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Grade CW6MC Nickel vs. Grade N7M Nickel

Both grade CW6MC nickel and grade N7M nickel are nickel alloys. Both are furnished in the heat treated (HT) condition. They have 74% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade CW6MC nickel and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 28
22
Fatigue Strength, MPa 210
190
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 79
85
Tensile Strength: Ultimate (UTS), MPa 540
590
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Maximum Temperature: Mechanical, °C 980
900
Melting Completion (Liquidus), °C 1480
1650
Melting Onset (Solidus), °C 1430
1590
Specific Heat Capacity, J/kg-K 440
390
Thermal Expansion, µm/m-K 12
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 80
75
Density, g/cm3 8.6
9.3
Embodied Carbon, kg CO2/kg material 14
16
Embodied Energy, MJ/kg 200
200
Embodied Water, L/kg 290
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 240
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 17
17
Thermal Shock Resistance, points 15
19

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.070
Chromium (Cr), % 20 to 23
0 to 1.0
Iron (Fe), % 0 to 5.0
0 to 3.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 8.0 to 10
30 to 33
Nickel (Ni), % 55.4 to 68.9
60.9 to 70
Niobium (Nb), % 3.2 to 4.5
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030