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C18100 Copper vs. ASTM A229 Spring Steel

C18100 copper belongs to the copper alloys classification, while ASTM A229 spring steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C18100 copper and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 8.3
14
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 47
72
Shear Strength, MPa 300
1020 to 1140
Tensile Strength: Ultimate (UTS), MPa 510
1690 to 1890
Tensile Strength: Yield (Proof), MPa 460
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 210
250
Maximum Temperature: Mechanical, °C 200
400
Melting Completion (Liquidus), °C 1080
1450
Melting Onset (Solidus), °C 1020
1410
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 320
50
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 81
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 31
1.8
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.4
Embodied Energy, MJ/kg 43
19
Embodied Water, L/kg 310
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 900
3260 to 4080
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 16
60 to 67
Strength to Weight: Bending, points 16
40 to 43
Thermal Diffusivity, mm2/s 94
14
Thermal Shock Resistance, points 18
54 to 60

Alloy Composition

Carbon (C), % 0
0.55 to 0.85
Chromium (Cr), % 0.4 to 1.2
0
Copper (Cu), % 98.7 to 99.49
0
Iron (Fe), % 0
97.5 to 99
Magnesium (Mg), % 0.030 to 0.060
0
Manganese (Mn), % 0
0.3 to 1.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Zirconium (Zr), % 0.080 to 0.2
0
Residuals, % 0 to 0.5
0