Resources
Strength in numbers
Aluminium Alloy | ASTM & FED-QQ
QQ-A-250/30 T851 Plate
Commercial2219
An alloy developed for elevated temperature strength that has good weldability and resistance to stress corrosion.
Chemical Composition
|
SAE AMS QQ A 250/30 Alloy QQ A 250/30 |
|
|---|---|
| Chemical Element | % Present |
| Aluminium (Al) | balance |
| Magnesium (Mg) | 0.02 max |
| Other (Each) | 0.05 max |
| Zinc (Zn) | 0.1 max |
| Titanium (Ti) | 0.02 - 0.1 |
| Others (Total) | 0.15 max |
| Vanadium (V) | 0.05 - 0.15 |
| Silicon (Si) | 0.2 max |
| Zirconium (Zr) | 0.1 - 0.25 |
| Iron (Fe) | 0.3 max |
| Manganese (Mn) | 0.2 - 0.4 |
| Copper (Cu) | 5.8 - 6.8 |
Temper Types
AMS QQ-A-250/30 Plate is supplied in T851 temper
- T851
Supplied Forms
Alloy AMS QQ-A-250/30 T851 is supplied as Plate
- Plate
Mechanical Properties
These Mechanical Properties apply to Plate in the T851 condition
| Thickness (mm) | Proof Strength (Min) | Tensile Strength (Min) | Elongation % (Min) |
| Over 6.3 up to & incl. 25.4 | 317 | 427 | 8 |
| Over 25.4 up to & incl. 50.8 | 317 | 427 | 7 |
| Over 50.8 up to & incl. 76.2 | 317 | 427 | 6 |
| Over 76.2 up to & incl. 101.6 | 303 | 413 | 5 |
| Over 101.6 up to & incl. 127 | 296 | 406 | 5 |
| Over 127 up to & incl. 152.4 | 289 | 393 | 4 |
