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C19800 Copper vs. S21640 Stainless Steel

C19800 copper belongs to the copper alloys classification, while S21640 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C19800 copper and the bottom bar is S21640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 9.0 to 12
46
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
78
Shear Strength, MPa 260 to 330
520
Tensile Strength: Ultimate (UTS), MPa 430 to 550
740
Tensile Strength: Yield (Proof), MPa 420 to 550
350

Thermal Properties

Latent Heat of Fusion, J/g 210
290
Maximum Temperature: Mechanical, °C 200
940
Melting Completion (Liquidus), °C 1070
1430
Melting Onset (Solidus), °C 1050
1380
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 260
15
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 62
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 30
17
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 2.8
3.6
Embodied Energy, MJ/kg 43
51
Embodied Water, L/kg 320
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 49 to 52
280
Resilience: Unit (Modulus of Resilience), kJ/m3 770 to 1320
300
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 14 to 17
27
Strength to Weight: Bending, points 14 to 17
23
Thermal Diffusivity, mm2/s 75
4.0
Thermal Shock Resistance, points 15 to 20
16

Alloy Composition

Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17.5 to 19.5
Copper (Cu), % 95.7 to 99.47
0
Iron (Fe), % 0.020 to 0.5
63 to 74.3
Magnesium (Mg), % 0.1 to 1.0
0
Manganese (Mn), % 0
3.5 to 6.5
Molybdenum (Mo), % 0
0.5 to 2.0
Nickel (Ni), % 0
4.0 to 6.5
Niobium (Nb), % 0
0.1 to 1.0
Nitrogen (N), % 0
0.080 to 0.3
Phosphorus (P), % 0.010 to 0.1
0 to 0.060
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0.1 to 1.0
0
Zinc (Zn), % 0.3 to 1.5
0
Residuals, % 0 to 0.2
0