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C70250 Copper vs. AISI 309Cb Stainless Steel

C70250 copper belongs to the copper alloys classification, while AISI 309Cb stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C70250 copper and the bottom bar is AISI 309Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 44
78
Tensile Strength: Ultimate (UTS), MPa 520 to 740
580

Thermal Properties

Latent Heat of Fusion, J/g 220
300
Maximum Temperature: Mechanical, °C 210
1090
Melting Completion (Liquidus), °C 1100
1420
Melting Onset (Solidus), °C 1080
1380
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 170
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36 to 50
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 37 to 51
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
23
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.9
4.1
Embodied Energy, MJ/kg 45
59
Embodied Water, L/kg 310
170

Common Calculations

Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 16 to 23
20
Strength to Weight: Bending, points 16 to 21
20
Thermal Diffusivity, mm2/s 49
4.0
Thermal Shock Resistance, points 18 to 26
13

Alloy Composition

Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 92.7 to 97.5
0
Iron (Fe), % 0
56 to 66
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.050 to 0.3
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Nickel (Ni), % 2.2 to 4.2
12 to 16
Niobium (Nb), % 0
0 to 1.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.25 to 1.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0