Grade CW12MW (J30002) Cast Nickel
Grade CW12MW nickel is a nickel alloy formulated for casting. Cited properties are appropriate for the heat treated (HT) condition. CW12MW is the ASTM designation for this material. J30002 is the UNS number.
It has a moderately high melting temperature and a moderately low heat capacity among cast nickels.
The graph bars on the material properties cards below compare grade CW12MW 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
220 GPa 32 x 106 psi
Elongation at Break
4.6 %
Fatigue Strength
130 MPa 18 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
85 GPa 12 x 106 psi
Tensile Strength: Ultimate (UTS)
560 MPa 82 x 103 psi
Tensile Strength: Yield (Proof)
310 MPa 45 x 103 psi
Thermal Properties
Latent Heat of Fusion
320 J/g
Maximum Temperature: Mechanical
960 °C 1770 °F
Melting Completion (Liquidus)
1610 °C 2930 °F
Melting Onset (Solidus)
1560 °C 2830 °F
Specific Heat Capacity
410 J/kg-K 0.1 BTU/lb-°F
Thermal Expansion
12 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
70 % relative
Density
9.1 g/cm3 570 lb/ft3
Embodied Carbon
13 kg CO2/kg material
Embodied Energy
180 MJ/kg 77 x 103 BTU/lb
Embodied Water
280 L/kg 33 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
22 MJ/m3
Resilience: Unit (Modulus of Resilience)
220 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
22 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
17 points
Thermal Shock Resistance
16 points
Alloy Composition
| Ni | 49.2 to 60.1 | |
| Mo | 16 to 18 | |
| Cr | 15.5 to 17.5 | |
| Fe | 4.5 to 7.5 | |
| W | 3.8 to 5.3 | |
| Mn | 0 to 1.0 | |
| Si | 0 to 1.0 | |
| V | 0.2 to 0.4 | |
| C | 0 to 0.12 | |
| P | 0 to 0.040 | |
| S | 0 to 0.030 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM A494: Standard Specification for Castings, Nickel and Nickel Alloy
Microstructure of Superalloys, Madeleine Durand-Charre, 1998
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