# 7003-T6 Aluminum

7003-T6 aluminum is 7003 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. The graph bars on the material properties cards below compare 7003-T6 aluminum to: 7000-series alloys (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

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

Elongation at Break

11 *%*

Fatigue Strength

130 *MPa* 19 *x 10 ^{3} psi*

Poisson's Ratio

0.32

Shear Modulus

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

Shear Strength

230 *MPa* 34 *x 10 ^{3} psi*

Tensile Strength: Ultimate (UTS)

390 *MPa* 56 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

310 *MPa* 45 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

380 *J/g*

Maximum Temperature: Mechanical

200 *°C* 400 *°F*

Melting Completion (Liquidus)

630 *°C* 1170 *°F*

Melting Onset (Solidus)

510 *°C* 960 *°F*

Specific Heat Capacity

870 *J/kg-K* 0.21 *BTU/lb-°F*

Thermal Conductivity

150 *W/m-K* 87 *BTU/h-ft-°F*

Thermal Expansion

24 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

36 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

110 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

9.5 *% relative*

Density

2.9 *g/cm ^{3}* 180

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

150 *MJ/kg* 65 *x 10 ^{3} BTU/lb*

Embodied Water

1140 *L/kg* 140 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

41 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

710 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

47 *points*

Strength to Weight: Axial

37 *points*

Strength to Weight: Bending

40 *points*

Thermal Diffusivity

59 *mm ^{2}/s*

Thermal Shock Resistance

17 *points*

## Alloy Composition

Al | 90.6 to 94.5 | |

Zn | 5.0 to 6.5 | |

Mg | 0.5 to 1.0 | |

Fe | 0 to 0.35 | |

Mn | 0 to 0.3 | |

Si | 0 to 0.3 | |

Zr | 0.050 to 0.25 | |

Cr | 0 to 0.2 | |

Ti | 0 to 0.2 | |

Cu | 0 to 0.2 | |

res. | 0 to 0.15 |

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

## Followup Questions

## Further Reading

Handbook of Aluminum Bonding Technology and Data, J. D. Minford, 1993

Handbook of Aluminum vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003

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

EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties

EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products