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C17500 Copper vs. S31727 Stainless Steel

C17500 copper belongs to the copper alloys classification, while S31727 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 S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 6.0 to 30
40
Fatigue Strength, MPa 170 to 310
240
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 38 to 99
83
Shear Modulus, GPa 45
78
Shear Strength, MPa 200 to 520
430
Tensile Strength: Ultimate (UTS), MPa 310 to 860
630
Tensile Strength: Yield (Proof), MPa 170 to 760
270

Thermal Properties

Latent Heat of Fusion, J/g 220
290
Maximum Temperature: Mechanical, °C 220
1010
Melting Completion (Liquidus), °C 1060
1440
Melting Onset (Solidus), °C 1020
1390
Specific Heat Capacity, J/kg-K 390
470
Thermal Expansion, µm/m-K 18
16

Otherwise Unclassified Properties

Base Metal Price, % relative 60
24
Density, g/cm3 8.9
8.0
Embodied Carbon, kg CO2/kg material 4.7
4.7
Embodied Energy, MJ/kg 73
64
Embodied Water, L/kg 320
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
200
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 2390
190
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 9.7 to 27
22
Strength to Weight: Bending, points 11 to 23
20
Thermal Shock Resistance, points 11 to 29
14

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 19
Cobalt (Co), % 2.4 to 2.7
0
Copper (Cu), % 95.6 to 97.2
2.8 to 4.0
Iron (Fe), % 0 to 0.1
53.7 to 61.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0