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As Hot Rolled (M20) C24000 Brass

M20 C24000 brass is C24000 brass in the M20 (as hot rolled) condition. It has the second lowest strength compared to the other variants of C24000 brass. The graph bars on the material properties cards below compare M20 C24000 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

Poisson's Ratio

0.32

Shear Modulus

42 GPa 6.0 x 106 psi

Tensile Strength: Ultimate (UTS)

320 MPa 46 x 103 psi

Thermal Properties

Latent Heat of Fusion

190 J/g

Maximum Temperature: Mechanical

160 °C 320 °F

Melting Completion (Liquidus)

1000 °C 1830 °F

Melting Onset (Solidus)

970 °C 1770 °F

Solidification (Pattern Maker's) Shrinkage

5.5 %

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

140 W/m-K 81 BTU/h-ft-°F

Thermal Expansion

19 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

32 % IACS

Electrical Conductivity: Equal Weight (Specific)

34 % IACS

Otherwise Unclassified Properties

Base Metal Price

27 % relative

Density

8.5 g/cm3 530 lb/ft3

Embodied Carbon

2.6 kg CO2/kg material

Embodied Energy

43 MJ/kg 19 x 103 BTU/lb

Embodied Water

320 L/kg 38 gal/lb

Common Calculations

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

10 points

Strength to Weight: Bending

12 points

Thermal Diffusivity

43 mm2/s

Thermal Shock Resistance

11 points

Alloy Composition

Copper (Cu)Cu 78.5 to 81.5
Zinc (Zn)Zn 18.2 to 21.5
Iron (Fe)Fe 0 to 0.050
Lead (Pb)Pb 0 to 0.050
Residualsres. 0 to 0.2

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

Followup Questions

Further Reading

ASTM B36: Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar

Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993