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Automotive Grey Cast Iron vs. C85900 Brass

Automotive grey cast iron belongs to the iron alloys classification, while C85900 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is automotive grey cast iron and the bottom bar is C85900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 280
85
Elastic (Young's, Tensile) Modulus, GPa 180
100
Elongation at Break, % 9.6 to 14
30
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 69 to 70
40
Tensile Strength: Ultimate (UTS), MPa 140 to 290
460
Tensile Strength: Yield (Proof), MPa 94 to 200
190

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
170
Melting Completion (Liquidus), °C 1380 to 1390
830
Melting Onset (Solidus), °C 1340 to 1350
790
Specific Heat Capacity, J/kg-K 490
390
Thermal Conductivity, W/m-K 41 to 43
89
Thermal Expansion, µm/m-K 12 to 14
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
25
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.1
28

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
24
Density, g/cm3 7.5 to 7.6
8.0
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
2.9
Embodied Energy, MJ/kg 21 to 24
49
Embodied Water, L/kg 44 to 51
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
110
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
170
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 5.2 to 11
16
Strength to Weight: Bending, points 8.0 to 13
17
Thermal Diffusivity, mm2/s 11 to 12
29
Thermal Shock Resistance, points 4.2 to 8.6
16