MakeItFrom.com
Menu (ESC)

UNS C85800 Leaded Yellow Brass

C85800 brass is a brass formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. The graph bars on the material properties cards below compare C85800 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

Elastic (Young's, Tensile) Modulus

100 GPa 15 x 106 psi

Elongation at Break

15 %

Poisson's Ratio

0.31

Rockwell B Hardness

56

Shear Modulus

40 GPa 5.8 x 106 psi

Tensile Strength: Ultimate (UTS)

380 MPa 55 x 103 psi

Tensile Strength: Yield (Proof)

210 MPa 30 x 103 psi

Thermal Properties

Latent Heat of Fusion

170 J/g

Maximum Temperature: Mechanical

120 °C 250 °F

Melting Completion (Liquidus)

900 °C 1650 °F

Melting Onset (Solidus)

870 °C 1600 °F

Specific Heat Capacity

380 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

84 W/m-K 49 BTU/h-ft-°F

Thermal Expansion

20 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

20 % IACS

Electrical Conductivity: Equal Weight (Specific)

22 % IACS

Otherwise Unclassified Properties

Base Metal Price

24 % relative

Density

8.0 g/cm3 500 lb/ft3

Embodied Carbon

2.8 kg CO2/kg material

Embodied Energy

47 MJ/kg 20 x 103 BTU/lb

Embodied Water

330 L/kg 39 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

48 MJ/m3

Resilience: Unit (Modulus of Resilience)

210 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

13 points

Strength to Weight: Bending

15 points

Thermal Diffusivity

27 mm2/s

Thermal Shock Resistance

13 points

Alloy Composition

Among cast copper alloys, the composition of C85800 brass is notable for including arsenic (As). Arsenic is used to protect the alloy against dezincification.

Copper (Cu) 57 to 69
Zinc (Zn) 31 to 41
Lead (Pb) 0 to 1.5
Tin (Sn) 0 to 1.5
Aluminum (Al) 0 to 0.55
Nickel (Ni) 0 to 0.5
Iron (Fe) 0 to 0.5
Manganese (Mn) 0 to 0.25
Silicon (Si) 0 to 0.25
Sulfur (S) 0 to 0.050
Antimony (Sb) 0 to 0.050
Arsenic (As) 0 to 0.050
Phosphorus (P) 0 to 0.010
Residuals 0 to 1.3

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM B176: Standard Specification for Copper-Alloy Die Castings

ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015