# As Hot Extruded (M30) C46400 Brass

M30 C46400 brass is C46400 brass in the M30 (as hot extruded) condition. It has the lowest strength compared to the other variants of C46400 brass. The graph bars on the material properties cards below compare M30 C46400 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

34 *%*

Poisson's Ratio

0.31

Shear Modulus

40 *GPa* 5.8 *x 10 ^{6} psi*

Shear Strength

270 *MPa* 39 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

400 *MPa* 58 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

160 *MPa* 23 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

170 *J/g*

Maximum Temperature: Mechanical

120 *°C* 250 *°F*

Melting Completion (Liquidus)

900 *°C* 1650 *°F*

Melting Onset (Solidus)

890 *°C* 1630 *°F*

Specific Heat Capacity

380 *J/kg-K* 0.092 *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*

Calomel Potential

-400 *mV*

Density

8.0 *g/cm ^{3}* 500

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

47 *MJ/kg* 20 *x 10 ^{3} BTU/lb*

Embodied Water

330 *L/kg* 39 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

110 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

120 *kJ/m ^{3}*

Stiffness to Weight: Axial

7.2 *points*

Stiffness to Weight: Bending

20 *points*

Strength to Weight: Axial

14 *points*

Strength to Weight: Bending

15 *points*

Thermal Diffusivity

38 *mm ^{2}/s*

Thermal Shock Resistance

13 *points*

## Alloy Composition

Cu | 59 to 62 | |

Zn | 36.3 to 40.5 | |

Sn | 0.5 to 1.0 | |

Pb | 0 to 0.2 | |

Fe | 0 to 0.1 | |

res. | 0 to 0.4 |

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

## Followup Questions

## Further Reading

ASTM B21: Standard Specification for Naval Brass Rod, Bar, and Shapes

ASTM B124: Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes

ASTM B283: Standard Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)

Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001

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