EN 1.7707 (30CrMoV9) Chromium Steel
Other Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength900MPa
Yield Strength700MPa
Brinell Hardness300HB
Maximum Service Temperature460°C
Chemical Composition
C
0.26 to 0.34%
CR
2.3 to 2.7%
NI
0 to 0.6%
MO
0.15 to 0.25%
MN
0.4 to 0.7%
SI
0 to 0.4%
P
0 to 0.035%
S
0 to 0.035%
V
0.1 to 0.2%
FE
94.7 to 96.8%
Mechanical
A - Min. elongation at fracture (%) longitud., (+QT)
12
+QT
A - Min. elongation at fracture (%) longitud., (+QT)
14
+QT
A - Min. elongation at fracture (%) transverse, (+QT)
8-10
+QT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
11 %
Fatigue Strength
500 MPa
Impact Strength: V-Notched Charpy
31 J
Poisson's Ratio
0.29
Re - Upper yield strength (MPa) (+QT)
700
+QT
Re - Upper yield strength (MPa) (+QT)
590
+QT
Rm - Tensile strength (MPa) (+QT)
900
+QT
Rm - Tensile strength (MPa) (+QT)
800
+QT
Shear Modulus
73 GPa
Shear Strength
600 MPa
Tensile Strength: Ultimate (UTS)
1010 MPa
Tensile Strength: Yield (Proof)
800 MPa
Hardness
Brinell Hardness
300
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
460 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
39 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
29 points
Electrical
Electrical Conductivity: Equal Volume
7.6 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.7 % IACS
Other
Nominal thickness (mm):
to 160
Nominal thickness (mm):
160 - 330
Calculated
PREN (Pitting Resistance)
3.2
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m 3
Resilience: Unit (Modulus of Resilience)
1690 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
36 points
Strength to Weight: Bending
29 points
Environmental
Base Metal Price
3.3 % relative
Embodied Carbon
1.9 kg CO 2 /kg material
Embodied Energy
27 MJ/kg
Embodied Energy
27 MJ/kg 11 x 10 3 BTU/lb
Embodied Water
58 L/kg
Embodied Water
58 L/kg 7.0 gal/lb
Registered Designations & Aliases
1.77071.770730CrMoV930CrMoV9EN 1.7707 (30CrMoV9) Chromium Steel
Standards
EN 10250-3 EN 10250-3: 2000 Open steel die forgings for general engineering purposes. Alloy special steels
EN 10250-3 EN 10250-3: Open die steel forgings for general engineering purposes - Part 3: Alloy special steels