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C18700 Copper vs. EN 1.3975 Stainless Steel

C18700 copper belongs to the copper alloys classification, while EN 1.3975 stainless steel belongs to the iron alloys. There are 24 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 C18700 copper and the bottom bar is EN 1.3975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 9.0 to 9.6
27
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
76
Tensile Strength: Ultimate (UTS), MPa 290 to 330
660
Tensile Strength: Yield (Proof), MPa 230 to 250
320

Thermal Properties

Latent Heat of Fusion, J/g 210
340
Maximum Temperature: Mechanical, °C 200
910
Melting Completion (Liquidus), °C 1080
1360
Melting Onset (Solidus), °C 950
1320
Specific Heat Capacity, J/kg-K 380
500
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 30
15
Density, g/cm3 9.0
7.5
Embodied Carbon, kg CO2/kg material 2.6
3.3
Embodied Energy, MJ/kg 41
47
Embodied Water, L/kg 310
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
150
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
270
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
26
Strength to Weight: Axial, points 9.0 to 10
24
Strength to Weight: Bending, points 11 to 12
22
Thermal Shock Resistance, points 10 to 12
15

Alloy Composition

Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 98 to 99.2
0
Iron (Fe), % 0
58.2 to 65.4
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
7.0 to 9.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0