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Grade CW6M Nickel vs. Nickel 686

Both grade CW6M nickel and nickel 686 are nickel alloys. They have a moderately high 93% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade CW6M nickel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Elongation at Break, % 29
51
Fatigue Strength, MPa 210
410
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 84
77
Tensile Strength: Ultimate (UTS), MPa 560
780
Tensile Strength: Yield (Proof), MPa 310
350

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Maximum Temperature: Mechanical, °C 970
980
Melting Completion (Liquidus), °C 1530
1380
Melting Onset (Solidus), °C 1470
1340
Specific Heat Capacity, J/kg-K 430
420
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 65
70
Density, g/cm3 8.8
9.0
Embodied Carbon, kg CO2/kg material 13
12
Embodied Energy, MJ/kg 170
170
Embodied Water, L/kg 300
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
320
Resilience: Unit (Modulus of Resilience), kJ/m3 220
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 17
21
Thermal Shock Resistance, points 16
21

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.010
Chromium (Cr), % 17 to 20
19 to 23
Iron (Fe), % 0 to 3.0
0 to 5.0
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 17 to 20
15 to 17
Nickel (Ni), % 54.9 to 66
49.5 to 63
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.080
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4