# AT6-6061 type II Sintered Aluminum

AT6-6061 type II is sintered 6061 aluminum in the T6 temper. To achieve this temper, the metal is solution heat-treated and artificially aged until it meets standard mechanical property requirements.

It has the highest strength and second lowest ductility compared to the other variants of sintered 6061 aluminum.

The graph bars on the material properties cards below compare AT6-6061 type II to: otherwise unclassified 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

Elastic (Young's, Tensile) Modulus

68 *GPa* 9.8 *x 10 ^{6} psi*

Elongation at Break

2.0 *%*

Fatigue Strength

62 *MPa* 9.0 *x 10 ^{3} psi*

Poisson's Ratio

0.33

Shear Modulus

25 *GPa* 3.7 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

210 *MPa* 30 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

190 *MPa* 28 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

400 *J/g*

Maximum Temperature: Mechanical

170 *°C* 340 *°F*

Melting Completion (Liquidus)

640 *°C* 1180 *°F*

Melting Onset (Solidus)

610 *°C* 1130 *°F*

Specific Heat Capacity

900 *J/kg-K* 0.21 *BTU/lb-°F*

Thermal Conductivity

200 *W/m-K* 110 *BTU/h-ft-°F*

Thermal Expansion

23 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

52 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

170 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

9.5 *% relative*

Density

2.7 *g/cm ^{3}* 170

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

150 *MJ/kg* 66 *x 10 ^{3} BTU/lb*

Embodied Water

1180 *L/kg* 140 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

4.0 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

280 *kJ/m ^{3}*

Stiffness to Weight: Axial

14 *points*

Stiffness to Weight: Bending

51 *points*

Strength to Weight: Axial

21 *points*

Strength to Weight: Bending

29 *points*

Thermal Diffusivity

81 *mm ^{2}/s*

Thermal Shock Resistance

9.4 *points*

## Alloy Composition

Al | 96 to 99.4 | |

Mg | 0.4 to 1.2 | |

Si | 0.2 to 0.8 | |

Cu | 0 to 0.5 | |

res. | 0 to 1.5 |

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

## Followup Questions

## Further Reading

ASTM B595: Standard Specification for Sintered Aluminum Structural Parts

Sintering of Advanced Materials: Fundamentals and Processes, Zhigang Zak Fang (editor), 2010

Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984

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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015