EN 1.7711 (40CrMoV4-6) Chromium-Molybdenum Steel
Other Steels
annealed
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength690MPa
Yield Strength400MPa
Brinell Hardness210HB
Maximum Service Temperature430°C
Chemical Composition
C
0.36 to 0.44%
CR
0.9 to 1.2%
MO
0.5 to 0.65%
MN
0.45 to 0.85%
SI
0 to 0.4%
P
0 to 0.025%
S
0 to 0.030%
V
0.25 to 0.35%
AL
0 to 0.015%
FE
96 to 97.5%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
22 %
Fatigue Strength
290 MPa
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Shear Strength
440 MPa
Tensile Strength: Ultimate (UTS)
690 MPa
Tensile Strength: Yield (Proof)
400 MPa
Hardness
Brinell Hardness
210
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
430 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
33 W/m-K
Thermal Diffusivity
8.9 mm 2 /s
Thermal Expansion
11 µm/m-K
Thermal Shock Resistance
24 points
Electrical
Electrical Conductivity: Equal Volume
7.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.5 % IACS
Calculated
PREN (Pitting Resistance)
2.9
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m 3
Resilience: Unit (Modulus of Resilience)
430 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Environmental
Base Metal Price
3.0 % relative
Embodied Carbon
2.3 kg CO 2 /kg material
Embodied Energy
32 MJ/kg
Embodied Energy
32 MJ/kg 14 x 10 3 BTU/lb
Embodied Water
54 L/kg
Embodied Water
54 L/kg 6.4 gal/lb
Registered Designations & Aliases
1.77111.771140CrMoV4-640CrMoV4-6EN 1.7711 (40CrMoV4-6) Chromium-Molybdenum Steel
Standards
EN 10269 EN 10269: 1999 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
EN 10269 EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
EN 10269 EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties Creep-Resistant Steels, Fujio Abe et al. (editors), 2008