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C68800 Brass vs. Grey Cast Iron

C68800 brass belongs to the copper alloys classification, while grey cast iron belongs to the iron alloys. There are 28 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 C68800 brass and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
180
Elongation at Break, % 2.0 to 36
9.6
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
69
Shear Strength, MPa 380 to 510
180 to 610
Tensile Strength: Ultimate (UTS), MPa 570 to 890
160 to 450
Tensile Strength: Yield (Proof), MPa 390 to 790
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 190
280
Melting Completion (Liquidus), °C 960
1380
Melting Onset (Solidus), °C 950
1180
Specific Heat Capacity, J/kg-K 400
490
Thermal Conductivity, W/m-K 40
46
Thermal Expansion, µm/m-K 19
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 20
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 26
1.9
Density, g/cm3 8.2
7.5
Embodied Carbon, kg CO2/kg material 2.8
1.5
Embodied Energy, MJ/kg 48
21
Embodied Water, L/kg 350
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 180
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 710 to 2860
27 to 240
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 19 to 30
5.8 to 17
Strength to Weight: Bending, points 19 to 25
8.7 to 17
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 19 to 30
6.0 to 17

Alloy Composition

Aluminum (Al), % 3.0 to 3.8
0
Carbon (C), % 0
3.1 to 3.4
Cobalt (Co), % 0.25 to 0.55
0
Copper (Cu), % 70.8 to 75.5
0
Iron (Fe), % 0 to 0.2
92.1 to 93.9
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0
0.5 to 0.7
Phosphorus (P), % 0
0 to 0.9
Silicon (Si), % 0
2.5 to 2.8
Sulfur (S), % 0
0 to 0.15
Zinc (Zn), % 21.3 to 24.1
0
Residuals, % 0 to 0.5
0