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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.

Copper (Cu) 92 to 94
Zinc (Zn) 2.0 to 6.0
Tin (Sn) 1.0 to 2.0
Lead (Pb) 1.0 to 2.0
Residuals 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