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
| Cu | 59 to 63 | |
| Zn | 36.3 to 41 | |
| Pb | 0 to 0.3 | |
| Fe | 0 to 0.070 | |
| res. | 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