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SAE-AISI 8645 Steel vs. C64700 Bronze

SAE-AISI 8645 steel belongs to the iron alloys classification, while C64700 bronze 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 8645 steel and the bottom bar is C64700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 12 to 23
9.0
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
44
Shear Strength, MPa 380 to 400
390
Tensile Strength: Ultimate (UTS), MPa 600 to 670
660
Tensile Strength: Yield (Proof), MPa 390 to 560
560

Thermal Properties

Latent Heat of Fusion, J/g 250
220
Maximum Temperature: Mechanical, °C 410
200
Melting Completion (Liquidus), °C 1460
1090
Melting Onset (Solidus), °C 1420
1030
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 39
210
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
38
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
38

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
31
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 1.5
2.7
Embodied Energy, MJ/kg 20
43
Embodied Water, L/kg 50
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
57
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 840
1370
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 21 to 24
21
Strength to Weight: Bending, points 20 to 22
19
Thermal Diffusivity, mm2/s 10
59
Thermal Shock Resistance, points 18 to 20
24

Alloy Composition

Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0
95.8 to 98
Iron (Fe), % 96.5 to 97.7
0 to 0.1
Lead (Pb), % 0
0 to 0.1
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.4 to 0.7
1.6 to 2.2
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0.4 to 0.8
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.5