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C14520 Copper vs. S31266 Stainless Steel

C14520 copper belongs to the copper alloys classification, while S31266 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C14520 copper and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 9.0 to 9.6
40
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
81
Shear Strength, MPa 170 to 190
590
Tensile Strength: Ultimate (UTS), MPa 290 to 330
860
Tensile Strength: Yield (Proof), MPa 230 to 250
470

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1080
1470
Melting Onset (Solidus), °C 1050
1420
Specific Heat Capacity, J/kg-K 390
460
Thermal Conductivity, W/m-K 320
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 85
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 85
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 33
37
Density, g/cm3 8.9
8.2
Embodied Carbon, kg CO2/kg material 2.6
6.5
Embodied Energy, MJ/kg 42
89
Embodied Water, L/kg 310
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
290
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
540
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 9.0 to 10
29
Strength to Weight: Bending, points 11 to 12
24
Thermal Diffusivity, mm2/s 94
3.1
Thermal Shock Resistance, points 10 to 12
18

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
23 to 25
Copper (Cu), % 99.2 to 99.596
1.0 to 2.5
Iron (Fe), % 0
34.1 to 46
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 0
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0.0040 to 0.020
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Tellurium (Te), % 0.4 to 0.7
0
Tungsten (W), % 0
1.5 to 2.5