Aluminium, AMS
AMS 4342 T74511 Bar & Extrusion
응력 부식 균열에 대한 저항성이 우수한 고강도 항공우주 알루미늄 합금.
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
| System / Standard | Country / Region | Grade / Designation / Note |
| AA | USA | 4342-T74511 – non-standard / proprietary aluminium designation |
| EN / DIN | Europe | No standard EN AW grade published as “4342” in T74511 temper |
| UNS | International | No official UNS aluminium number assigned for 4342-T74511 |
| GB / JIS / BS | China / Japan / UK | No widely recognised aluminium equivalents under these systems |
Properties
화학 성분
Alloy 4342
SAE AMS 4342
| Chemical Element | % Present |
| Silicon (Si) | 0.00 - 0.12 |
| Iron (Fe) | 0.00 - 0.15 |
| 구리(Cu) | 2.00 - 2.60 |
| 망간(Mn) | 0.00 - 0.10 |
| Magnesium (Mg) | 1.90 - 2.60 |
| 크롬(Cr) | 0.00 - 0.04 |
| Zinc (Zn) | 5.70 - 6.70 |
| Zirconium (Zr) | 0.08 - 0.15 |
| 티타늄(Ti) | 0.00 - 0.06 |
| Other (Each) | 0.00 - 0.05 |
| Others (Total) | 0.00 - 0.15 |
| Aluminium (Al) | Balance |
기계적 특성
Bar
SAE AMS 4342
| Mechanical Property | 가치 |
| Proof Stress | 434 Min MPa |
| Tensile Strength | 503 Min MPa |
| Elongation A50 mm | 6 Min % |
애플리케이션
- Aircraft structural parts
- Fuselage frames
- Bulkheads
- Wing skins
Characteristics
- High strength
- Good resistance to exfoliation and stress cracking
- Good fracture toughness & fatigue resistance
