EN 1.7767 (12CrMoV12-10) Chromium-Molybdenum Steel
Other Steels
normalized and tempered
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength690MPa
Yield Strength500MPa
Brinell Hardness210HB
Maximum Service Temperature480°C
Chemical Composition
C
0.1 to 0.15%
CR
2.8 to 3.3%
NI
0 to 0.25%
MO
0.9 to 1.1%
MN
0.3 to 0.6%
SI
0 to 0.15%
N
0 to 0.012%
P
0 to 0.015%
S
0 to 0.0050%
CU
0 to 0.25%
NB
0 to 0.070%
TI
0 to 0.030%
V
0.2 to 0.3%
FE
93.8 to 95.8%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
20 %
Fatigue Strength
340 MPa
Impact Strength: V-Notched Charpy
46 J
Poisson's Ratio
0.29
Shear Modulus
74 GPa
Shear Strength
430 MPa
Tensile Strength: Ultimate (UTS)
690 MPa
Tensile Strength: Yield (Proof)
500 MPa
Hardness
Brinell Hardness
210
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
480 °C
Melting Completion (Liquidus)
1470 °C
Melting Onset (Solidus)
1430 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
40 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
20 points
Electrical
Electrical Conductivity: Equal Volume
7.7 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.9 % IACS
Calculated
PREN (Pitting Resistance)
6.4
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m 3
Resilience: Unit (Modulus of Resilience)
650 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
4.5 % relative
Embodied Carbon
2.4 kg CO 2 /kg material
Embodied Energy
33 MJ/kg
Embodied Energy
33 MJ/kg 14 x 10 3 BTU/lb
Embodied Water
64 L/kg
Embodied Water
64 L/kg 7.6 gal/lb
Registered Designations & Aliases
1.77671.776712CrMoV12-1012CrMoV12-10EN 1.7767 (12CrMoV12-10) Chromium-Molybdenum Steel
Standards
EN 10028-2 EN 10028-2: 2009 Flat products made of steels for pressure purposes. Non-alloy and alloy steels with specified elevated temperature properties
EN 10028-2 EN 10028-2: Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature properties
EN 10028-2 EN 10028-2: Flat products made of steels for pressure purposes - Part 2: Non-alloy and alloy steels with specified elevated temperature properties Welding Metallurgy, 2nd ed., Sindo Kou, 2003 Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011 Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005