EN 1.7710 (G15CrMoV6-9) Cast Steel
EN 1.7710 steel is an alloy steel formulated for casting. 1.7710 is the EN numeric designation for this material. G15CrMoV6-9 is the EN chemical designation.
It can have a very low ductility among cast alloy steels. In addition, it can have a very high tensile strength and has a fairly high embodied energy.
The properties of EN 1.7710 steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare EN 1.7710 steel to: cast alloy steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Brinell Hardness
280 to 320
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
6.8 to 11 %
Fatigue Strength
500 to 620 MPa 72 to 90 x 103 psi
Impact Strength: V-Notched Charpy
30 J 22 ft-lb
Poisson's Ratio
0.29
Shear Modulus
73 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
930 to 1070 MPa 130 to 150 x 103 psi
Tensile Strength: Yield (Proof)
800 to 1060 MPa 120 to 150 x 103 psi
Thermal Properties
Latent Heat of Fusion
260 J/g
Maximum Temperature: Mechanical
440 °C 830 °F
Melting Completion (Liquidus)
1470 °C 2670 °F
Melting Onset (Solidus)
1430 °C 2600 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
41 W/m-K 24 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.6 % IACS
Otherwise Unclassified Properties
Base Metal Price
3.5 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
2.2 kg CO2/kg material
Embodied Energy
30 MJ/kg 13 x 103 BTU/lb
Embodied Water
57 L/kg 6.8 gal/lb
Common Calculations
PREN (Pitting Resistance)
4.5
Resilience: Ultimate (Unit Rupture Work)
73 to 100 MJ/m3
Resilience: Unit (Modulus of Resilience)
1680 to 2970 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
33 to 38 points
Strength to Weight: Bending
27 to 30 points
Thermal Diffusivity
11 mm2/s
Thermal Shock Resistance
27 to 31 points
Alloy Composition
Among cast alloy steels, the composition of EN 1.7710 steel is notable for including vanadium (V). Vanadium has a strong hardening effect, but this effect is particularly sensitive to the type of tempering.
| Fe | 95.1 to 97 | |
| Cr | 1.3 to 1.8 | |
| Mo | 0.8 to 1.0 | |
| Mn | 0.6 to 1.0 | |
| Si | 0 to 0.6 | |
| V | 0.15 to 0.25 | |
| C | 0.12 to 0.18 | |
| S | 0 to 0.030 | |
| P | 0 to 0.025 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
EN 10293: Steel castings - Steel castings for general engineering uses
Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993
Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005
Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008
Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015