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AWS ENiCu-7 vs. Nickel 686

Both AWS ENiCu-7 and nickel 686 are nickel alloys. They have 58% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AWS ENiCu-7 and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
220
Elongation at Break, % 34
51
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
77
Tensile Strength: Ultimate (UTS), MPa 550
780

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1270
1380
Melting Onset (Solidus), °C 1230
1340
Specific Heat Capacity, J/kg-K 430
420
Thermal Conductivity, W/m-K 21
9.8
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 50
70
Density, g/cm3 8.7
9.0
Embodied Carbon, kg CO2/kg material 8.0
12
Embodied Energy, MJ/kg 110
170
Embodied Water, L/kg 250
300

Common Calculations

Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
22
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
21
Thermal Diffusivity, mm2/s 5.5
2.6
Thermal Shock Resistance, points 18
21

Alloy Composition

Aluminum (Al), % 0 to 0.75
0
Carbon (C), % 0 to 0.1
0 to 0.010
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 20.6 to 38
0
Iron (Fe), % 0 to 2.5
0 to 5.0
Manganese (Mn), % 0 to 4.0
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 62 to 69
49.5 to 63
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 0.080
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0 to 1.0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4
Residuals, % 0 to 0.5
0