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Grey Cast Iron vs. C31400 Bronze

Grey cast iron belongs to the iron alloys classification, while C31400 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grey cast iron and the bottom bar is C31400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
110
Elongation at Break, % 9.6
6.8 to 29
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 69
42
Shear Strength, MPa 180 to 610
180 to 240
Tensile Strength: Ultimate (UTS), MPa 160 to 450
270 to 420
Tensile Strength: Yield (Proof), MPa 98 to 290
78 to 310

Thermal Properties

Latent Heat of Fusion, J/g 280
200
Melting Completion (Liquidus), °C 1380
1040
Melting Onset (Solidus), °C 1180
1010
Specific Heat Capacity, J/kg-K 490
380
Thermal Conductivity, W/m-K 46
180
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
42
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
43

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
29
Density, g/cm3 7.5
8.8
Embodied Carbon, kg CO2/kg material 1.5
2.6
Embodied Energy, MJ/kg 21
42
Embodied Water, L/kg 44
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 37
26 to 59
Resilience: Unit (Modulus of Resilience), kJ/m3 27 to 240
28 to 420
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 5.8 to 17
8.7 to 13
Strength to Weight: Bending, points 8.7 to 17
11 to 14
Thermal Diffusivity, mm2/s 13
54
Thermal Shock Resistance, points 6.0 to 17
9.6 to 15

Alloy Composition

Carbon (C), % 3.1 to 3.4
0
Copper (Cu), % 0
87.5 to 90.5
Iron (Fe), % 92.1 to 93.9
0 to 0.1
Lead (Pb), % 0
1.3 to 2.5
Manganese (Mn), % 0.5 to 0.7
0
Nickel (Ni), % 0
0 to 0.7
Phosphorus (P), % 0 to 0.9
0
Silicon (Si), % 2.5 to 2.8
0
Sulfur (S), % 0 to 0.15
0
Zinc (Zn), % 0
5.8 to 11.2
Residuals, % 0
0 to 0.4