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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.

Iron (Fe) 95.1 to 97
Chromium (Cr) 1.3 to 1.8
Molybdenum (Mo) 0.8 to 1.0
Manganese (Mn) 0.6 to 1.0
Silicon (Si) 0 to 0.6
Vanadium (V) 0.15 to 0.25
Carbon (C) 0.12 to 0.18
Sulfur (S) 0 to 0.030
Phosphorus (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