# Full-Hard (H04) C35300 Brass

H04 C35300 brass is C35300 brass in the H04 (full hard) temper. The graph bars on the material properties cards below compare H04 C35300 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 10 ^{6} psi*

Elongation at Break

12 *%*

Poisson's Ratio

0.31

Rockwell B Hardness

80

Rockwell Superficial 30T Hardness

71

Shear Modulus

39 *GPa* 5.7 *x 10 ^{6} psi*

Shear Strength

300 *MPa* 44 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

510 *MPa* 73 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

300 *MPa* 43 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

170 *J/g*

Maximum Temperature: Mechanical

120 *°C* 250 *°F*

Melting Completion (Liquidus)

910 *°C* 1670 *°F*

Melting Onset (Solidus)

890 *°C* 1630 *°F*

Specific Heat Capacity

380 *J/kg-K* 0.091 *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

23 *% relative*

Density

8.1 *g/cm ^{3}* 510

*lb/ft*

^{3}Embodied Carbon

2.6 *kg CO _{2}/kg material*

Embodied Energy

45 *MJ/kg* 19 *x 10 ^{3} BTU/lb*

Embodied Water

320 *L/kg* 38 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

50 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

430 *kJ/m ^{3}*

Stiffness to Weight: Axial

7.1 *points*

Stiffness to Weight: Bending

19 *points*

Strength to Weight: Axial

17 *points*

Strength to Weight: Bending

17 *points*

Thermal Diffusivity

38 *mm ^{2}/s*

Thermal Shock Resistance

17 *points*

## Alloy Composition

Cu | 60 to 63 | |

Zn | 33.9 to 38.5 | |

Pb | 1.5 to 2.5 | |

Fe | 0 to 0.1 | |

res. | 0 to 0.5 |

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