UNS A97075 aluminum plate is a type of Al-Zn-Mg-Cu super-hard
aluminum alloy known for its exceptional high strength, hardness,
and excellent mechanical properties. It also exhibits good anodic
reactivity. The presence of chromium enhances its resistance to
stress corrosion cracking, while zinc imparts strength comparable
to that of steel.
7075
aluminum alloy (AA7075) is an aluminum alloy with zinc as the primary
alloying element. It has excellent mechanical properties and
exhibits good ductility, high strength, toughness, and good
resistance to fatigue. It has moderated formability when in the
fully soft, annealed temper and can be heat-treated to strength
levels that are comparable to many steel alloys. In fact, grade
7075 aluminum is stronger than many types of mild steel.
7075-T6 aluminum has nearly double the strength-to-weight of grade
2 titanium
the 7075 Al alloy is most preferred by the aircraft industry. The
composition of this specific Al alloy is 5.1–6.1% zinc, 2.1–2.9%
magnesium, 1.2–2.0% copper and less than 0.5% of silicon, iron,
manganese, titanium, chromium and other trace metals
One of the key reasons to consider 7075 aluminum is for its high strength. Alloyed with zinc, it is one of the
strongest alloys available and stronger than 6061. But it offers a
lower level of corrosion resistance than 6061 and is also more
difficult to weld. 7075 is used in marine, automotive, and
aerospace applications where strength is a very high priority. It
is also used in a firearms manufacturing and is even used in hang
glider frames
Aluminum Sheet / Plate 7075-T6/T651 is normally used for aerospace, military, and
automotive applications. 7075 aluminum is the strongest aluminum, with the strength of many steels, while
retaining aluminum’s lightweight qualities and corrosion
resistance.
| Alloy | Temper | Thickness | Width |
| 7075 | T651 | 4-260mm | 1200-3800mm |
| 7075 | T7651 | 4-260mm | 1200-3800mm |
| 7075 | T7351 | 4-260mm | 1200-3800mm |
Mechanical properties
| Alloy state | Direction | Thickness (mm) | Tensile strength | Yield Strength | Breaking Elongation | Standard |
| 7075-T651 | LT | 6-260 | 570-590Mpa | 495-515Mpa | 10-13.5 | GB/T3880 |
| 7075-T7651 | LT | 6-102 | 550-560Mpa | 480-490Mpa | 10.5-12.5 | AMS4045K |
| 7075-T7351 | LT | 6-102 | 500-520Mpa | 420-435Mpa | 10-12.5 | AMS4078 |
Aluminum 7075 is a member of the 7000 series, which has zinc as its
main alloying component and is well known for its extraordinarily
high strength. Tempering treatment can then further enhance its
high mechanical strength. This property makes alloy 7075 very
popular in the aerospace and defense industries.
| Typical Mechanical Properties of 7075 Aluminium Plate |
| Temper | Thickness (mm) | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
| T6 | 1~3.2 | 540 | 470 | 8 |
| T6 | 3.2~6.3 | 540 | 475 | 8 |
| T651 | 6.3~12.5 | 540 | 460 | 9 |
| T651 | 25~50 | 530 | 460 | --- |
| T651 | 60~80 | 495 | 420 | --- |
| T651 | 90~100 | 460 | 370 |
Its strength is comparable to that of many types of steel, but it
has a much lower density. The alloy is an excellent substitute to
steel in high-stress applications. It also excels in withstanding
fatigue stress, rendering it very reliable, a quality much sought
after in the industries mentioned above.
Alloy 7075 offers only average corrosion resistance, an outcome of
the small amount of copper included in its chemical composition. It
also features reasonable machinability and poor forming and
weldability. Another drawback of this alloy is that it has a
comparatively high-cost relative to other aluminum alloys due to
its exceptionally high strength.
