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S31100 Stainless Steel vs. C17300 Copper

S31100 stainless steel belongs to the iron alloys classification, while C17300 copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S31100 stainless steel and the bottom bar is C17300 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 4.5
3.0 to 23
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
45
Shear Strength, MPa 580
320 to 790
Tensile Strength: Ultimate (UTS), MPa 1000
500 to 1380
Tensile Strength: Yield (Proof), MPa 710
160 to 1200

Thermal Properties

Latent Heat of Fusion, J/g 300
230
Maximum Temperature: Mechanical, °C 1100
270
Melting Completion (Liquidus), °C 1420
980
Melting Onset (Solidus), °C 1380
870
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 16
110
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
22
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
23

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.8
Embodied Carbon, kg CO2/kg material 3.1
9.4
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 170
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
40 to 88
Resilience: Unit (Modulus of Resilience), kJ/m3 1240
110 to 5410
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 36
16 to 44
Strength to Weight: Bending, points 29
16 to 31
Thermal Diffusivity, mm2/s 4.2
32
Thermal Shock Resistance, points 28
17 to 48

Alloy Composition

Aluminum (Al), % 0
0 to 0.2
Beryllium (Be), % 0
1.8 to 2.0
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 25 to 27
0
Copper (Cu), % 0
95.5 to 97.8
Iron (Fe), % 63.6 to 69
0 to 0.4
Lead (Pb), % 0
0.2 to 0.6
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 6.0 to 7.0
0.2 to 0.6
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.25
0
Residuals, % 0
0 to 0.5