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Alloy 7075-T6 sheet and plate products have application throughout aircraft and aerospace structures
where a combination of high strength with moderate toughness and corrosion resistance are required.
Typical applications are alclad skin sheet, structural plate components up to 4 inches in thickness and
general aluminum aerospace applications.
- SPECIFICATIONS:
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- AMS4044 (0), AMS4045 (T6), QQ-A-250/12 (bare); AMS4048 (0), AMS4049 (T6), QQ-A-250/13 (alclad)
- AMS-QQ-A-250/13
AMS-4044, AMS-4045, AMS-4049
- British Specifications:
- L.95, L.98, 7075-T6
- Applications:
- Used where highest strength is needed.
- Size Range:
- .012" - .190" (.3mm - 5mm)
- Weldability:
- Spot or Flash welding can be used, although arc and gas welding are not recommended
| Typical Mechanical Properties |
| Temper |
0 (bare) |
T6 (bare) |
0 (alclad) |
T6 (bare) |
| Tensile Strength (ksi) |
33 |
83 |
32 |
76 |
| Yield Point (ksi) |
15 |
73 |
14 |
67 |
| Min 90° cold-bend radius (.064" thick) |
0-1 T |
4-6 T |
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| Typical Chemical Analysis |
| Cu |
1.20-2.00 |
| Si |
.40 max |
| Fe |
.50 max |
| Mn |
.30 max |
| Mg |
2.10 -2.90 |
| Zn |
5.10-6.10 |
| Cr |
.18 - .28 |
| Ti |
.20 max |
THICKNESSES:: STANDARD 48" X 144" SHEETS
- 7075-T6 .016
- 7075-T6 .020
- 7075-T6 .025
- 7075-T6 .032
- 7075-T6 .040
- 7075-T6 .045
- 7075-T6 .050
- 7075-T6 .056
- 7075-T6 .063
- 7075-T6 .071
- 7075-T6 .080
- 7075-T6 .090
- 7075-T6 .100
- 7075-T6 .125
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- CORROSION RESISTANCE
Alloy 7075-T6 has been thoroughly evaluated for corrosion resistance
of atmospheric weathering, stress-corrosion cracking and exfoliation
in all currently available tempers. These values have been used as
a standard for comparison in the development of more recent high
strength aerospace alloys. Within the 7XXX series of alloys,
resistance to general corrosion attack, SCC and exfoliation improves
significantly in the overage tempers (T7 type) compared with peak
strength tempers (T6).
Generally, the T76 type temper is considered the exfoliation resistant
temper, while the T73 type temper is considered the SCC resistant
temper. It should be noted that T73 is as resistant to exfoliation
as T76, but at lower strength levels.
For applications where good surface appearance is required or in
corrosive environments, alclad 7075 sheet and plate products are
recommended.
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- THERMAL TREATMENT
Many heat treatments and heat treating practices are available to
develop optimum strength, toughness and other desirable characteristics
for proper application of alloy 7075-T6 sheet and plate
products. Refer to MIL-H-6088, Heat Treatment of Aluminum
Alloys for additional information.-
OTHER PRODUCT FORMS
Other product forms of alloy 7075 are extrusions, forgings, wire
rod and bar, and rivets.
REFERENCES:
1. The Aluminum Association, Standards and Data.
2. The Aluminum Association, Position on Fracture Toughness
Requirements and Quality Control Testing T-5.
3. MIL-H-6088, Heat Treatment of Aluminum Alloys.
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