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AWS ENiCu-7 vs. S31100 Stainless Steel

AWS ENiCu-7 belongs to the nickel alloys classification, while S31100 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS ENiCu-7 and the bottom bar is S31100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 34
4.5
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 62
79
Tensile Strength: Ultimate (UTS), MPa 550
1000

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1270
1420
Melting Onset (Solidus), °C 1230
1380
Specific Heat Capacity, J/kg-K 430
480
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 50
16
Density, g/cm3 8.7
7.7
Embodied Carbon, kg CO2/kg material 8.0
3.1
Embodied Energy, MJ/kg 110
44
Embodied Water, L/kg 250
170

Common Calculations

Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 17
36
Strength to Weight: Bending, points 17
29
Thermal Diffusivity, mm2/s 5.5
4.2
Thermal Shock Resistance, points 18
28

Alloy Composition

Aluminum (Al), % 0 to 0.75
0
Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 0
25 to 27
Copper (Cu), % 20.6 to 38
0
Iron (Fe), % 0 to 2.5
63.6 to 69
Manganese (Mn), % 0 to 4.0
0 to 1.0
Nickel (Ni), % 62 to 69
6.0 to 7.0
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 1.0
0 to 0.25
Residuals, % 0 to 0.5
0