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C81400 Copper vs. S33550 Stainless Steel

C81400 copper belongs to the copper alloys classification, while S33550 stainless steel belongs to the iron alloys. There are 29 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 S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
40
Poisson's Ratio 0.34
0.27
Rockwell B Hardness 69
82
Shear Modulus, GPa 41
79
Tensile Strength: Ultimate (UTS), MPa 370
680
Tensile Strength: Yield (Proof), MPa 250
310

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1090
1400
Melting Onset (Solidus), °C 1070
1360
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 260
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 61
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 33
24
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
4.3
Embodied Energy, MJ/kg 45
61
Embodied Water, L/kg 310
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
220
Resilience: Unit (Modulus of Resilience), kJ/m3 260
250
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
24
Strength to Weight: Bending, points 13
22
Thermal Diffusivity, mm2/s 75
3.9
Thermal Shock Resistance, points 13
15

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 0.6 to 1.0
25 to 28
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
16.5 to 20
Niobium (Nb), % 0
0.050 to 0.15
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0