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C68800 Brass vs. Austempered Cast Iron

C68800 brass belongs to the copper alloys classification, while austempered cast iron belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C68800 brass and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
180
Elongation at Break, % 2.0 to 36
1.1 to 13
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
62 to 69
Tensile Strength: Ultimate (UTS), MPa 570 to 890
860 to 1800
Tensile Strength: Yield (Proof), MPa 390 to 790
560 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 190
280
Melting Completion (Liquidus), °C 960
1380
Melting Onset (Solidus), °C 950
1340
Specific Heat Capacity, J/kg-K 400
490
Thermal Conductivity, W/m-K 40
42
Thermal Expansion, µm/m-K 19
13

Otherwise Unclassified Properties

Base Metal Price, % relative 26
2.9
Density, g/cm3 8.2
7.5
Embodied Carbon, kg CO2/kg material 2.8
1.8
Embodied Energy, MJ/kg 48
25
Embodied Water, L/kg 350
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 180
19 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 710 to 2860
880 to 3970
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 19 to 30
32 to 66
Strength to Weight: Bending, points 19 to 25
27 to 44
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 19 to 30
25 to 53

Alloy Composition

Aluminum (Al), % 3.0 to 3.8
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Carbon (C), % 0
3.4 to 3.8
Chromium (Cr), % 0
0 to 0.1
Cobalt (Co), % 0.25 to 0.55
0
Copper (Cu), % 70.8 to 75.5
0 to 0.8
Iron (Fe), % 0 to 0.2
89.6 to 94
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0
0.3 to 0.4
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0
2.3 to 2.7
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0
0 to 0.020
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 21.3 to 24.1
0
Residuals, % 0 to 0.5
0