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C81400 Copper vs. S44700 Stainless Steel

C81400 copper belongs to the copper alloys classification, while S44700 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is C81400 copper and the bottom bar is S44700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 11
23
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 41
82
Tensile Strength: Ultimate (UTS), MPa 370
600
Tensile Strength: Yield (Proof), MPa 250
450

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 1090
1460
Melting Onset (Solidus), °C 1070
1410
Specific Heat Capacity, J/kg-K 390
480
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 33
18
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.6
Embodied Energy, MJ/kg 45
49
Embodied Water, L/kg 310
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
120
Resilience: Unit (Modulus of Resilience), kJ/m3 260
480
Stiffness to Weight: Axial, points 7.3
15
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
21
Strength to Weight: Bending, points 13
20
Thermal Shock Resistance, points 13
19

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0.6 to 1.0
28 to 30
Copper (Cu), % 98.4 to 99.38
0 to 0.15
Iron (Fe), % 0
64.9 to 68.5
Manganese (Mn), % 0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 0
0 to 0.15
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.2
Sulfur (S), % 0
0 to 0.020
Residuals, % 0 to 0.5
0