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SAE-AISI 81B45 Steel vs. C65100 Bronze

SAE-AISI 81B45 steel belongs to the iron alloys classification, while C65100 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 81B45 steel and the bottom bar is C65100 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 12 to 24
2.4 to 50
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
43
Shear Strength, MPa 340 to 400
200 to 350
Tensile Strength: Ultimate (UTS), MPa 540 to 670
280 to 560
Tensile Strength: Yield (Proof), MPa 350 to 560
95 to 440

Thermal Properties

Latent Heat of Fusion, J/g 250
230
Maximum Temperature: Mechanical, °C 410
200
Melting Completion (Liquidus), °C 1460
1060
Melting Onset (Solidus), °C 1420
1030
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 40
57
Thermal Expansion, µm/m-K 12
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
12
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
30
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 1.5
2.6
Embodied Energy, MJ/kg 20
41
Embodied Water, L/kg 49
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 110
12 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 320 to 840
39 to 820
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 19 to 24
8.7 to 18
Strength to Weight: Bending, points 19 to 22
11 to 17
Thermal Diffusivity, mm2/s 11
16
Thermal Shock Resistance, points 17 to 21
9.5 to 19

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.35 to 0.55
0
Copper (Cu), % 0
94.5 to 99.2
Iron (Fe), % 97 to 98
0 to 0.8
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.75 to 1.0
0 to 0.7
Molybdenum (Mo), % 0.080 to 0.15
0
Nickel (Ni), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0.8 to 2.0
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.5