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S41050 Stainless Steel vs. C18100 Copper

S41050 stainless steel belongs to the iron alloys classification, while C18100 copper belongs to the copper alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S41050 stainless steel and the bottom bar is C18100 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 25
8.3
Poisson's Ratio 0.28
0.34
Rockwell B Hardness 77
80
Shear Modulus, GPa 76
47
Shear Strength, MPa 300
300
Tensile Strength: Ultimate (UTS), MPa 470
510
Tensile Strength: Yield (Proof), MPa 230
460

Thermal Properties

Latent Heat of Fusion, J/g 270
210
Maximum Temperature: Mechanical, °C 720
200
Melting Completion (Liquidus), °C 1440
1080
Melting Onset (Solidus), °C 1400
1020
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 27
320
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
80
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
81

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
31
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 1.9
2.7
Embodied Energy, MJ/kg 27
43
Embodied Water, L/kg 97
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98
40
Resilience: Unit (Modulus of Resilience), kJ/m3 140
900
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 17
16
Strength to Weight: Bending, points 17
16
Thermal Diffusivity, mm2/s 7.2
94
Thermal Shock Resistance, points 17
18

Alloy Composition

Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 10.5 to 12.5
0.4 to 1.2
Copper (Cu), % 0
98.7 to 99.49
Iron (Fe), % 84.2 to 88.9
0
Magnesium (Mg), % 0
0.030 to 0.060
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 0.6 to 1.1
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zirconium (Zr), % 0
0.080 to 0.2
Residuals, % 0
0 to 0.5