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C81400 Copper vs. AISI 440B Stainless Steel

C81400 copper belongs to the copper alloys classification, while AISI 440B stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C81400 copper and the bottom bar is AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
3.0 to 18
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 41
77
Tensile Strength: Ultimate (UTS), MPa 370
740 to 1930
Tensile Strength: Yield (Proof), MPa 250
430 to 1860

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
870
Melting Completion (Liquidus), °C 1090
1480
Melting Onset (Solidus), °C 1070
1370
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 260
23
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 61
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 33
9.0
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.2
Embodied Energy, MJ/kg 45
31
Embodied Water, L/kg 310
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
57 to 110
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
27 to 70
Strength to Weight: Bending, points 13
24 to 45
Thermal Diffusivity, mm2/s 75
6.1
Thermal Shock Resistance, points 13
27 to 70

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0.75 to 1.0
Chromium (Cr), % 0.6 to 1.0
16 to 18
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
78.2 to 83.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Residuals, % 0 to 0.5
0