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EN 2.4650 (NiCo20Cr20MoTi) Nickel Alloy

EN 2.4650 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the aged (precipitation hardened) condition. 2.4650 is the EN numeric designation for this material. NiCo20Cr20MoTi is the EN chemical designation.

It has a moderately high base cost and a moderately high tensile strength among wrought nickels.

The graph bars on the material properties cards below compare EN 2.4650 nickel to: wrought 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 30 x 106 psi

Elongation at Break

34 %

Fatigue Strength

480 MPa 69 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

80 GPa 12 x 106 psi

Shear Strength

730 MPa 110 x 103 psi

Tensile Strength: Ultimate (UTS)

1090 MPa 160 x 103 psi

Tensile Strength: Yield (Proof)

650 MPa 94 x 103 psi

Thermal Properties

Latent Heat of Fusion

320 J/g

Maximum Temperature: Mechanical

1010 °C 1860 °F

Melting Completion (Liquidus)

1400 °C 2560 °F

Melting Onset (Solidus)

1350 °C 2470 °F

Specific Heat Capacity

450 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

12 W/m-K 6.9 BTU/h-ft-°F

Thermal Expansion

11 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

1.5 % IACS

Electrical Conductivity: Equal Weight (Specific)

1.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

80 % relative

Density

8.5 g/cm3 530 lb/ft3

Embodied Carbon

10 kg CO2/kg material

Embodied Energy

140 MJ/kg 61 x 103 BTU/lb

Embodied Water

360 L/kg 43 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

320 MJ/m3

Resilience: Unit (Modulus of Resilience)

1030 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

23 points

Strength to Weight: Axial

36 points

Strength to Weight: Bending

28 points

Thermal Diffusivity

3.1 mm2/s

Thermal Shock Resistance

33 points

Alloy Composition

Nickel (Ni)Ni 46.9 to 54.2
Chromium (Cr)Cr 19 to 21
Cobalt (Co)Co 19 to 21
Molybdenum (Mo)Mo 5.6 to 6.1
Titanium (Ti)Ti 1.9 to 2.4
Aluminum (Al)Al 0.3 to 0.6
Iron (Fe)Fe 0 to 0.7
Manganese (Mn)Mn 0 to 0.6
Silicon (Si)Si 0 to 0.4
Copper (Cu)Cu 0 to 0.2
Carbon (C)C 0.040 to 0.080
Phosphorus (P)P 0 to 0.020
Sulfur (S)S 0 to 0.0070
Boron (B)B 0 to 0.0050

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

Followup Questions

Similar Alloys

Further Reading

EN 10302: Creep resisting steels, nickel and cobalt alloys

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

Nickel Alloys, Ulrich Heubner (editor), 1998

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015