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C81400 Copper vs. EN 1.4938 Stainless Steel

C81400 copper belongs to the copper alloys classification, while EN 1.4938 stainless steel belongs to the iron 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 C81400 copper and the bottom bar is EN 1.4938 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
16 to 17
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 41
76
Tensile Strength: Ultimate (UTS), MPa 370
870 to 1030
Tensile Strength: Yield (Proof), MPa 250
640 to 870

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Maximum Temperature: Mechanical, °C 200
750
Melting Completion (Liquidus), °C 1090
1460
Melting Onset (Solidus), °C 1070
1420
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 260
30
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 61
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 33
10
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.3
Embodied Energy, MJ/kg 45
47
Embodied Water, L/kg 310
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
140 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 260
1050 to 1920
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
31 to 37
Strength to Weight: Bending, points 13
26 to 29
Thermal Diffusivity, mm2/s 75
8.1
Thermal Shock Resistance, points 13
30 to 35

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0.080 to 0.15
Chromium (Cr), % 0.6 to 1.0
11 to 12.5
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
80.5 to 84.8
Manganese (Mn), % 0
0.4 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0
0.020 to 0.040
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Vanadium (V), % 0
0.25 to 0.4
Residuals, % 0 to 0.5
0