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Automotive Grey Cast Iron vs. C68300 Brass

Automotive grey cast iron belongs to the iron alloys classification, while C68300 brass belongs to the copper 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 automotive grey cast iron and the bottom bar is C68300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
100
Elongation at Break, % 9.6 to 14
15
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 69 to 70
40
Tensile Strength: Ultimate (UTS), MPa 140 to 290
430
Tensile Strength: Yield (Proof), MPa 94 to 200
260

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
180
Melting Completion (Liquidus), °C 1380 to 1390
900
Melting Onset (Solidus), °C 1340 to 1350
890
Specific Heat Capacity, J/kg-K 490
390
Thermal Conductivity, W/m-K 41 to 43
120
Thermal Expansion, µm/m-K 12 to 14
20

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
23
Density, g/cm3 7.5 to 7.6
8.0
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
2.8
Embodied Energy, MJ/kg 21 to 24
46
Embodied Water, L/kg 44 to 51
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
56
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
330
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 5.2 to 11
15
Strength to Weight: Bending, points 8.0 to 13
16
Thermal Diffusivity, mm2/s 11 to 12
38
Thermal Shock Resistance, points 4.2 to 8.6
14