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C18400 Copper vs. S44537 Stainless Steel

C18400 copper belongs to the copper alloys classification, while S44537 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 C18400 copper and the bottom bar is S44537 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 13 to 50
21
Poisson's Ratio 0.34
0.27
Rockwell B Hardness 16 to 84
80
Shear Modulus, GPa 44
79
Shear Strength, MPa 190 to 310
320
Tensile Strength: Ultimate (UTS), MPa 270 to 490
510
Tensile Strength: Yield (Proof), MPa 110 to 480
360

Thermal Properties

Latent Heat of Fusion, J/g 210
290
Maximum Temperature: Mechanical, °C 200
1000
Melting Completion (Liquidus), °C 1080
1480
Melting Onset (Solidus), °C 1070
1430
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 320
21
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 81
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 31
19
Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 2.6
3.4
Embodied Energy, MJ/kg 41
50
Embodied Water, L/kg 310
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63 to 120
95
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 980
320
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 8.5 to 15
18
Strength to Weight: Bending, points 10 to 16
18
Thermal Diffusivity, mm2/s 94
5.6
Thermal Shock Resistance, points 9.6 to 17
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Arsenic (As), % 0 to 0.0050
0
Calcium (Ca), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.4 to 1.2
20 to 24
Copper (Cu), % 97.2 to 99.6
0 to 0.5
Iron (Fe), % 0 to 0.15
69 to 78.6
Lanthanum (La), % 0
0.040 to 0.2
Lithium (Li), % 0 to 0.050
0
Manganese (Mn), % 0
0 to 0.8
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0 to 0.050
0 to 0.050
Silicon (Si), % 0 to 0.1
0.1 to 0.6
Sulfur (S), % 0
0 to 0.0060
Titanium (Ti), % 0
0.020 to 0.2
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 0 to 0.7
0
Residuals, % 0 to 0.5
0