0,20
Standards and designations
Material group
Nitriding steel
AFNOR
31CrMoV9
B.S.
31CrMoV9
Fields of application
Automotive Industry
Drive Technology
Mechanical Engineering
Fittings construction
plant engineering
Engine and piston construction
Attributes
Physical properties at 20° C
Density
7,73 kg/dm³
Specific heat
441 J/kg K
Thermal conductivity
43 W/m K
Electrical resistance
0,19 (ohm) mm²/m
Modulus of elasticity
210 kN / mm²
Thermal treatment
Hot forming
850 - 1050 °C
Soft annealing
680 - 720 °C
Nitriding
500 - 520 °C
Nitrocarburizing
570 - 580 °C
Quenching and tempering
840 - 880 °C
Tempering
570 - 680 °C
Relaxing
550 - 580 °C
More properties
very high wear resistance
high compressive strength
heat-treatable
surface-hardenable
difficult to weld
Delivery forms
Sheets/sheet blanks/plates
Cut to size/custom made
Flat
Hexagon
Profile tube
Round
Round tube/bushing
Sheets/sheet blanks/plates
Square
