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EN 2.4669 (NiCr15Fe7TiAl) Nickel Alloy

EN 2.4669 nickel is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the aged (precipitation hardened) condition. 2.4669 is the EN numeric designation for this material. NiCr15Fe7TiAl is the EN chemical designation.

It has a moderately low ductility and a moderately high tensile strength among wrought nickels.

The graph bars on the material properties cards below compare EN 2.4669 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

190 GPa 27 x 106 psi

Elongation at Break

16 %

Fatigue Strength

390 MPa 56 x 103 psi

Impact Strength: V-Notched Charpy

25 J 18 ft-lb

Poisson's Ratio

0.29

Reduction in Area

31 %

Shear Modulus

73 GPa 11 x 106 psi

Shear Strength

680 MPa 99 x 103 psi

Tensile Strength: Ultimate (UTS)

1110 MPa 160 x 103 psi

Tensile Strength: Yield (Proof)

720 MPa 100 x 103 psi

Thermal Properties

Latent Heat of Fusion

310 J/g

Maximum Temperature: Mechanical

960 °C 1760 °F

Melting Completion (Liquidus)

1380 °C 2510 °F

Melting Onset (Solidus)

1330 °C 2430 °F

Specific Heat Capacity

460 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

12 W/m-K 6.9 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

1.4 % IACS

Electrical Conductivity: Equal Weight (Specific)

1.5 % IACS

Otherwise Unclassified Properties

Base Metal Price

60 % relative

Density

8.4 g/cm3 520 lb/ft3

Embodied Carbon

10 kg CO2/kg material

Embodied Energy

150 MJ/kg 64 x 103 BTU/lb

Embodied Water

260 L/kg 31 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

160 MJ/m3

Resilience: Unit (Modulus of Resilience)

1380 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

23 points

Strength to Weight: Axial

37 points

Strength to Weight: Bending

28 points

Thermal Diffusivity

3.1 mm2/s

Thermal Shock Resistance

33 points

Alloy Composition

Nickel (Ni)Ni 65.9 to 77.7
Chromium (Cr)Cr 14 to 17
Iron (Fe)Fe 5.0 to 9.0
Titanium (Ti)Ti 2.3 to 2.8
Niobium (Nb)Nb 0.7 to 1.2
Aluminum (Al)Al 0.4 to 1.0
Manganese (Mn)Mn 0 to 1.0
Cobalt (Co)Co 0 to 1.0
Silicon (Si)Si 0 to 0.5
Copper (Cu)Cu 0 to 0.5
Carbon (C)C 0 to 0.080
Phosphorus (P)P 0 to 0.020
Sulfur (S)S 0 to 0.015

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

EN 10269: Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

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

Nickel Alloys, Ulrich Heubner (editor), 1998