EN 1.7357 (G17CrMo5-5) Cast Steel
EN 1.7357 steel is an alloy steel formulated for casting. Cited properties are appropriate for the quenched and tempered condition. 1.7357 is the EN numeric designation for this material. G17CrMo5-5 is the EN chemical designation.
It has a moderately low embodied energy among cast alloy steels. In addition, it has a moderately low electrical conductivity and a moderately high ductility.
The graph bars on the material properties cards below compare EN 1.7357 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
180
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
23 %
Fatigue Strength
260 MPa 37 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)
590 MPa 86 x 103 psi
Tensile Strength: Yield (Proof)
360 MPa 52 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
430 °C 810 °F
Melting Completion (Liquidus)
1460 °C 2670 °F
Melting Onset (Solidus)
1420 °C 2590 °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
7.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.5 % IACS
Otherwise Unclassified Properties
Base Metal Price
2.9 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
1.6 kg CO2/kg material
Embodied Energy
21 MJ/kg 9.0 x 103 BTU/lb
Embodied Water
53 L/kg 6.3 gal/lb
Common Calculations
PREN (Pitting Resistance)
3.1
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m3
Resilience: Unit (Modulus of Resilience)
340 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Thermal Diffusivity
11 mm2/s
Thermal Shock Resistance
17 points
Alloy Composition
Among cast alloy steels, the composition of EN 1.7357 steel is notable for containing a comparatively high amount of chromium (Cr). Chromium is used to improve corrosion resistance and most mechanical properties (particularly at higher temperatures).
| Fe | 96 to 97.9 | |
| Cr | 1.0 to 1.5 | |
| Mn | 0.5 to 1.0 | |
| Mo | 0.45 to 0.65 | |
| Si | 0 to 0.6 | |
| C | 0.15 to 0.2 | |
| 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
ISO 4991: Steel castings for pressure purposes
EN 10293: Steel castings - Steel castings for general engineering uses
Creep-Resistant Steels, Fujio Abe et al. (editors), 2008
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