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Ductile Cast Iron vs. C21000 Brass

Ductile cast iron belongs to the iron alloys classification, while C21000 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ductile cast iron and the bottom bar is C21000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170 to 180
110
Elongation at Break, % 2.1 to 20
2.9 to 50
Poisson's Ratio 0.28 to 0.31
0.34
Shear Modulus, GPa 64 to 70
43
Shear Strength, MPa 420 to 800
180 to 280
Tensile Strength: Ultimate (UTS), MPa 460 to 920
240 to 450
Tensile Strength: Yield (Proof), MPa 310 to 670
69 to 440

Thermal Properties

Latent Heat of Fusion, J/g 270
200
Maximum Temperature: Mechanical, °C 290
190
Melting Completion (Liquidus), °C 1160
1070
Melting Onset (Solidus), °C 1120
1050
Specific Heat Capacity, J/kg-K 490
390
Thermal Conductivity, W/m-K 31 to 36
230
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
56
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8 to 9.4
57

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
30
Density, g/cm3 7.1 to 7.5
8.8
Embodied Carbon, kg CO2/kg material 1.5
2.6
Embodied Energy, MJ/kg 21
42
Embodied Water, L/kg 43
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
21 to 830
Stiffness to Weight: Axial, points 12 to 14
7.2
Stiffness to Weight: Bending, points 24 to 26
18
Strength to Weight: Axial, points 17 to 35
7.4 to 14
Strength to Weight: Bending, points 18 to 29
9.6 to 15
Thermal Diffusivity, mm2/s 8.9 to 10
69
Thermal Shock Resistance, points 17 to 35
8.1 to 15

Alloy Composition

Carbon (C), % 3.0 to 3.5
0
Copper (Cu), % 0
94 to 96
Iron (Fe), % 93.7 to 95.5
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.080
0
Silicon (Si), % 1.5 to 2.8
0
Zinc (Zn), % 0
3.7 to 6.0
Residuals, % 0
0 to 0.2

Comparable Variants