UNS C83300 Leaded Red Brass
C83300 brass is a brass formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. It has a fairly high base cost among cast brasses. In addition, it has the highest melting temperature and a very high ductility.
The graph bars on the material properties cards below compare C83300 brass to: cast brasses (top), all copper alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Brinell Hardness
35
Elastic (Young's, Tensile) Modulus
110 GPa 16 x 106 psi
Elongation at Break
35 %
Poisson's Ratio
0.34
Shear Modulus
42 GPa 6.1 x 106 psi
Tensile Strength: Ultimate (UTS)
220 MPa 32 x 103 psi
Tensile Strength: Yield (Proof)
69 MPa 10 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
180 °C 360 °F
Melting Completion (Liquidus)
1060 °C 1940 °F
Melting Onset (Solidus)
1030 °C 1890 °F
Specific Heat Capacity
380 J/kg-K 0.090 BTU/lb-°F
Thermal Conductivity
160 W/m-K 92 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
32 % IACS
Electrical Conductivity: Equal Weight (Specific)
33 % IACS
Otherwise Unclassified Properties
Base Metal Price
30 % relative
Density
8.8 g/cm3 550 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
44 MJ/kg 19 x 103 BTU/lb
Embodied Water
320 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
60 MJ/m3
Resilience: Unit (Modulus of Resilience)
21 kJ/m3
Stiffness to Weight: Axial
7.0 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
6.9 points
Strength to Weight: Bending
9.2 points
Thermal Diffusivity
48 mm2/s
Thermal Shock Resistance
7.9 points
Alloy Composition
Among cast copper alloys, the composition of C83300 brass is notable for containing a comparatively high amount of lead (Pb). Lead is used to improve machinability and bearing properties, at the cost of toxicity. It also adds pressure tightness to castings.
| Cu | 92 to 94 | |
| Zn | 2.0 to 6.0 | |
| Sn | 1.0 to 2.0 | |
| Pb | 1.0 to 2.0 | |
| res. | 0 to 0.7 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001