# 359.0-T61 Cast Aluminum

359.0-T61 aluminum is 359.0 aluminum in the T61 temper. To achieve this temper, the metal is solution heat-treated and artificially underaged. The degree of underaging is different from T64 and T65. The graph bars on the material properties cards below compare 359.0-T61 aluminum to: ANSI/AA cast aluminums (top), all aluminum 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

Brinell Hardness

90

Elastic (Young's, Tensile) Modulus

71 *GPa* 10 *x 10 ^{6} psi*

Elongation at Break

4.9 *%*

Fatigue Strength

100 *MPa* 15 *x 10 ^{3} psi*

Poisson's Ratio

0.33

Shear Modulus

27 *GPa* 3.8 *x 10 ^{6} psi*

Shear Strength

220 *MPa* 32 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

340 *MPa* 49 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

250 *MPa* 37 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

530 *J/g*

Maximum Temperature: Mechanical

170 *°C* 340 *°F*

Melting Completion (Liquidus)

600 *°C* 1110 *°F*

Melting Onset (Solidus)

570 *°C* 1060 *°F*

Specific Heat Capacity

910 *J/kg-K* 0.22 *BTU/lb-°F*

Thermal Conductivity

140 *W/m-K* 79 *BTU/h-ft-°F*

Thermal Expansion

21 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

35 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

120 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

9.5 *% relative*

Density

2.6 *g/cm ^{3}* 160

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

150 *MJ/kg* 63 *x 10 ^{3} BTU/lb*

Embodied Water

1090 *L/kg* 130 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

15 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

450 *kJ/m ^{3}*

Stiffness to Weight: Axial

15 *points*

Stiffness to Weight: Bending

54 *points*

Strength to Weight: Axial

37 *points*

Strength to Weight: Bending

42 *points*

Thermal Diffusivity

59 *mm ^{2}/s*

Thermal Shock Resistance

16 *points*

## Alloy Composition

Al | 88.9 to 91 | |

Si | 8.5 to 9.5 | |

Mg | 0.5 to 0.7 | |

Fe | 0 to 0.2 | |

Ti | 0 to 0.2 | |

Cu | 0 to 0.2 | |

Mn | 0 to 0.1 | |

Zn | 0 to 0.1 | |

res. | 0 to 0.15 |

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

## Followup Questions

## Further Reading

ASTM B108: Standard Specification for Aluminum-Alloy Permanent Mold Castings

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