Nickel Alloy 242 (N10242)
Nickel 242 is a nickel alloy formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. N10242 is the UNS number for this material. Nickel Alloy 242 is the common industry name.
This material is well established: the Further Reading section below cites a number of published standards, and that list is not necessarily exhaustive.
It has a moderately low heat capacity among wrought nickels. In addition, it has a moderately low melting temperature and a moderately high embodied energy.
The graph bars on the material properties cards below compare nickel 242 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
220 GPa 32 x 106 psi
Elongation at Break
45 %
Fatigue Strength
300 MPa 44 x 103 psi
Poisson's Ratio
0.3
Shear Modulus
84 GPa 12 x 106 psi
Shear Strength
570 MPa 83 x 103 psi
Tensile Strength: Ultimate (UTS)
820 MPa 120 x 103 psi
Tensile Strength: Yield (Proof)
350 MPa 51 x 103 psi
Thermal Properties
Latent Heat of Fusion
330 J/g
Maximum Temperature: Mechanical
930 °C 1710 °F
Melting Completion (Liquidus)
1380 °C 2510 °F
Melting Onset (Solidus)
1290 °C 2350 °F
Specific Heat Capacity
400 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
11 W/m-K 6.5 BTU/h-ft-°F
Thermal Expansion
11 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
1.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
1.4 % IACS
Otherwise Unclassified Properties
Base Metal Price
75 % relative
Density
9.0 g/cm3 560 lb/ft3
Embodied Carbon
14 kg CO2/kg material
Embodied Energy
180 MJ/kg 80 x 103 BTU/lb
Embodied Water
290 L/kg 34 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
300 MJ/m3
Resilience: Unit (Modulus of Resilience)
280 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
22 points
Strength to Weight: Axial
25 points
Strength to Weight: Bending
21 points
Thermal Diffusivity
3.1 mm2/s
Thermal Shock Resistance
25 points
Alloy Composition
| Ni | 59.3 to 69 | |
| Mo | 24 to 26 | |
| Cr | 7.0 to 9.0 | |
| Fe | 0 to 2.0 | |
| Co | 0 to 1.0 | |
| Mn | 0 to 0.8 | |
| Si | 0 to 0.8 | |
| Al | 0 to 0.5 | |
| Cu | 0 to 0.5 | |
| C | 0 to 0.030 | |
| P | 0 to 0.030 | |
| S | 0 to 0.015 | |
| B | 0 to 0.0060 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B434: Standard Specification for Nickel-Molybdenum-Chromium-Iron Alloys (UNS N10003, UNS N10242) Plate, Sheet, and Strip
ASTM B573: Standard Specification for Nickel-Molybdenum-Chromium-Iron Alloys (UNS N10003, N10242) Rod
ASTM B619: Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Pipe
ASTM B626: Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Tube
ASTM B622: Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube
ASTM B564: Standard Specification for Nickel Alloy Forgings
Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016
Engineering Properties of Nickel and Nickel Alloys, John L. Everhart, 1971
Nickel Alloys, Ulrich Heubner (editor), 1998