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C81400 Copper vs. AISI 304 Stainless Steel

C81400 copper belongs to the copper alloys classification, while AISI 304 stainless steel belongs to the iron alloys. There are 28 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 304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
8.0 to 43
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 41
77
Tensile Strength: Ultimate (UTS), MPa 370
580 to 1180
Tensile Strength: Yield (Proof), MPa 250
230 to 860

Thermal Properties

Latent Heat of Fusion, J/g 210
290
Maximum Temperature: Mechanical, °C 200
710
Melting Completion (Liquidus), °C 1090
1450
Melting Onset (Solidus), °C 1070
1400
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 260
16
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 61
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 33
15
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 45
43
Embodied Water, L/kg 310
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
86 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 260
140 to 1870
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
21 to 42
Strength to Weight: Bending, points 13
20 to 32
Thermal Diffusivity, mm2/s 75
4.2
Thermal Shock Resistance, points 13
12 to 25

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0.6 to 1.0
18 to 20
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
66.5 to 74
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
8.0 to 10.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0