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CR018A Copper vs. SAE-AISI 4145 Steel

CR018A copper belongs to the copper alloys classification, while SAE-AISI 4145 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is CR018A copper and the bottom bar is SAE-AISI 4145 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 15
16
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
73
Tensile Strength: Ultimate (UTS), MPa 220
580
Tensile Strength: Yield (Proof), MPa 130
360

Thermal Properties

Latent Heat of Fusion, J/g 210
250
Maximum Temperature: Mechanical, °C 200
420
Melting Completion (Liquidus), °C 1090
1460
Melting Onset (Solidus), °C 1040
1420
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 390
42
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 100
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 33
2.4
Density, g/cm3 9.0
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.5
Embodied Energy, MJ/kg 42
20
Embodied Water, L/kg 360
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
80
Resilience: Unit (Modulus of Resilience), kJ/m3 76
350
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 6.8
21
Strength to Weight: Bending, points 9.0
20
Thermal Diffusivity, mm2/s 110
11
Thermal Shock Resistance, points 7.8
17

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
0.43 to 0.48
Chromium (Cr), % 0
0.8 to 1.1
Copper (Cu), % 99.914 to 99.94
0
Iron (Fe), % 0
96.7 to 97.7
Manganese (Mn), % 0
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Silver (Ag), % 0.060 to 0.080
0
Sulfur (S), % 0
0 to 0.040