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AWS ERNiCu-7 vs. EN 1.4588 Stainless Steel

AWS ERNiCu-7 belongs to the nickel alloys classification, while EN 1.4588 stainless steel belongs to the iron alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiCu-7 and the bottom bar is EN 1.4588 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 34
34
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 61
80
Tensile Strength: Ultimate (UTS), MPa 550
540

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Melting Completion (Liquidus), °C 1280
1450
Melting Onset (Solidus), °C 1240
1410
Specific Heat Capacity, J/kg-K 440
460
Thermal Conductivity, W/m-K 20
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 50
33
Density, g/cm3 8.7
8.1
Embodied Carbon, kg CO2/kg material 8.5
6.2
Embodied Energy, MJ/kg 120
84
Embodied Water, L/kg 250
200

Common Calculations

Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 17
18
Thermal Diffusivity, mm2/s 5.3
4.0
Thermal Shock Resistance, points 19
11

Alloy Composition

Aluminum (Al), % 0 to 1.3
0
Carbon (C), % 0 to 0.15
0 to 0.020
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 18.3 to 36.5
0.5 to 1.5
Iron (Fe), % 0 to 2.5
41.2 to 50.4
Manganese (Mn), % 0 to 4.0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 62 to 69
24 to 26
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 1.3
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 1.5 to 3.0
0
Residuals, % 0 to 0.5
0