Materials / Engineering reference
7075 aluminum
7075 is a high-strength aluminum alloy. Evaluate its temper, product form and corrosion requirements together before selecting stock for a milled component.
Engineering reference · Sources included
Published:
Specify the temper with 7075 aluminum
7075 aluminum is a high-strength alloy, but the alloy number alone is insufficient for stock selection. Specify the temper and product form alongside it, then check those choices against the design and service conditions. The producer data used here covers rod and bar; it does not establish properties for every 7075 product.
Kaiser's rod-and-bar technical data distinguishes T6/T651 from T73/T7351. It describes improved stress-corrosion resistance for T73/T7351 and rates the machinability and general corrosion resistance of T6/T651 as fair.
| State | Selection consideration |
|---|---|
| T6 / T651 | Check corrosion exposure as well as strength requirements. |
| T73 / T7351 | Consider the improved stress-corrosion resistance described by Kaiser. |
| Product form | Use data and certification for the actual stock; this reference uses rod and bar data. |
Stress-corrosion resistance and general corrosion resistance are different considerations. Do not convert the temper comparison into a promise that the part needs no further evaluation for its environment.
Typical 7075 aluminum data is not a design allowable
Kaiser labels the listed mechanical properties as typical. Obtain the applicable material specification and certified stock condition for a design release. A typical rod-and-bar value cannot serve as a guaranteed minimum for every thickness, temper or product form.
| Record | Review question |
|---|---|
| Material specification | What specification and revision control the order? |
| Product form and dimensions | Does the supporting data apply to this stock? |
| Temper | Does the specified condition match the design requirement? |
| Certification | What evidence confirms the supplied material meets the order? |
| Property basis | Is the value typical, a specification limit or an approved design allowable? |
These questions describe an editorial selection checklist, not additional requirements imposed by the Kaiser datasheet. Keep the original document's qualifiers when transferring information into a design record.
Connect the material to the cut
After choosing stock, review the milled features. The Sandvik slot milling guide ties cutter selection to feature access and emphasizes setup stability and chip removal. It is a general application guide, not a 7075-specific recipe.
Consider an illustrative handoff for a rod-derived component with a closed slot. Record the specified alloy and temper, identify the slot on the controlled drawing, and ask the manufacturing engineer to review cutter access and support. The example provides no stock size, cutting values or achievable tolerance because those require the actual component and setup.
Before programming, resolve any mismatch between the stock specification and the drawing. Use the CNC milling and CNC tolerances entries in Related references to continue the review; neither substitutes for material certification or component-specific engineering approval.
Entity relationships
- 7075 aluminum belongs to Aluminum
Kaiser identifies 7075 as an aluminum alloy; this family association does not imply a product-form specification.
Kaiser Aluminum: Rod & Bar Alloy 7075 — Technical Data, KA-RBH-7075-8.10Locator: Page 1: Alloy description; page 2: chemical composition limits.
- 7075 aluminum — milling connection — CNC milling
Editorial connection with qualification: Kaiser rates T6/T651 machinability as fair for rod/bar. Milling suitability requires the actual temper, stock, tool and setup; no universal capability is asserted.
Kaiser Aluminum: Rod & Bar Alloy 7075 — Technical Data, KA-RBH-7075-8.10Locator: Page 1: Alloy description and comparative characteristics.
Editorial process qualification: review feature geometry, cutter access, stability and chip removal when planning the cut. The guide is not a 7075-specific cutting recipe.
Sandvik Coromant: Groove or slot millingLocator: Groove or slot milling: cutter concepts; how to apply.
Sources
- Rod & Bar Alloy 7075 — Technical Data, KA-RBH-7075-8.10Kaiser Aluminum · Primary referenceSupports: 7075 temper, rod/bar stock and typical data qualifications.Locator: Pages 1–2: alloy description, comparative characteristics and typical properties.
- Groove or slot millingSandvik Coromant · Primary referenceSupports: Cutter access, stability and slot setup.Locator: Groove or slot milling: cutter concepts and how to apply.