Aluminium, ASTM & FED-QQ
QQ-A-200/11 T73 Bar & Extrusion
Very high strength aerospace aluminium alloy.
A very high strength aerospace aluminium alloy with, depending upon temper, yield strength of 24-68 ksi (165 – 465 MPa) and tensile strength of 40-78 ksi (275 – 540 MPa).
This alloy is used where high strength is required and where good resistance to general corrosion is NOT important.
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QQ-A-200/11 T73 Aluminium Related Specifications
| Sistem / Standar | Negara / Wilayah | Kelas / Peruntukan |
| AA | AMERIKA SERIKAT | 7075-T73 |
| UNS | Internasional | A97075 (7075-T73) |
| EN / DIN | Eropa | EN AW-7075-T73 / 3.4365 |
| EN Nama | Eropa | AlZn5.5MgCu-T73 |
| ASTM B221 | AMERIKA SERIKAT | 7075-T73 extruded bar, rod, shapes & tube |
| BS (Kedirgantaraan) | INGGRIS | L95 (7075 extruded alloy, T73 where specified) |
| AFNOR | Prancis | A-Z5GU-T73 |
Properti
Komposisi Kimia
Alloy QQ A 200/11
SAE AMS QQ-A-200/11
| Elemen Kimia | % Hadir |
| Silikon (Si) | 0.00 - 0.40 |
| Besi (Fe) | 0.00 - 0.50 |
| Tembaga (Cu) | 1.20 - 2.00 |
| Mangan (Mn) | 0.00 - 0.30 |
| Kromium (Cr) | 0.18 - 0.28 |
| Magnesium (Mg) | 2.10 - 2.90 |
| Seng (Zn) | 5.10 - 6.10 |
| Titanium (Ti) | 0.00 - 0.20 |
| Lainnya (Masing-masing) | 0.00 - 0.05 |
| Lainnya (Total) | 0.00 - 0.15 |
| Aluminium (Al) | Keseimbangan |
Sifat Fisik Umum
| Properti Fisik | Nilai |
| Kepadatan | 2.81 g/cm³ |
| Titik Leleh | 635 °C |
| Ekspansi Termal | 23.5 x 10-6/K |
| Modulus Elastisitas | 72 GPa |
| Konduktivitas Termal | 134-160 W/m.K |
| Tahanan Listrik | 40 % IACS |
Aplikasi
- Komponen kedirgantaraan
- Aplikasi teknologi tinggi
- Komponen pertahanan
Karakteristik
- Kekuatan tinggi
- Kemampuan mesin yang sangat baik
- Weldable using resistancce, spot & beam methods
- Poor resistance to atmospheric corrosion
Informasi Tambahan
Sifat Mekanis
These mechanical properties are for bar in the T73 temper.
| Diameter (mm) | Kekuatan Bukti (Min) | Kekuatan Tarik (Min) | Perpanjangan % (Min) |
| Up to & incl. 6.3 | 400 | 469 | 7 |
| Over 6.3 up to & incl. 38 | 420 | 483 | 8 |
| Over 38 up to & incl. 76.2 | 407 | 476 | 8 |
| Over 76.2 up to & incl. 114 | 393 | 469 | 7 |