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Ductile Cast Iron vs. C69400 Brass

Ductile cast iron belongs to the iron alloys classification, while C69400 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ductile cast iron and the bottom bar is C69400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170 to 180
110
Elongation at Break, % 2.1 to 20
17
Poisson's Ratio 0.28 to 0.31
0.33
Shear Modulus, GPa 64 to 70
42
Shear Strength, MPa 420 to 800
350
Tensile Strength: Ultimate (UTS), MPa 460 to 920
570
Tensile Strength: Yield (Proof), MPa 310 to 670
270

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 290
170
Melting Completion (Liquidus), °C 1160
920
Melting Onset (Solidus), °C 1120
820
Specific Heat Capacity, J/kg-K 490
410
Thermal Conductivity, W/m-K 31 to 36
26
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.4
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
27
Density, g/cm3 7.1 to 7.5
8.3
Embodied Carbon, kg CO2/kg material 1.5
2.7
Embodied Energy, MJ/kg 21
44
Embodied Water, L/kg 43
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
80
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
340
Stiffness to Weight: Axial, points 12 to 14
7.4
Stiffness to Weight: Bending, points 24 to 26
19
Strength to Weight: Axial, points 17 to 35
19
Strength to Weight: Bending, points 18 to 29
18
Thermal Diffusivity, mm2/s 8.9 to 10
7.7
Thermal Shock Resistance, points 17 to 35
20

Alloy Composition

Carbon (C), % 3.0 to 3.5
0
Copper (Cu), % 0
80 to 83
Iron (Fe), % 93.7 to 95.5
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.080
0
Silicon (Si), % 1.5 to 2.8
3.5 to 4.5
Zinc (Zn), % 0
11.5 to 16.5
Residuals, % 0
0 to 0.5