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Full-Hard (H04) C66700 Brass

H04 C66700 brass is C66700 brass in the H04 (full hard) temper. The graph bars on the material properties cards below compare H04 C66700 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

10 %

Poisson's Ratio

0.31

Rockwell B Hardness

84

Rockwell Superficial 30T Hardness

72

Shear Modulus

41 GPa 6.0 x 106 psi

Shear Strength

320 MPa 46 x 103 psi

Tensile Strength: Ultimate (UTS)

540 MPa 78 x 103 psi

Tensile Strength: Yield (Proof)

490 MPa 71 x 103 psi

Thermal Properties

Latent Heat of Fusion

180 J/g

Maximum Temperature: Mechanical

140 °C 290 °F

Melting Completion (Liquidus)

1090 °C 2000 °F

Melting Onset (Solidus)

1050 °C 1920 °F

Specific Heat Capacity

390 J/kg-K 0.092 BTU/lb-°F

Thermal Conductivity

97 W/m-K 56 BTU/h-ft-°F

Thermal Expansion

20 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

17 % IACS

Electrical Conductivity: Equal Weight (Specific)

19 % IACS

Otherwise Unclassified Properties

Base Metal Price

25 % relative

Density

8.2 g/cm3 510 lb/ft3

Embodied Carbon

2.7 kg CO2/kg material

Embodied Energy

45 MJ/kg 19 x 103 BTU/lb

Embodied Water

320 L/kg 38 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

52 MJ/m3

Resilience: Unit (Modulus of Resilience)

1090 kJ/m3

Stiffness to Weight: Axial

7.3 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

18 points

Thermal Diffusivity

30 mm2/s

Thermal Shock Resistance

18 points

Alloy Composition

Copper (Cu)Cu 68.5 to 71.5
Zinc (Zn)Zn 26.3 to 30.7
Manganese (Mn)Mn 0.8 to 1.5
Iron (Fe)Fe 0 to 0.1
Lead (Pb)Pb 0 to 0.070
Residualsres. 0 to 0.5

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

Followup Questions

Further Reading

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993