# Spring-Tempered (H08) C35300 Brass

H08 C35300 brass is C35300 brass in the H08 (spring) temper. It has the second highest strength compared to the other variants of C35300 brass. The graph bars on the material properties cards below compare H08 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*

Poisson's Ratio

0.31

Rockwell B Hardness

90

Rockwell Superficial 30T Hardness

77

Shear Modulus

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

Tensile Strength: Ultimate (UTS)

630 *MPa* 91 *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

Stiffness to Weight: Axial

7.1 *points*

Stiffness to Weight: Bending

19 *points*

Strength to Weight: Axial

21 *points*

Strength to Weight: Bending

20 *points*

Thermal Diffusivity

38 *mm ^{2}/s*

Thermal Shock Resistance

21 *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