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C81400 Copper vs. EN 1.4581 Stainless Steel

C81400 copper belongs to the copper alloys classification, while EN 1.4581 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C81400 copper and the bottom bar is EN 1.4581 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
28
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 41
78
Tensile Strength: Ultimate (UTS), MPa 370
510
Tensile Strength: Yield (Proof), MPa 250
210

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
990
Melting Completion (Liquidus), °C 1090
1440
Melting Onset (Solidus), °C 1070
1400
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 260
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 61
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 33
21
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
4.2
Embodied Energy, MJ/kg 45
59
Embodied Water, L/kg 310
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
120
Resilience: Unit (Modulus of Resilience), kJ/m3 260
110
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
18
Strength to Weight: Bending, points 13
18
Thermal Diffusivity, mm2/s 75
3.9
Thermal Shock Resistance, points 13
12

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0.6 to 1.0
18 to 20
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
61.4 to 71
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0
9.0 to 12
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.5
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0