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SAE-AISI 4145 Steel vs. C14700 Copper

SAE-AISI 4145 steel belongs to the iron alloys classification, while C14700 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4145 steel and the bottom bar is C14700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 16
9.1 to 35
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
43
Shear Strength, MPa 360
160 to 190
Tensile Strength: Ultimate (UTS), MPa 580
240 to 320
Tensile Strength: Yield (Proof), MPa 360
85 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
1070
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 42
370
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
95
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
96

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
30
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 1.5
2.6
Embodied Energy, MJ/kg 20
41
Embodied Water, L/kg 51
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
25 to 65
Resilience: Unit (Modulus of Resilience), kJ/m3 350
31 to 280
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 21
7.3 to 10
Strength to Weight: Bending, points 20
9.5 to 12
Thermal Diffusivity, mm2/s 11
110
Thermal Shock Resistance, points 17
8.4 to 12

Alloy Composition

Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0
99.395 to 99.798
Iron (Fe), % 96.7 to 97.7
0
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.035
0.0020 to 0.0050
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0.2 to 0.5
Residuals, % 0
0 to 0.1