Material grade
7075
Grade of Aluminum. Grades are not interchangeable.
Aluminum 7075 is a high-strength Al-Zn-Mg-Cu alloy used for machined parts that need more strength than 6061 at a similar weight. It is typically specified in a defined temper, often T6 or T651 for plate. It is a poor choice when the part must be welded or when long-term corrosion resistance is the main requirement.
Grade overview
7075 is a wrought machining alloy. It is not a casting alloy and it is not a general sheet-metal alloy for welded fabrications. Stress corrosion and finishing need attention in service environments that 6061 would tolerate more easily. Plate is often supplied in a stress-relieved temper so that machining does not distort the part as badly. Name that temper if the drawing depends on it.
Strength figures are intentionally omitted here. They are defined by the product standard and the temper, and a public page should not replace the certificate.
Typical manufacturing routes
The usual route is CNC milling or 5-axis machining from plate or bar, sometimes followed by a conversion coating or anodize. Forming and welding are limited compared with 5xxx and 6xxx alloys. If the part is a weldment, 7075 is probably the wrong grade.
Machinability and process constraints
7075 machines well in the commonly supplied tempers and is used for fixtures, tooling plates and structural fittings. It is less forgiving of sharp internal corners and of designs that rely on forming. Distortion control still depends on how much material is removed and on the starting temper. Say whether the blank is T6 or a stress-relieved plate temper.
Typical applications
Typical uses are high-load brackets, fixture plates, molds for short runs and fittings where strength-to-weight matters. Flight hardware and other controlled applications need the specification and the paperwork named by the customer. A 7075 page does not confer an aerospace approval.
What to include in the manufacturing project
Call out 7075, the temper, plate or bar, the quantity and the finish. If 6061 would be acceptable for a lower-stressed version of the part, say that as an explicit alternative. Compare the grade with 6061 only as a buyer decision. Ask for the material certificate when the strength of this alloy is the reason it was chosen.
Buyer questions
Why not just use 6061?
6061 is easier to weld and generally more corrosion-tolerant. 7075 is specified when the section needs the higher strength. If the drawing does not need that strength, 6061 is often the more manufacturable choice.
Can 7075 be anodized?
It can, with results that differ from 6061, especially on color and on fatigue-sensitive parts. Name the anodize specification instead of writing only “anodize”.
Is T651 the same page as 7075?
Yes. The temper stays in the project requirement. This URL is the 7075 grade.
Are suppliers listed here?
Only when a public facility profile is eligible and actually lists the material. An empty list means you can still submit the project for sourcing.