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Automotive Malleable Cast Iron vs. C69400 Brass

Automotive malleable cast iron belongs to the iron alloys classification, while C69400 brass belongs to the copper alloys. There are 27 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 automotive malleable cast iron and the bottom bar is C69400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
110
Elongation at Break, % 1.0 to 10
17
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 70
42
Tensile Strength: Ultimate (UTS), MPa 350 to 720
570
Tensile Strength: Yield (Proof), MPa 220 to 590
270

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1410
920
Melting Onset (Solidus), °C 1370
820
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 41
26
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
27
Density, g/cm3 7.6
8.3
Embodied Carbon, kg CO2/kg material 1.5
2.7
Embodied Energy, MJ/kg 20
44
Embodied Water, L/kg 45
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 30
80
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 950
340
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 13 to 26
19
Strength to Weight: Bending, points 14 to 24
18
Thermal Diffusivity, mm2/s 11
7.7
Thermal Shock Resistance, points 9.9 to 21
20

Alloy Composition

Carbon (C), % 2.2 to 2.9
0
Copper (Cu), % 0
80 to 83
Iron (Fe), % 93.6 to 96.7
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Manganese (Mn), % 0.15 to 1.3
0
Phosphorus (P), % 0.020 to 0.15
0
Silicon (Si), % 0.9 to 1.9
3.5 to 4.5
Sulfur (S), % 0.020 to 0.2
0
Zinc (Zn), % 0
11.5 to 16.5
Residuals, % 0
0 to 0.5