Full-Hard (H04) C47940 Brass
H04 C47940 brass is C47940 brass in the H04 (full hard) temper. It has the highest strength and lowest ductility compared to the other variants of C47940 brass. The graph bars on the material properties cards below compare H04 C47940 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
100 GPa 15 x 106 psi
Elongation at Break
14 %
Poisson's Ratio
0.31
Shear Modulus
40 GPa 5.8 x 106 psi
Shear Strength
310 MPa 45 x 103 psi
Tensile Strength: Ultimate (UTS)
520 MPa 75 x 103 psi
Tensile Strength: Yield (Proof)
390 MPa 57 x 103 psi
Thermal Properties
Latent Heat of Fusion
170 J/g
Maximum Temperature: Mechanical
130 °C 260 °F
Melting Completion (Liquidus)
850 °C 1570 °F
Melting Onset (Solidus)
800 °C 1480 °F
Specific Heat Capacity
380 J/kg-K 0.091 BTU/lb-°F
Thermal Conductivity
110 W/m-K 64 BTU/h-ft-°F
Thermal Expansion
20 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
25 % relative
Density
8.2 g/cm3 510 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
47 MJ/kg 20 x 103 BTU/lb
Embodied Water
330 L/kg 40 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
68 MJ/m3
Resilience: Unit (Modulus of Resilience)
740 kJ/m3
Stiffness to Weight: Axial
7.1 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
17 points
Thermal Diffusivity
36 mm2/s
Thermal Shock Resistance
17 points
Alloy Composition
| Cu | 63 to 66 | |
| Zn | 28.1 to 34.6 | |
| Sn | 1.2 to 2.0 | |
| Pb | 1.0 to 2.0 | |
| Fe | 0.1 to 1.0 | |
| Ni | 0.1 to 0.5 | |
| res. | 0 to 0.4 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B21: Standard Specification for Naval Brass Rod, Bar, and Shapes
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001