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C81400 Copper vs. N08904 Stainless Steel

C81400 copper belongs to the copper alloys classification, while N08904 stainless steel belongs to the iron alloys. There are 29 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 N08904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
200
Elongation at Break, % 11
38
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 69
77
Shear Modulus, GPa 41
79
Tensile Strength: Ultimate (UTS), MPa 370
540
Tensile Strength: Yield (Proof), MPa 250
240

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1090
1440
Melting Onset (Solidus), °C 1070
1390
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 260
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 61
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 33
32
Density, g/cm3 8.9
8.1
Embodied Carbon, kg CO2/kg material 2.8
5.8
Embodied Energy, MJ/kg 45
79
Embodied Water, L/kg 310
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
170
Resilience: Unit (Modulus of Resilience), kJ/m3 260
150
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 11
19
Strength to Weight: Bending, points 13
18
Thermal Diffusivity, mm2/s 75
3.1
Thermal Shock Resistance, points 13
12

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0.6 to 1.0
19 to 23
Copper (Cu), % 98.4 to 99.38
1.0 to 2.0
Iron (Fe), % 0
38.8 to 53
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
23 to 28
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.035
Residuals, % 0 to 0.5
0