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S31727 Stainless Steel vs. C96700 Copper

S31727 stainless steel belongs to the iron alloys classification, while C96700 copper belongs to the copper alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 C96700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 40
10
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
53
Tensile Strength: Ultimate (UTS), MPa 630
1210
Tensile Strength: Yield (Proof), MPa 270
550

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1010
310
Melting Completion (Liquidus), °C 1440
1170
Melting Onset (Solidus), °C 1390
1110
Specific Heat Capacity, J/kg-K 470
400
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 24
90
Density, g/cm3 8.0
8.8
Embodied Carbon, kg CO2/kg material 4.7
9.5
Embodied Energy, MJ/kg 64
140
Embodied Water, L/kg 180
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
99
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1080
Stiffness to Weight: Axial, points 14
8.9
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 22
38
Strength to Weight: Bending, points 20
29
Thermal Shock Resistance, points 14
40

Alloy Composition

Beryllium (Be), % 0
1.1 to 1.2
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17.5 to 19
0
Copper (Cu), % 2.8 to 4.0
62.4 to 68.8
Iron (Fe), % 53.7 to 61.3
0.4 to 1.0
Lead (Pb), % 0
0 to 0.010
Manganese (Mn), % 0 to 1.0
0.4 to 1.0
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
29 to 33
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.15 to 0.35
Zirconium (Zr), % 0
0.15 to 0.35
Residuals, % 0
0 to 0.5