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3/4-Hard (H03) C28000 Muntz Metal

H03 C28000 Muntz Metal is C28000 Muntz Metal in the H03 (3/4 hard) temper. The graph bars on the material properties cards below compare H03 C28000 Muntz Metal 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

100 GPa 15 x 106 psi

Poisson's Ratio

0.31

Rockwell B Hardness

69

Shear Modulus

40 GPa 5.8 x 106 psi

Tensile Strength: Ultimate (UTS)

470 MPa 67 x 103 psi

Thermal Properties

Latent Heat of Fusion

170 J/g

Maximum Temperature: Mechanical

120 °C 250 °F

Melting Completion (Liquidus)

900 °C 1660 °F

Melting Onset (Solidus)

900 °C 1650 °F

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

120 W/m-K 71 BTU/h-ft-°F

Thermal Expansion

21 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

28 % IACS

Electrical Conductivity: Equal Weight (Specific)

31 % IACS

Otherwise Unclassified Properties

Base Metal Price

23 % relative

Density

8.0 g/cm3 500 lb/ft3

Embodied Carbon

2.7 kg CO2/kg material

Embodied Energy

46 MJ/kg 20 x 103 BTU/lb

Embodied Water

320 L/kg 38 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

27 to 240 MJ/m3

Resilience: Unit (Modulus of Resilience)

110 to 670 kJ/m3

Stiffness to Weight: Axial

7.2 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

16 points

Strength to Weight: Bending

17 points

Thermal Diffusivity

40 mm2/s

Thermal Shock Resistance

15 points

Alloy Composition

Copper (Cu)Cu 59 to 63
Zinc (Zn)Zn 36.3 to 41
Lead (Pb)Pb 0 to 0.3
Iron (Fe)Fe 0 to 0.070
Residualsres. 0 to 0.3

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