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AWS ERNiCu-7 vs. EN 1.4401 Stainless Steel

AWS ERNiCu-7 belongs to the nickel alloys classification, while EN 1.4401 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 ERNiCu-7 and the bottom bar is EN 1.4401 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 34
14 to 40
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 61
78
Tensile Strength: Ultimate (UTS), MPa 550
600 to 900

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1280
1440
Melting Onset (Solidus), °C 1240
1400
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 20
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 50
19
Density, g/cm3 8.7
7.9
Embodied Carbon, kg CO2/kg material 8.5
3.8
Embodied Energy, MJ/kg 120
52
Embodied Water, L/kg 250
150

Common Calculations

Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 18
21 to 32
Strength to Weight: Bending, points 17
20 to 26
Thermal Diffusivity, mm2/s 5.3
4.0
Thermal Shock Resistance, points 19
13 to 20

Alloy Composition

Aluminum (Al), % 0 to 1.3
0
Carbon (C), % 0 to 0.15
0 to 0.070
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 18.3 to 36.5
0
Iron (Fe), % 0 to 2.5
62.8 to 71.5
Manganese (Mn), % 0 to 4.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 62 to 69
10 to 13
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 1.3
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 1.5 to 3.0
0
Residuals, % 0 to 0.5
0