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EN 1.4421 Stainless Steel vs. CC381H Copper-nickel

EN 1.4421 stainless steel belongs to the iron alloys classification, while CC381H copper-nickel belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 CC381H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 11 to 17
20
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
52
Tensile Strength: Ultimate (UTS), MPa 880 to 1100
380
Tensile Strength: Yield (Proof), MPa 620 to 950
140

Thermal Properties

Latent Heat of Fusion, J/g 280
240
Maximum Temperature: Mechanical, °C 870
260
Melting Completion (Liquidus), °C 1440
1180
Melting Onset (Solidus), °C 1400
1120
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 16
30
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
40
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 2.6
5.0
Embodied Energy, MJ/kg 36
73
Embodied Water, L/kg 130
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 140
60
Resilience: Unit (Modulus of Resilience), kJ/m3 960 to 2270
68
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 31 to 39
12
Strength to Weight: Bending, points 26 to 30
13
Thermal Diffusivity, mm2/s 4.4
8.4
Thermal Shock Resistance, points 31 to 39
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 15.5 to 17.5
0
Copper (Cu), % 0
64.5 to 69.9
Iron (Fe), % 74.4 to 80.5
0.5 to 1.5
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 1.0
0.6 to 1.2
Molybdenum (Mo), % 0 to 0.7
0
Nickel (Ni), % 4.0 to 5.5
29 to 31
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 0.8
0 to 0.1
Sulfur (S), % 0 to 0.020
0 to 0.010
Zinc (Zn), % 0
0 to 0.5