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S31727 Stainless Steel vs. C18600 Copper

S31727 stainless steel belongs to the iron alloys classification, while C18600 copper belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is C18600 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 40
8.0 to 11
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 78
44
Shear Strength, MPa 430
310 to 340
Tensile Strength: Ultimate (UTS), MPa 630
520 to 580
Tensile Strength: Yield (Proof), MPa 270
500 to 520

Thermal Properties

Latent Heat of Fusion, J/g 290
210
Maximum Temperature: Mechanical, °C 1010
200
Melting Completion (Liquidus), °C 1440
1090
Melting Onset (Solidus), °C 1390
1070
Specific Heat Capacity, J/kg-K 470
390
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 24
31
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 4.7
2.9
Embodied Energy, MJ/kg 64
46
Embodied Water, L/kg 180
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
44 to 58
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1060 to 1180
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 22
16 to 18
Strength to Weight: Bending, points 20
16 to 17
Thermal Shock Resistance, points 14
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17.5 to 19
0.1 to 1.0
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 2.8 to 4.0
96.5 to 99.55
Iron (Fe), % 53.7 to 61.3
0.25 to 0.8
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
0 to 0.25
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.050 to 0.5
Zirconium (Zr), % 0
0.050 to 0.4
Residuals, % 0
0 to 0.5