Extra-Spring (H10) C34000 Brass
H10 C34000 brass is C34000 brass in the H10 (extra spring) temper. It has the highest strength compared to the other variants of C34000 brass. The graph bars on the material properties cards below compare H10 C34000 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
Poisson's Ratio
0.31
Rockwell B Hardness
91
Rockwell Superficial 30T Hardness
78
Shear Modulus
40 GPa 5.8 x 106 psi
Tensile Strength: Ultimate (UTS)
650 MPa 95 x 103 psi
Thermal Properties
Latent Heat of Fusion
170 J/g
Maximum Temperature: Mechanical
120 °C 260 °F
Melting Completion (Liquidus)
930 °C 1700 °F
Melting Onset (Solidus)
890 °C 1630 °F
Specific Heat Capacity
380 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
120 W/m-K 67 BTU/h-ft-°F
Thermal Expansion
21 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
26 % IACS
Electrical Conductivity: Equal Weight (Specific)
29 % IACS
Otherwise Unclassified Properties
Base Metal Price
24 % relative
Density
8.1 g/cm3 510 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
45 MJ/kg 19 x 103 BTU/lb
Embodied Water
320 L/kg 38 gal/lb
Common Calculations
Stiffness to Weight: Axial
7.1 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
22 points
Strength to Weight: Bending
21 points
Thermal Diffusivity
37 mm2/s
Thermal Shock Resistance
22 points
Alloy Composition
| Cu | 62 to 65 | |
| Zn | 33 to 37.2 | |
| Pb | 0.8 to 1.5 | |
| Fe | 0 to 0.1 | |
| res. | 0 to 0.4 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B121: Standard Specification for Leaded Brass Plate, Sheet, Strip, and Rolled Bar
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001