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EN 1.7231 Steel vs. AWS ENiCu-7

EN 1.7231 steel belongs to the iron alloys classification, while AWS ENiCu-7 belongs to the nickel alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.7231 steel and the bottom bar is AWS ENiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
160
Elongation at Break, % 11 to 12
34
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
62
Tensile Strength: Ultimate (UTS), MPa 790 to 930
550

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1460
1270
Melting Onset (Solidus), °C 1420
1230
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 46
21
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
50
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 1.5
8.0
Embodied Energy, MJ/kg 20
110
Embodied Water, L/kg 51
250

Common Calculations

Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 28 to 33
17
Strength to Weight: Bending, points 24 to 27
17
Thermal Diffusivity, mm2/s 12
5.5
Thermal Shock Resistance, points 23 to 27
18

Alloy Composition


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Aluminum (Al), % 0
0 to 0.75
Carbon (C), % 0.38 to 0.45
0 to 0.1
Chromium (Cr), % 0.8 to 1.2
0
Copper (Cu), % 0
20.6 to 38
Iron (Fe), % 96.4 to 98.1
0 to 2.5
Manganese (Mn), % 0.6 to 1.0
0 to 4.0
Molybdenum (Mo), % 0.15 to 0.3
0
Nickel (Ni), % 0
62 to 69
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.6
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0 to 1.0
Residuals, % 0
0 to 0.5