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S31266 Stainless Steel vs. C82700 Copper

S31266 stainless steel belongs to the iron alloys classification, while C82700 copper belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S31266 stainless steel and the bottom bar is C82700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 40
1.8
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 81
46
Tensile Strength: Ultimate (UTS), MPa 860
1200
Tensile Strength: Yield (Proof), MPa 470
1020

Thermal Properties

Latent Heat of Fusion, J/g 310
240
Maximum Temperature: Mechanical, °C 1100
300
Melting Completion (Liquidus), °C 1470
950
Melting Onset (Solidus), °C 1420
860
Specific Heat Capacity, J/kg-K 460
380
Thermal Conductivity, W/m-K 12
130
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
20
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
21

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.7
Embodied Carbon, kg CO2/kg material 6.5
12
Embodied Energy, MJ/kg 89
180
Embodied Water, L/kg 220
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
21
Resilience: Unit (Modulus of Resilience), kJ/m3 540
4260
Stiffness to Weight: Axial, points 14
7.8
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 29
38
Strength to Weight: Bending, points 24
29
Thermal Diffusivity, mm2/s 3.1
39
Thermal Shock Resistance, points 18
41

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Beryllium (Be), % 0
2.4 to 2.6
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 23 to 25
0 to 0.090
Copper (Cu), % 1.0 to 2.5
94.6 to 96.7
Iron (Fe), % 34.1 to 46
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 2.0 to 4.0
0
Molybdenum (Mo), % 5.2 to 6.2
0
Nickel (Ni), % 21 to 24
1.0 to 1.5
Nitrogen (N), % 0.35 to 0.6
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0
0 to 0.1
Tungsten (W), % 1.5 to 2.5
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5