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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

Iron (Fe) 96.6 to 99.02
Manganese (Mn) 0.8 to 1.4
Silicon (Si) 0 to 0.6
Carbon (C) 0.18 to 0.25
Nickel (Ni) 0 to 0.4
Chromium (Cr) 0 to 0.3
Copper (Cu) 0 to 0.3
Molybdenum (Mo) 0 to 0.12
Phosphorus (P) 0 to 0.030
Vanadium (V) 0 to 0.030
Sulfur (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