Metal
AA6008-T7 hollow extrusion, patent example A1 (patent overheat-and-cool route)
Measured tensile and axial-crush reference for exact AA6008-T7 hollow-profile example A1: regular folds; reported maximum crack length below 5 mm.
Properties
Mechanical
| Property | Value | Unit |
|---|---|---|
| Ultimate tensile strength | 301.0 | MPa |
| Tensile yield strength | 288.0 | MPa |
| Elongation | 14.7 | % |
| Axial crush displacement | 125.0 | mm |
| Axial crush displacement speed | 320.0 | mm/min |
| Reported crush distance, exclusive lower bound | 100.0 | mm |
| Maximum observed crack length, exclusive upper bound | 5.0 | mm |
Composition
| Property | Value | Unit |
|---|---|---|
| Silicon mass fraction | 0.6 | wt% |
| Magnesium mass fraction | 0.53 | wt% |
| Manganese mass fraction | 0.08 | wt% |
| Iron mass fraction | 0.24 | wt% |
| Copper mass fraction | 0.14 | wt% |
| Chromium mass fraction | 0.009 | wt% |
| Zinc mass fraction | 0.03 | wt% |
| Titanium mass fraction | 0.024 | wt% |
| Vanadium mass fraction | 0.071 | wt% |
Units
Condition
- Condition
- AA6008-T7 patent-example hollow profile A1
- Temper
- T7
- Heat treatment
- homogenize near 575 degC; heat near 575 degC; water-spray cool to Td near 430 degC while keeping the billet surface near or above 350 degC; extrude a few tens of seconds later at surface exit temperature above 500 and below 580 degC; water quench to room temperature; stretch 1%; natural age 48 h at ambient temperature; artificial age 7 h at 190 degC to T7
- Product form
- mono-chamber rectangular hollow extruded profile
- Thickness / diameter range
- approximately 40 x 55 mm section; wall thickness close to 2.5 mm
- Test direction
- tensile specimens machined near crash specimens; orientation not stated
- Processing route
- homogenize near 575 degC; heat near 575 degC; water-spray cool to Td near 430 degC while keeping the billet surface near or above 350 degC; extrude a few tens of seconds later at surface exit temperature above 500 and below 580 degC; water quench to room temperature; stretch 1%; natural age 48 h at ambient temperature; artificial age 7 h at 190 degC to T7
- Temperature range
- The example does not state tensile- or crush-test temperature; no temperature extrapolation is allowed.
- Notes
- Measured values for one published AA6008 patent-example profile (A1) and its specific processing route. The source supplies no heat count, specimen count, dispersion or measurement uncertainty. These are not current EN minima, population allowables, a supplier certificate, or evidence that implementing the patented process is permitted. Aluminium is reported only as the composition remainder and is not assigned a calculated percentage.
Standards
No material standards linked.
Record status
- Category
- Metal
- Unit system
- Common SI