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C18100 Copper vs. S41045 Stainless Steel

C18100 copper belongs to the copper alloys classification, while S41045 stainless steel belongs to the iron 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 C18100 copper and the bottom bar is S41045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 8.3
25
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 80
70
Shear Modulus, GPa 47
76
Shear Strength, MPa 300
280
Tensile Strength: Ultimate (UTS), MPa 510
430
Tensile Strength: Yield (Proof), MPa 460
230

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Maximum Temperature: Mechanical, °C 200
740
Melting Completion (Liquidus), °C 1080
1450
Melting Onset (Solidus), °C 1020
1400
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 320
29
Thermal Expansion, µm/m-K 17
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 31
8.5
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.2
Embodied Energy, MJ/kg 43
31
Embodied Water, L/kg 310
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
92
Resilience: Unit (Modulus of Resilience), kJ/m3 900
140
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 16
16
Strength to Weight: Bending, points 16
16
Thermal Diffusivity, mm2/s 94
7.8
Thermal Shock Resistance, points 18
16

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.4 to 1.2
12 to 13
Copper (Cu), % 98.7 to 99.49
0
Iron (Fe), % 0
83.8 to 88
Magnesium (Mg), % 0.030 to 0.060
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.6
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zirconium (Zr), % 0.080 to 0.2
0
Residuals, % 0 to 0.5
0