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C81400 Copper vs. AISI 439 Stainless Steel

C81400 copper belongs to the copper alloys classification, while AISI 439 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C81400 copper and the bottom bar is AISI 439 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
23
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 69
78
Shear Modulus, GPa 41
77
Tensile Strength: Ultimate (UTS), MPa 370
490
Tensile Strength: Yield (Proof), MPa 250
250

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
890
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
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 61
3.4

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
2.3
Embodied Energy, MJ/kg 45
34
Embodied Water, L/kg 310
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
95
Resilience: Unit (Modulus of Resilience), kJ/m3 260
160
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
18
Strength to Weight: Bending, points 13
18
Thermal Diffusivity, mm2/s 75
6.7
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.6 to 1.0
17 to 19
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
77.1 to 82.8
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.1
Residuals, % 0 to 0.5
0