Full-Hard (H04) C23400 Brass
H04 C23400 brass is C23400 brass in the H04 (full hard) temper. The graph bars on the material properties cards below compare H04 C23400 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
7.5 %
Poisson's Ratio
0.32
Rockwell B Hardness
80
Rockwell Superficial 30T Hardness
71
Shear Modulus
42 GPa 6.1 x 106 psi
Shear Strength
290 MPa 43 x 103 psi
Tensile Strength: Ultimate (UTS)
500 MPa 73 x 103 psi
Tensile Strength: Yield (Proof)
430 MPa 62 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
160 °C 330 °F
Melting Completion (Liquidus)
970 °C 1780 °F
Melting Onset (Solidus)
930 °C 1700 °F
Specific Heat Capacity
390 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
120 W/m-K 68 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
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
Resilience: Ultimate (Unit Rupture Work)
36 MJ/m3
Resilience: Unit (Modulus of Resilience)
830 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
16 points
Strength to Weight: Bending
16 points
Thermal Diffusivity
36 mm2/s
Thermal Shock Resistance
17 points
Alloy Composition
| Cu | 81 to 84 | |
| Zn | 15.7 to 19 | |
| Fe | 0 to 0.050 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.2 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B134: Standard Specification for Brass Wire
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015