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C18700 Copper vs. EN 1.4122 Stainless Steel

C18700 copper belongs to the copper alloys classification, while EN 1.4122 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C18700 copper and the bottom bar is EN 1.4122 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 9.0 to 9.6
14
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
77
Shear Strength, MPa 170 to 190
480 to 520
Tensile Strength: Ultimate (UTS), MPa 290 to 330
790 to 850
Tensile Strength: Yield (Proof), MPa 230 to 250
450 to 630

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
870
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
15
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 99
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 30
9.5
Density, g/cm3 9.0
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.4
Embodied Energy, MJ/kg 41
33
Embodied Water, L/kg 310
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
93 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
520 to 1000
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 9.0 to 10
28 to 31
Strength to Weight: Bending, points 11 to 12
25 to 26
Thermal Diffusivity, mm2/s 110
4.0
Thermal Shock Resistance, points 10 to 12
28 to 30

Alloy Composition

Carbon (C), % 0
0.33 to 0.45
Chromium (Cr), % 0
15.5 to 17.5
Copper (Cu), % 98 to 99.2
0
Iron (Fe), % 0
77.2 to 83.4
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0.8 to 1.3
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Residuals, % 0 to 0.5
0