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C81400 Copper vs. ASTM A227 Spring Steel

C81400 copper belongs to the copper alloys classification, while ASTM A227 spring steel belongs to the iron alloys. There are 27 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 ASTM A227 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 11
12
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 41
72
Tensile Strength: Ultimate (UTS), MPa 370
1720 to 2220
Tensile Strength: Yield (Proof), MPa 250
1430 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 210
250
Maximum Temperature: Mechanical, °C 200
400
Melting Completion (Liquidus), °C 1090
1450
Melting Onset (Solidus), °C 1070
1410
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 260
52
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 61
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 33
1.8
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.4
Embodied Energy, MJ/kg 45
19
Embodied Water, L/kg 310
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
200 to 260
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 11
61 to 79
Strength to Weight: Bending, points 13
41 to 48
Thermal Diffusivity, mm2/s 75
14
Thermal Shock Resistance, points 13
55 to 71

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0.45 to 0.85
Chromium (Cr), % 0.6 to 1.0
0
Copper (Cu), % 98.4 to 99.38
0
Iron (Fe), % 0
97.4 to 99.1
Manganese (Mn), % 0
0.3 to 1.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Residuals, % 0 to 0.5
0