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C18700 Copper vs. S13800 Stainless Steel

C18700 copper belongs to the copper alloys classification, while S13800 stainless steel belongs to the iron alloys. There are 29 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 C18700 copper and the bottom bar is S13800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 9.0 to 9.6
11 to 18
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
77
Shear Strength, MPa 170 to 190
610 to 1030
Tensile Strength: Ultimate (UTS), MPa 290 to 330
980 to 1730
Tensile Strength: Yield (Proof), MPa 230 to 250
660 to 1580

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
810
Melting Completion (Liquidus), °C 1080
1450
Melting Onset (Solidus), °C 950
1410
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 380
16
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 99
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 30
15
Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 2.6
3.4
Embodied Energy, MJ/kg 41
46
Embodied Water, L/kg 310
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
150 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
1090 to 5490
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 9.0 to 10
35 to 61
Strength to Weight: Bending, points 11 to 12
28 to 41
Thermal Diffusivity, mm2/s 110
4.3
Thermal Shock Resistance, points 10 to 12
33 to 58

Alloy Composition

Aluminum (Al), % 0
0.9 to 1.4
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
12.3 to 13.2
Copper (Cu), % 98 to 99.2
0
Iron (Fe), % 0
73.6 to 77.3
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
0 to 0.2
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
7.5 to 8.5
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
0 to 0.1
Sulfur (S), % 0
0 to 0.0080
Residuals, % 0 to 0.5
0