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C18700 Copper vs. S41003 Stainless Steel

C18700 copper belongs to the copper alloys classification, while S41003 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 C18700 copper and the bottom bar is S41003 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 9.0 to 9.6
21
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
76
Shear Strength, MPa 170 to 190
320
Tensile Strength: Ultimate (UTS), MPa 290 to 330
520
Tensile Strength: Yield (Proof), MPa 230 to 250
310

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Maximum Temperature: Mechanical, °C 200
720
Melting Completion (Liquidus), °C 1080
1440
Melting Onset (Solidus), °C 950
1400
Specific Heat Capacity, J/kg-K 380
480
Thermal Conductivity, W/m-K 380
27
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 99
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
7.0
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.9
Embodied Energy, MJ/kg 41
27
Embodied Water, L/kg 310
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
92
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
240
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 9.0 to 10
19
Strength to Weight: Bending, points 11 to 12
18
Thermal Diffusivity, mm2/s 110
7.2
Thermal Shock Resistance, points 10 to 12
19

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
10.5 to 12.5
Copper (Cu), % 98 to 99.2
0
Iron (Fe), % 0
83.4 to 89.5
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 1.5
Nitrogen (N), % 0
0 to 0.030
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