Aluminium, AMS
AMS 4342 T74511 Bar & Extrusion
High strength aerospace aluminium alloy with good resistance to stress-corrosion cracking.
Used in aircraft structural parts, aluminium alloy AMS 4342-7050 is an aerospace grade of aluminium combining high strength, stress corrosion cracking resistance and toughness.
It is particularly suited for heavy plate applications (3″ to 6″ thick) due to its lower quench sensitivity and retention of strength in thicker sections.
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4342 T74511 Aluminium Related Specifications
| Tizim / Standart | Davlat / mintaqa | Grade / Designation / Note |
| Ikki nuqtali | AQSh | 4342-T74511 – non-standard / proprietary aluminium designation |
| Ingliz / Nemis | Yevropa | No standard EN AW grade published as “4342” in T74511 temper |
| Birlashgan Millatlar Tashkiloti | Xalqaro | No official UNS aluminium number assigned for 4342-T74511 |
| GB / JIS / BS | China / Japan / UK | No widely recognised aluminium equivalents under these systems |
Xususiyatlari
Kimyoviy tarkib
Alloy 4342
SAE AMS 4342
| Kimyoviy element | % Hozir |
| Silikon (Si) | 0.00 - 0.12 |
| Temir (Fe) | 0.00 - 0.15 |
| Mis (Cu) | 2.00 - 2.60 |
| Marganets (Mn) | 0.00 - 0.10 |
| Magniy (Mg) | 1.90 - 2.60 |
| Xrom (Cr) | 0.00 - 0.04 |
| Rux (Zn) | 5.70 - 6.70 |
| Zirconium (Zr) | 0.08 - 0.15 |
| Titan (Ti) | 0.00 - 0.06 |
| Boshqa (har biri) | 0.00 - 0.05 |
| Boshqalar (Jami) | 0.00 - 0.15 |
| Aluminiy (Al) | Muvozanat |
Mexanik xususiyatlari
Bar
SAE AMS 4342
| Mexanik xususiyat | Qiymat |
| Dalil stress | 434 Min MPa |
| Cho'zilish mustahkamligi | 503 Min MPa |
| Cho'zilish A50 mm | 6 Min % |
Ilovalar
- Aircraft structural parts
- Fuselage frames
- Bulkheads
- Wing skins
Xususiyatlari
- Yuqori mustahkamlik
- Good resistance to exfoliation and stress cracking
- Good fracture toughness & fatigue resistance
