Spring-Tempered (H08) C24000 Brass
H08 C24000 brass is C24000 brass in the H08 (spring) temper. It has the second highest strength and lowest ductility compared to the other variants of C24000 brass. The graph bars on the material properties cards below compare H08 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
Elongation at Break
3.0 %
Fatigue Strength
170 MPa 24 x 103 psi
Poisson's Ratio
0.32
Rockwell B Hardness
90
Rockwell Superficial 30T Hardness
77
Shear Modulus
42 GPa 6.0 x 106 psi
Shear Strength
330 MPa 48 x 103 psi
Tensile Strength: Ultimate (UTS)
620 MPa 89 x 103 psi
Tensile Strength: Yield (Proof)
450 MPa 65 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
Resilience: Ultimate (Unit Rupture Work)
17 MJ/m3
Resilience: Unit (Modulus of Resilience)
920 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
20 points
Strength to Weight: Bending
19 points
Thermal Diffusivity
43 mm2/s
Thermal Shock Resistance
21 points
Alloy Composition
| Cu | 78.5 to 81.5 | |
| Zn | 18.2 to 21.5 | |
| 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
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