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C14181 Copper vs. S20431 Stainless Steel

C14181 copper belongs to the copper alloys classification, while S20431 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C14181 copper and the bottom bar is S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 15
46
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
76
Tensile Strength: Ultimate (UTS), MPa 210
710
Tensile Strength: Yield (Proof), MPa 130
350

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
890
Melting Completion (Liquidus), °C 1080
1400
Melting Onset (Solidus), °C 1080
1360
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 380
15
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 31
12
Density, g/cm3 9.0
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.5
Embodied Energy, MJ/kg 41
36
Embodied Water, L/kg 310
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
270
Resilience: Unit (Modulus of Resilience), kJ/m3 69
310
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 6.5
25
Strength to Weight: Bending, points 8.8
23
Thermal Diffusivity, mm2/s 110
4.0
Thermal Shock Resistance, points 7.4
15

Alloy Composition

Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0 to 0.0050
0 to 0.12
Chromium (Cr), % 0
17 to 18
Copper (Cu), % 99.9 to 100
1.5 to 3.5
Iron (Fe), % 0
66.1 to 74.4
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
5.0 to 7.0
Nickel (Ni), % 0
2.0 to 4.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.0020
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.0020
0