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Annealed (OS025) C43500 Brass

OS025 C43500 brass is C43500 brass in the OS025 (annealed to 0.025mm grain size) temper. It has the second lowest strength compared to the other variants of C43500 brass. The graph bars on the material properties cards below compare OS025 C43500 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 16 x 106 psi

Elongation at Break

46 %

Poisson's Ratio

0.32

Rockwell F Hardness

70

Rockwell Superficial 30T Hardness

31

Shear Modulus

42 GPa 6.0 x 106 psi

Shear Strength

250 MPa 36 x 103 psi

Tensile Strength: Ultimate (UTS)

340 MPa 49 x 103 psi

Tensile Strength: Yield (Proof)

130 MPa 20 x 103 psi

Thermal Properties

Latent Heat of Fusion

190 J/g

Maximum Temperature: Mechanical

160 °C 320 °F

Melting Completion (Liquidus)

1000 °C 1840 °F

Melting Onset (Solidus)

970 °C 1770 °F

Specific Heat Capacity

380 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

120 W/m-K 70 BTU/h-ft-°F

Thermal Expansion

19 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

28 % IACS

Electrical Conductivity: Equal Weight (Specific)

30 % IACS

Otherwise Unclassified Properties

Base Metal Price

28 % relative

Density

8.5 g/cm3 530 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)

120 MJ/m3

Resilience: Unit (Modulus of Resilience)

83 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

12 points

Alloy Composition

Copper (Cu) 79 to 83
Zinc (Zn) 15.4 to 20.4
Tin (Sn) 0.6 to 1.2
Lead (Pb) 0 to 0.090
Iron (Fe) 0 to 0.050
Residuals 0 to 0.3

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

Followup Questions