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Ductile Cast Iron vs. C86700 Bronze

Ductile cast iron belongs to the iron alloys classification, while C86700 bronze belongs to the copper alloys. There are 28 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 ductile cast iron and the bottom bar is C86700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170 to 180
110
Elongation at Break, % 2.1 to 20
17
Poisson's Ratio 0.28 to 0.31
0.31
Shear Modulus, GPa 64 to 70
41
Tensile Strength: Ultimate (UTS), MPa 460 to 920
630
Tensile Strength: Yield (Proof), MPa 310 to 670
250

Thermal Properties

Latent Heat of Fusion, J/g 270
180
Maximum Temperature: Mechanical, °C 290
130
Melting Completion (Liquidus), °C 1160
880
Melting Onset (Solidus), °C 1120
860
Specific Heat Capacity, J/kg-K 490
400
Thermal Conductivity, W/m-K 31 to 36
89
Thermal Expansion, µm/m-K 11
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
17
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.4
19

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
23
Density, g/cm3 7.1 to 7.5
7.9
Embodied Carbon, kg CO2/kg material 1.5
2.9
Embodied Energy, MJ/kg 21
49
Embodied Water, L/kg 43
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
86
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
290
Stiffness to Weight: Axial, points 12 to 14
7.5
Stiffness to Weight: Bending, points 24 to 26
20
Strength to Weight: Axial, points 17 to 35
22
Strength to Weight: Bending, points 18 to 29
21
Thermal Diffusivity, mm2/s 8.9 to 10
28
Thermal Shock Resistance, points 17 to 35
21

Alloy Composition

Aluminum (Al), % 0
1.0 to 3.0
Carbon (C), % 3.0 to 3.5
0
Copper (Cu), % 0
55 to 60
Iron (Fe), % 93.7 to 95.5
1.0 to 3.0
Lead (Pb), % 0
0.5 to 1.5
Manganese (Mn), % 0
1.0 to 3.5
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.080
0
Silicon (Si), % 1.5 to 2.8
0
Tin (Sn), % 0
0 to 1.5
Zinc (Zn), % 0
30 to 38
Residuals, % 0
0 to 1.0