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Extra-Hard (H06) C66900 Brass

H06 C66900 brass is C66900 brass in the H06 (extra hard) temper. The graph bars on the material properties cards below compare H06 C66900 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

120 GPa 17 x 106 psi

Elongation at Break

3.0 %

Poisson's Ratio

0.32

Rockwell B Hardness

90

Rockwell Superficial 30T Hardness

78

Shear Modulus

45 GPa 6.5 x 106 psi

Shear Strength

380 MPa 55 x 103 psi

Tensile Strength: Ultimate (UTS)

660 MPa 95 x 103 psi

Tensile Strength: Yield (Proof)

660 MPa 95 x 103 psi

Thermal Properties

Latent Heat of Fusion

190 J/g

Maximum Temperature: Mechanical

150 °C 300 °F

Melting Completion (Liquidus)

860 °C 1580 °F

Melting Onset (Solidus)

850 °C 1550 °F

Specific Heat Capacity

400 J/kg-K 0.095 BTU/lb-°F

Thermal Expansion

20 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

3.4 % IACS

Electrical Conductivity: Equal Weight (Specific)

3.8 % IACS

Otherwise Unclassified Properties

Base Metal Price

23 % relative

Density

8.2 g/cm3 510 lb/ft3

Embodied Carbon

2.8 kg CO2/kg material

Embodied Energy

46 MJ/kg 20 x 103 BTU/lb

Embodied Water

310 L/kg 37 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

20 MJ/m3

Resilience: Unit (Modulus of Resilience)

1810 kJ/m3

Stiffness to Weight: Axial

8.1 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

22 points

Strength to Weight: Bending

21 points

Thermal Shock Resistance

20 points

Alloy Composition

Copper (Cu)Cu 62.5 to 64.5
Zinc (Zn)Zn 22.5 to 26
Manganese (Mn)Mn 11.5 to 12.5
Iron (Fe)Fe 0 to 0.25
Lead (Pb)Pb 0 to 0.050
Residualsres. 0 to 0.2

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

Followup Questions