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SAE-AISI 81B45 Steel vs. C82800 Copper

SAE-AISI 81B45 steel belongs to the iron alloys classification, while C82800 copper belongs to the copper alloys. There are 27 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 SAE-AISI 81B45 steel and the bottom bar is C82800 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 12 to 24
1.0 to 20
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
46
Tensile Strength: Ultimate (UTS), MPa 540 to 670
670 to 1140
Tensile Strength: Yield (Proof), MPa 350 to 560
380 to 1000

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Maximum Temperature: Mechanical, °C 410
310
Melting Completion (Liquidus), °C 1460
930
Melting Onset (Solidus), °C 1420
890
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 40
120
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
18
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
19

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 1.5
12
Embodied Energy, MJ/kg 20
190
Embodied Water, L/kg 49
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 110
11 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 840
590 to 4080
Stiffness to Weight: Axial, points 13
7.8
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 19 to 24
21 to 36
Strength to Weight: Bending, points 19 to 22
20 to 28
Thermal Diffusivity, mm2/s 11
36
Thermal Shock Resistance, points 17 to 21
23 to 39

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Beryllium (Be), % 0
2.5 to 2.9
Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.35 to 0.55
0 to 0.1
Cobalt (Co), % 0
0.15 to 0.7
Copper (Cu), % 0
94.6 to 97.2
Iron (Fe), % 97 to 98
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.080 to 0.15
0
Nickel (Ni), % 0.2 to 0.4
0 to 0.2
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0.2 to 0.35
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.12
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5