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EN 1.4421 Stainless Steel vs. AWS ENiCu-7

EN 1.4421 stainless 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 (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.4421 stainless steel and the bottom bar is AWS ENiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
160
Elongation at Break, % 11 to 17
34
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
62
Tensile Strength: Ultimate (UTS), MPa 880 to 1100
550

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1440
1270
Melting Onset (Solidus), °C 1400
1230
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
50
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 2.6
8.0
Embodied Energy, MJ/kg 36
110
Embodied Water, L/kg 130
250

Common Calculations

Stiffness to Weight: Axial, points 14
10
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 31 to 39
17
Strength to Weight: Bending, points 26 to 30
17
Thermal Diffusivity, mm2/s 4.4
5.5
Thermal Shock Resistance, points 31 to 39
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.75
Carbon (C), % 0 to 0.060
0 to 0.1
Chromium (Cr), % 15.5 to 17.5
0
Copper (Cu), % 0
20.6 to 38
Iron (Fe), % 74.4 to 80.5
0 to 2.5
Manganese (Mn), % 0 to 1.0
0 to 4.0
Molybdenum (Mo), % 0 to 0.7
0
Nickel (Ni), % 4.0 to 5.5
62 to 69
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.8
0 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0
0 to 1.0
Residuals, % 0
0 to 0.5