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C81400 Copper vs. AISI 434 Stainless Steel

C81400 copper belongs to the copper alloys classification, while AISI 434 stainless steel belongs to the iron alloys. There are 29 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 434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
24
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 69
77
Shear Modulus, GPa 41
78
Tensile Strength: Ultimate (UTS), MPa 370
520
Tensile Strength: Yield (Proof), MPa 250
320

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
880
Melting Completion (Liquidus), °C 1090
1510
Melting Onset (Solidus), °C 1070
1430
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
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 61
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 33
9.5
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.4
Embodied Energy, MJ/kg 45
33
Embodied Water, L/kg 310
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
110
Resilience: Unit (Modulus of Resilience), kJ/m3 260
260
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
19
Strength to Weight: Bending, points 13
18
Thermal Diffusivity, mm2/s 75
6.7
Thermal Shock Resistance, points 13
19

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0.6 to 1.0
16 to 18
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
78.6 to 83.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0.75 to 1.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0