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SAE-AISI 5120 Steel vs. C18700 Copper

SAE-AISI 5120 steel belongs to the iron alloys classification, while C18700 copper belongs to the copper 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 SAE-AISI 5120 steel and the bottom bar is C18700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 16
9.0 to 9.6
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
43
Shear Strength, MPa 310
170 to 190
Tensile Strength: Ultimate (UTS), MPa 500
290 to 330
Tensile Strength: Yield (Proof), MPa 320
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 250
210
Maximum Temperature: Mechanical, °C 420
200
Melting Completion (Liquidus), °C 1460
1080
Melting Onset (Solidus), °C 1420
950
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 47
380
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
98
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
99

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
30
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 1.4
2.6
Embodied Energy, MJ/kg 19
41
Embodied Water, L/kg 49
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
24 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 280
240 to 280
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 18
9.0 to 10
Strength to Weight: Bending, points 18
11 to 12
Thermal Diffusivity, mm2/s 13
110
Thermal Shock Resistance, points 16
10 to 12

Alloy Composition


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Carbon (C), % 0.17 to 0.22
0
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0
98 to 99.2
Iron (Fe), % 97.6 to 98.3
0
Lead (Pb), % 0
0.8 to 1.5
Manganese (Mn), % 0.7 to 0.9
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0
Residuals, % 0
0 to 0.5