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C17500 Copper vs. S21603 Stainless Steel

C17500 copper belongs to the copper alloys classification, while S21603 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C17500 copper and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 6.0 to 30
45
Fatigue Strength, MPa 170 to 310
360
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 38 to 99
88
Shear Modulus, GPa 45
79
Shear Strength, MPa 200 to 520
490
Tensile Strength: Ultimate (UTS), MPa 310 to 860
690
Tensile Strength: Yield (Proof), MPa 170 to 760
390

Thermal Properties

Latent Heat of Fusion, J/g 220
290
Maximum Temperature: Mechanical, °C 220
990
Melting Completion (Liquidus), °C 1060
1420
Melting Onset (Solidus), °C 1020
1380
Specific Heat Capacity, J/kg-K 390
480
Thermal Expansion, µm/m-K 18
17

Otherwise Unclassified Properties

Base Metal Price, % relative 60
17
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 4.7
3.6
Embodied Energy, MJ/kg 73
50
Embodied Water, L/kg 320
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
270
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 2390
380
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 9.7 to 27
25
Strength to Weight: Bending, points 11 to 23
22
Thermal Shock Resistance, points 11 to 29
15

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Beryllium (Be), % 0.4 to 0.7
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 22
Cobalt (Co), % 2.4 to 2.7
0
Copper (Cu), % 95.6 to 97.2
0
Iron (Fe), % 0 to 0.1
57.6 to 67.8
Manganese (Mn), % 0
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0