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Automotive Grey Cast Iron vs. C47940 Brass

Automotive grey cast iron belongs to the iron alloys classification, while C47940 brass belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is automotive grey cast iron and the bottom bar is C47940 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
100
Elongation at Break, % 9.6 to 14
14 to 34
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 69 to 70
40
Tensile Strength: Ultimate (UTS), MPa 140 to 290
380 to 520
Tensile Strength: Yield (Proof), MPa 94 to 200
160 to 390

Thermal Properties

Latent Heat of Fusion, J/g 260 to 280
170
Melting Completion (Liquidus), °C 1380 to 1390
850
Melting Onset (Solidus), °C 1340 to 1350
800
Specific Heat Capacity, J/kg-K 490
380
Thermal Conductivity, W/m-K 41 to 43
110
Thermal Expansion, µm/m-K 12 to 14
20

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9 to 3.0
25
Density, g/cm3 7.5 to 7.6
8.2
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
2.8
Embodied Energy, MJ/kg 21 to 24
47
Embodied Water, L/kg 44 to 51
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 25
68 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 25 to 110
120 to 740
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 5.2 to 11
13 to 17
Strength to Weight: Bending, points 8.0 to 13
14 to 17
Thermal Diffusivity, mm2/s 11 to 12
36
Thermal Shock Resistance, points 4.2 to 8.6
13 to 17