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EN 2.4680 (G-NiCr50Nb) Casting Alloy

EN 2.4680 cast nickel is a nickel alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. 2.4680 is the EN numeric designation for this material. G-NiCr50Nb is the EN chemical designation.

It has a moderately high heat capacity among the cast nickels in the database.

The graph bars on the material properties cards below compare EN 2.4680 cast nickel to: cast nickels (top), all nickel 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

210 GPa 31 x 106 psi

Elongation at Break

9.1 %

Fatigue Strength

120 MPa 18 x 103 psi

Poisson's Ratio

0.26

Shear Modulus

84 GPa 12 x 106 psi

Tensile Strength: Ultimate (UTS)

600 MPa 88 x 103 psi

Tensile Strength: Yield (Proof)

260 MPa 38 x 103 psi

Thermal Properties

Latent Heat of Fusion

350 J/g

Maximum Temperature: Mechanical

1050 °C 1920 °F

Melting Completion (Liquidus)

1360 °C 2490 °F

Melting Onset (Solidus)

1320 °C 2400 °F

Specific Heat Capacity

480 J/kg-K 0.12 BTU/lb-°F

Thermal Conductivity

14 W/m-K 8.2 BTU/h-ft-°F

Thermal Expansion

15 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

60 % relative

Density

8.0 g/cm3 500 lb/ft3

Embodied Carbon

9.1 kg CO2/kg material

Embodied Energy

130 MJ/kg 57 x 103 BTU/lb

Embodied Water

350 L/kg 42 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

45 MJ/m3

Resilience: Unit (Modulus of Resilience)

160 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

21 points

Strength to Weight: Bending

20 points

Thermal Diffusivity

3.7 mm2/s

Thermal Shock Resistance

14 points

Alloy Composition

Chromium (Cr) 48 to 52
Nickel (Ni) 42.9 to 51
Niobium (Nb) 1.0 to 1.8
Silicon (Si) 0 to 1.0
Iron (Fe) 0 to 1.0
Manganese (Mn) 0 to 0.5
Molybdenum (Mo) 0 to 0.5
Nitrogen (N) 0 to 0.16
Carbon (C) 0 to 0.1
Phosphorus (P) 0 to 0.020
Sulfur (S) 0 to 0.020

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

EN 10295: Heat Resistant Steel Castings

Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971

Nickel Alloys, Ulrich Heubner (editor), 1998