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C18700 Copper vs. SAE-AISI 1340 Steel

C18700 copper belongs to the copper alloys classification, while SAE-AISI 1340 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C18700 copper and the bottom bar is SAE-AISI 1340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 9.0 to 9.6
11 to 23
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
72
Shear Strength, MPa 170 to 190
340 to 440
Tensile Strength: Ultimate (UTS), MPa 290 to 330
540 to 730
Tensile Strength: Yield (Proof), MPa 230 to 250
300 to 620

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 950
1410
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 380
51
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 99
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
1.9
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.4
Embodied Energy, MJ/kg 41
19
Embodied Water, L/kg 310
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
78 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
240 to 1040
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 9.0 to 10
19 to 26
Strength to Weight: Bending, points 11 to 12
19 to 23
Thermal Diffusivity, mm2/s 110
14
Thermal Shock Resistance, points 10 to 12
17 to 23

Alloy Composition

Carbon (C), % 0
0.38 to 0.43
Copper (Cu), % 98 to 99.2
0
Iron (Fe), % 0
97.2 to 97.9
Lead (Pb), % 0.8 to 1.5
0
Manganese (Mn), % 0
1.6 to 1.9
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Residuals, % 0 to 0.5
0