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Grade CW6M Nickel vs. Nickel 684

Both grade CW6M nickel and nickel 684 are nickel alloys. They have 77% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade CW6M nickel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 29
11
Fatigue Strength, MPa 210
390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 84
76
Tensile Strength: Ultimate (UTS), MPa 560
1190
Tensile Strength: Yield (Proof), MPa 310
800

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Maximum Temperature: Mechanical, °C 970
1000
Melting Completion (Liquidus), °C 1530
1370
Melting Onset (Solidus), °C 1470
1320
Specific Heat Capacity, J/kg-K 430
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 65
75
Density, g/cm3 8.8
8.3
Embodied Carbon, kg CO2/kg material 13
10
Embodied Energy, MJ/kg 170
140
Embodied Water, L/kg 300
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
120
Resilience: Unit (Modulus of Resilience), kJ/m3 220
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 18
40
Strength to Weight: Bending, points 17
30
Thermal Shock Resistance, points 16
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.070
0 to 0.15
Chromium (Cr), % 17 to 20
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 0 to 3.0
0 to 4.0
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 17 to 20
3.0 to 5.0
Nickel (Ni), % 54.9 to 66
42.7 to 64
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3