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Spring-Tempered (H08) C43000 Brass

H08 C43000 brass is C43000 brass in the H08 (spring) temper. It has the second highest strength and second lowest ductility compared to the other variants of C43000 brass. The graph bars on the material properties cards below compare H08 C43000 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

4.0 %

Poisson's Ratio

0.33

Rockwell B Hardness

91

Rockwell Superficial 30T Hardness

77

Shear Modulus

42 GPa 6.0 x 106 psi

Shear Strength

370 MPa 54 x 103 psi

Tensile Strength: Ultimate (UTS)

650 MPa 94 x 103 psi

Tensile Strength: Yield (Proof)

540 MPa 78 x 103 psi

Thermal Properties

Latent Heat of Fusion

190 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

1030 °C 1880 °F

Melting Onset (Solidus)

1000 °C 1830 °F

Specific Heat Capacity

380 J/kg-K 0.091 BTU/lb-°F

Thermal Conductivity

120 W/m-K 69 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

27 % IACS

Electrical Conductivity: Equal Weight (Specific)

28 % IACS

Otherwise Unclassified Properties

Base Metal Price

29 % relative

Density

8.6 g/cm3 540 lb/ft3

Embodied Carbon

2.8 kg CO2/kg material

Embodied Energy

46 MJ/kg 20 x 103 BTU/lb

Embodied Water

330 L/kg 39 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

24 MJ/m3

Resilience: Unit (Modulus of Resilience)

1310 kJ/m3

Stiffness to Weight: Axial

7.1 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

21 points

Strength to Weight: Bending

19 points

Thermal Diffusivity

36 mm2/s

Thermal Shock Resistance

23 points

Alloy Composition

Copper (Cu) 84 to 87
Zinc (Zn) 9.7 to 14.3
Tin (Sn) 1.7 to 2.7
Lead (Pb) 0 to 0.1
Iron (Fe) 0 to 0.050
Residuals 0 to 0.5

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions