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EN 2.4856 (NiCr22Mo9Nb) Nickel Alloy

EN 2.4856 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 2.4856 is the EN numeric designation for this material. NiCr22Mo9Nb is the EN chemical designation.

It has a moderately high base cost among wrought nickels. In addition, it has a moderately high embodied energy and a moderately low ductility.

The graph bars on the material properties cards below compare EN 2.4856 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

Brinell Hardness

210

Elastic (Young's, Tensile) Modulus

200 GPa 30 x 106 psi

Elongation at Break

28 %

Fatigue Strength

280 MPa 41 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

79 GPa 11 x 106 psi

Shear Strength

570 MPa 83 x 103 psi

Tensile Strength: Ultimate (UTS)

880 MPa 130 x 103 psi

Tensile Strength: Yield (Proof)

430 MPa 62 x 103 psi

Thermal Properties

Latent Heat of Fusion

330 J/g

Maximum Temperature: Mechanical

1000 °C 1830 °F

Melting Completion (Liquidus)

1480 °C 2700 °F

Melting Onset (Solidus)

1430 °C 2600 °F

Specific Heat Capacity

440 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

10 W/m-K 5.8 BTU/h-ft-°F

Thermal Expansion

11 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

1.3 % IACS

Electrical Conductivity: Equal Weight (Specific)

1.4 % IACS

Otherwise Unclassified Properties

Base Metal Price

80 % relative

Density

8.6 g/cm3 540 lb/ft3

Embodied Carbon

14 kg CO2/kg material

Embodied Energy

190 MJ/kg 83 x 103 BTU/lb

Embodied Water

290 L/kg 35 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

200 MJ/m3

Resilience: Unit (Modulus of Resilience)

440 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

23 points

Strength to Weight: Axial

28 points

Strength to Weight: Bending

24 points

Thermal Diffusivity

2.7 mm2/s

Thermal Shock Resistance

29 points

Alloy Composition

Nickel (Ni) 58 to 68.8
Chromium (Cr) 20 to 23
Molybdenum (Mo) 8.0 to 10
Niobium (Nb) 3.2 to 4.2
Iron (Fe) 0 to 5.0
Cobalt (Co) 0 to 1.0
Manganese (Mn) 0 to 0.5
Silicon (Si) 0 to 0.5
Copper (Cu) 0 to 0.5
Aluminum (Al) 0 to 0.4
Titanium (Ti) 0 to 0.4
Carbon (C) 0.030 to 0.1
Phosphorus (P) 0 to 0.020
Sulfur (S) 0 to 0.015

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

Followup Questions

Similar Alloys

Further Reading

EN 10095: Heat resisting steels and nickel alloys

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

Nickel Alloys, Ulrich Heubner (editor), 1998