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AWS ENiCu-7 vs. Nickel 684

Both AWS ENiCu-7 and nickel 684 are nickel alloys. They have 56% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AWS ENiCu-7 and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 34
11
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
76
Tensile Strength: Ultimate (UTS), MPa 550
1190

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1270
1370
Melting Onset (Solidus), °C 1230
1320
Specific Heat Capacity, J/kg-K 430
470
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 50
75
Density, g/cm3 8.7
8.3
Embodied Carbon, kg CO2/kg material 8.0
10
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 250
360

Common Calculations

Stiffness to Weight: Axial, points 10
13
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 17
40
Strength to Weight: Bending, points 17
30
Thermal Shock Resistance, points 18
34

Alloy Composition

Aluminum (Al), % 0 to 0.75
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 0
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 20.6 to 38
0 to 0.15
Iron (Fe), % 0 to 2.5
0 to 4.0
Manganese (Mn), % 0 to 4.0
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 62 to 69
42.7 to 64
Phosphorus (P), % 0 to 0.020
0 to 0.015
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0 to 1.0
2.5 to 3.3
Residuals, % 0 to 0.5
0