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C68300 Brass vs. Automotive Malleable Cast Iron

C68300 brass belongs to the copper alloys classification, while automotive malleable cast iron belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C68300 brass and the bottom bar is automotive malleable cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
180
Elongation at Break, % 15
1.0 to 10
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
70
Tensile Strength: Ultimate (UTS), MPa 430
350 to 720
Tensile Strength: Yield (Proof), MPa 260
220 to 590

Thermal Properties

Latent Heat of Fusion, J/g 180
260
Melting Completion (Liquidus), °C 900
1410
Melting Onset (Solidus), °C 890
1370
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 120
41
Thermal Expansion, µm/m-K 20
14

Otherwise Unclassified Properties

Base Metal Price, % relative 23
1.9
Density, g/cm3 8.0
7.6
Embodied Carbon, kg CO2/kg material 2.8
1.5
Embodied Energy, MJ/kg 46
20
Embodied Water, L/kg 340
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 56
6.8 to 30
Resilience: Unit (Modulus of Resilience), kJ/m3 330
130 to 950
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 20
25
Strength to Weight: Axial, points 15
13 to 26
Strength to Weight: Bending, points 16
14 to 24
Thermal Diffusivity, mm2/s 38
11
Thermal Shock Resistance, points 14
9.9 to 21

Alloy Composition

Antimony (Sb), % 0.3 to 1.0
0
Cadmium (Cd), % 0 to 0.010
0
Carbon (C), % 0
2.2 to 2.9
Copper (Cu), % 59 to 63
0
Iron (Fe), % 0
93.6 to 96.7
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0
0.15 to 1.3
Phosphorus (P), % 0
0.020 to 0.15
Silicon (Si), % 0.3 to 1.0
0.9 to 1.9
Sulfur (S), % 0
0.020 to 0.2
Tin (Sn), % 0.050 to 0.2
0
Zinc (Zn), % 34.2 to 40.4
0
Residuals, % 0 to 0.5
0