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C18400 Copper vs. SAE-AISI 9255 Steel

C18400 copper belongs to the copper alloys classification, while SAE-AISI 9255 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 C18400 copper and the bottom bar is SAE-AISI 9255 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 13 to 50
21
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
72
Shear Strength, MPa 190 to 310
430
Tensile Strength: Ultimate (UTS), MPa 270 to 490
680
Tensile Strength: Yield (Proof), MPa 110 to 480
390

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Maximum Temperature: Mechanical, °C 200
400
Melting Completion (Liquidus), °C 1080
1430
Melting Onset (Solidus), °C 1070
1390
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 320
46
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 81
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 31
2.0
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 2.6
1.5
Embodied Energy, MJ/kg 41
20
Embodied Water, L/kg 310
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63 to 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 980
400
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 8.5 to 15
24
Strength to Weight: Bending, points 10 to 16
22
Thermal Diffusivity, mm2/s 94
13
Thermal Shock Resistance, points 9.6 to 17
21

Alloy Composition

Arsenic (As), % 0 to 0.0050
0
Calcium (Ca), % 0 to 0.0050
0
Carbon (C), % 0
0.51 to 0.59
Chromium (Cr), % 0.4 to 1.2
0
Copper (Cu), % 97.2 to 99.6
0
Iron (Fe), % 0 to 0.15
96.2 to 97
Lithium (Li), % 0 to 0.050
0
Manganese (Mn), % 0
0.7 to 1.0
Phosphorus (P), % 0 to 0.050
0 to 0.035
Silicon (Si), % 0 to 0.1
1.8 to 2.2
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.7
0
Residuals, % 0 to 0.5
0