EN 1.7367 (GX10CrMoV9-1) Cast Steel
EN 1.7367 steel is an alloy steel formulated for casting. Cited properties are appropriate for the normalized and tempered condition. 1.7367 is the EN numeric designation for this material. GX10CrMoV9-1 is the EN chemical designation.
It has a very low thermal conductivity among cast alloy steels. In addition, it has a very high embodied energy and a very high base cost.
The graph bars on the material properties cards below compare EN 1.7367 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
200
Elastic (Young's, Tensile) Modulus
190 GPa 28 x 106 psi
Elongation at Break
18 %
Fatigue Strength
310 MPa 45 x 103 psi
Impact Strength: V-Notched Charpy
31 J 23 ft-lb
Poisson's Ratio
0.28
Shear Modulus
75 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
670 MPa 98 x 103 psi
Tensile Strength: Yield (Proof)
460 MPa 67 x 103 psi
Thermal Properties
Latent Heat of Fusion
270 J/g
Maximum Temperature: Mechanical
600 °C 1100 °F
Melting Completion (Liquidus)
1460 °C 2660 °F
Melting Onset (Solidus)
1420 °C 2580 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
26 W/m-K 15 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
8.9 % IACS
Electrical Conductivity: Equal Weight (Specific)
10 % IACS
Otherwise Unclassified Properties
Base Metal Price
7.0 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
37 MJ/kg 16 x 103 BTU/lb
Embodied Water
88 L/kg 10 gal/lb
Common Calculations
PREN (Pitting Resistance)
13
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m3
Resilience: Unit (Modulus of Resilience)
560 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Thermal Diffusivity
6.9 mm2/s
Thermal Shock Resistance
19 points
Alloy Composition
Among cast alloy steels, the composition of EN 1.7367 steel is notable for including nitrogen (N) and niobium (Nb). Nitrogen has a substantial strengthening effect, but may contribute to strain aging unless the steel is deoxidized with aluminum. Niobium is primarily used to improve yield strength.
| Fe | 87.3 to 90.3 | |
| Cr | 8.0 to 9.5 | |
| Mo | 0.85 to 1.1 | |
| Mn | 0.3 to 0.6 | |
| Si | 0.2 to 0.5 | |
| V | 0.18 to 0.25 | |
| Ni | 0 to 0.4 | |
| C | 0.080 to 0.12 | |
| Nb | 0.060 to 0.1 | |
| N | 0.030 to 0.070 | |
| P | 0 to 0.030 | |
| Al | 0 to 0.020 | |
| S | 0 to 0.010 | |
| Ti | 0 to 0.010 | |
| Zr | 0 to 0.010 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ISO 4991: Steel castings for pressure purposes
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