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AWS ERNiCu-7 vs. EN 1.6579 Steel

AWS ERNiCu-7 belongs to the nickel alloys classification, while EN 1.6579 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiCu-7 and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Elongation at Break, % 34
11 to 14
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 61
73
Tensile Strength: Ultimate (UTS), MPa 550
850 to 980

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Melting Completion (Liquidus), °C 1280
1460
Melting Onset (Solidus), °C 1240
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 20
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.2
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 50
3.7
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 8.5
1.7
Embodied Energy, MJ/kg 120
22
Embodied Water, L/kg 250
56

Common Calculations

Stiffness to Weight: Axial, points 10
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 18
30 to 35
Strength to Weight: Bending, points 17
25 to 28
Thermal Diffusivity, mm2/s 5.3
11
Thermal Shock Resistance, points 19
25 to 29

Alloy Composition

Aluminum (Al), % 0 to 1.3
0
Carbon (C), % 0 to 0.15
0.32 to 0.38
Chromium (Cr), % 0
1.4 to 1.7
Copper (Cu), % 18.3 to 36.5
0
Iron (Fe), % 0 to 2.5
94.2 to 96.1
Manganese (Mn), % 0 to 4.0
0.6 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.35
Nickel (Ni), % 62 to 69
1.4 to 1.7
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.3
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 1.5 to 3.0
0
Residuals, % 0 to 0.5
0