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Nickel 686 vs. AWS ERNiCu-7

Both nickel 686 and AWS ERNiCu-7 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 nickel 686 and the bottom bar is AWS ERNiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
160
Elongation at Break, % 51
34
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 77
61
Tensile Strength: Ultimate (UTS), MPa 780
550

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1380
1280
Melting Onset (Solidus), °C 1340
1240
Specific Heat Capacity, J/kg-K 420
440
Thermal Conductivity, W/m-K 9.8
20
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
3.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 70
50
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 12
8.5
Embodied Energy, MJ/kg 170
120
Embodied Water, L/kg 300
250

Common Calculations

Stiffness to Weight: Axial, points 14
10
Stiffness to Weight: Bending, points 22
21
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 21
17
Thermal Diffusivity, mm2/s 2.6
5.3
Thermal Shock Resistance, points 21
19

Alloy Composition

Aluminum (Al), % 0
0 to 1.3
Carbon (C), % 0 to 0.010
0 to 0.15
Chromium (Cr), % 19 to 23
0
Copper (Cu), % 0
18.3 to 36.5
Iron (Fe), % 0 to 5.0
0 to 2.5
Manganese (Mn), % 0 to 0.75
0 to 4.0
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
62 to 69
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.080
0 to 1.3
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0.020 to 0.25
1.5 to 3.0
Tungsten (W), % 3.0 to 4.4
0
Residuals, % 0
0 to 0.5