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C81400 Copper vs. AISI 409Cb Stainless Steel

C81400 copper belongs to the copper alloys classification, while AISI 409Cb stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C81400 copper and the bottom bar is AISI 409Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 11
24
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 41
75
Tensile Strength: Ultimate (UTS), MPa 370
420
Tensile Strength: Yield (Proof), MPa 250
200

Thermal Properties

Latent Heat of Fusion, J/g 210
270
Maximum Temperature: Mechanical, °C 200
710
Melting Completion (Liquidus), °C 1090
1450
Melting Onset (Solidus), °C 1070
1410
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 260
25
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 61
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 33
8.5
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.2
Embodied Energy, MJ/kg 45
31
Embodied Water, L/kg 310
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
83
Resilience: Unit (Modulus of Resilience), kJ/m3 260
100
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
15
Strength to Weight: Bending, points 13
16
Thermal Diffusivity, mm2/s 75
6.7
Thermal Shock Resistance, points 13
15

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0.6 to 1.0
10.5 to 11.7
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
84.9 to 89.5
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.75
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Residuals, % 0 to 0.5
0