EN 1.0625 (GP280GH) Cast Non-Alloy Steel
EN 1.0625 steel is a carbon steel formulated for casting. 1.0625 is the EN numeric designation for this material. GP280GH is the EN chemical designation. It has the highest base cost among the cast carbon steels in the database.
The properties of EN 1.0625 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 1.0625 steel to: cast carbon 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
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
25 %
Fatigue Strength
230 MPa 34 x 103 psi
Impact Strength: V-Notched Charpy
30 to 45 J 22 to 33 ft-lb
Poisson's Ratio
0.29
Shear Modulus
73 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
560 MPa 81 x 103 psi
Tensile Strength: Yield (Proof)
320 MPa 46 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
400 °C 750 °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
47 W/m-K 27 BTU/h-ft-°F
Thermal Expansion
12 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Otherwise Unclassified Properties
Base Metal Price
2.2 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
1.5 kg CO2/kg material
Embodied Energy
20 MJ/kg 8.5 x 103 BTU/lb
Embodied Water
48 L/kg 5.8 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m3
Resilience: Unit (Modulus of Resilience)
270 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
20 points
Strength to Weight: Bending
19 points
Thermal Diffusivity
13 mm2/s
Thermal Shock Resistance
18 points
Alloy Composition
| Fe | 96.6 to 99.02 | |
| Mn | 0.8 to 1.4 | |
| Si | 0 to 0.6 | |
| C | 0.18 to 0.25 | |
| Ni | 0 to 0.4 | |
| Cr | 0 to 0.3 | |
| Cu | 0 to 0.3 | |
| Mo | 0 to 0.12 | |
| P | 0 to 0.030 | |
| V | 0 to 0.030 | |
| S | 0 to 0.020 |
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
Carbon Steel Handbook, D. Gandy, 2007
Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008
Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015