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Annealed (OS050) C33000 Brass

OS050 C33000 brass is C33000 brass in the OS050 (annealed to 0.050mm grain size) temper. It has the lowest strength and highest ductility compared to the other variants of C33000 brass. The graph bars on the material properties cards below compare OS050 C33000 brass to: wrought 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

110 GPa 15 x 106 psi

Elongation at Break

60 %

Poisson's Ratio

0.31

Rockwell F Hardness

64

Rockwell Superficial 30T Hardness

26

Shear Modulus

40 GPa 5.9 x 106 psi

Shear Strength

240 MPa 35 x 103 psi

Tensile Strength: Ultimate (UTS)

320 MPa 47 x 103 psi

Tensile Strength: Yield (Proof)

110 MPa 16 x 103 psi

Thermal Properties

Latent Heat of Fusion

180 J/g

Maximum Temperature: Mechanical

130 °C 270 °F

Melting Completion (Liquidus)

940 °C 1720 °F

Melting Onset (Solidus)

900 °C 1660 °F

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

120 W/m-K 67 BTU/h-ft-°F

Thermal Expansion

20 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

26 % IACS

Electrical Conductivity: Equal Weight (Specific)

29 % IACS

Otherwise Unclassified Properties

Base Metal Price

24 % relative

Density

8.2 g/cm3 510 lb/ft3

Embodied Carbon

2.7 kg CO2/kg material

Embodied Energy

45 MJ/kg 19 x 103 BTU/lb

Embodied Water

320 L/kg 38 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

150 MJ/m3

Resilience: Unit (Modulus of Resilience)

60 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

11 points

Strength to Weight: Bending

13 points

Thermal Diffusivity

37 mm2/s

Thermal Shock Resistance

11 points

Alloy Composition

Copper (Cu)Cu 65 to 68
Zinc (Zn)Zn 30.8 to 34.8
Lead (Pb)Pb 0.25 to 0.7
Iron (Fe)Fe 0 to 0.070
Residualsres. 0 to 0.4

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

Followup Questions