7075-T651 T7351 Aluminum Plate
7075-T651 T7351 Aluminum Plate Overview
7075-T651 T7351 Aluminum Plate is a high-strength heat-treatable Al-Zn-Mg-Cu alloy plate widely selected for highly loaded structural parts, aerospace tooling, fixtures, molds and precision-machined components.
Both T651 and T7351 are stress-relieved plate conditions designed to improve dimensional stability during machining. T651 is generally selected when higher strength is the priority, while T7351 is commonly considered where improved resistance to stress-corrosion cracking is important.
SASA ALUMINUM supplies 7075 aluminum plate in custom thicknesses, widths and lengths with sawing, cut-to-size and machining options according to customer drawings and project specifications.
7075 Aluminum Plate Quick Information
Alloy: 7075 / UNS A97075
Temper: T651 / T7351
Product Form: Aluminum Plate
Reference Standard: ASTM B209
Aerospace References: AMS 4045 (T651) / AMS 4078 (T7351)
Surface: Mill Finish / Machined Surface as Required
Processing: Saw Cutting / CNC Machining / Drilling / Milling
Documentation: MTC / Dimensional Inspection / Additional Testing as Agreed
7075-T651 T7351 Aluminum Plate Specifications
| Item | Supply Information |
|---|---|
| Alloy | 7075 |
| Temper | T651 / T7351 |
| Product Form | Aluminum Plate |
| Reference Standard | ASTM B209 |
| Aerospace Specification | AMS 4045 for T651 / AMS 4078 for T7351 when specified |
| Thickness | Custom According to Required Specification |
| Width & Length | Standard Plate / Cut-to-Size / Drawing Size |
| Surface | Mill Finish / Saw Cut / Machined |
| Processing | Saw Cutting / Milling / Drilling / CNC Machining |
7075-T651 vs 7075-T7351 Aluminum Plate
Temper selection is one of the most important purchasing decisions for 7075 plate. T651 and T7351 are both stress-relieved conditions, but they provide different balances between strength and stress-corrosion resistance.
| Feature | 7075-T651 | 7075-T7351 |
|---|---|---|
| Strength Level | Higher strength condition | Slightly reduced strength compared with T651 |
| Stress Relief | Stress relieved by stretching | Stress relieved by stretching |
| Stress-Corrosion Resistance | Standard T6-family performance | Improved resistance for more demanding environments |
| Machining | Excellent for high-strength machined components | Good machining performance with improved corrosion margin |
| Typical Selection | High-load structural parts, tooling and fixtures | Aircraft structures and components where SCC resistance is important |
Temper Selection:
Choose T651 when maximum strength is the primary requirement. Consider T7351 when improved resistance to stress-corrosion cracking is more important and the lower strength level is acceptable for the design.
7075 Aluminum Chemical Composition
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti |
|---|---|---|---|---|---|---|---|---|
| 7075 | ≤0.40 | ≤0.50 | 1.20–2.00 | ≤0.30 | 2.10–2.90 | 0.18–0.28 | 5.10–6.10 | ≤0.20 |
Chemical composition should be confirmed against the applicable product specification and batch-specific material certificate.
7075-T651 and T7351 Mechanical Properties
Mechanical properties vary according to plate thickness, orientation and applicable specification. The following values are useful comparative references rather than universal guarantees for every plate thickness.
| Temper | Typical Tensile Strength | Typical Yield Strength | Typical Elongation |
|---|---|---|---|
| T651 | Approx. 572 MPa | Approx. 503 MPa | Approx. 11% |
| T7351 | Approx. 503 MPa | Approx. 434 MPa | Approx. 13% |
Actual required values should be confirmed according to plate thickness, test direction, applicable material specification and batch MTC.
7075 Aluminum Plate for Precision Machining
7075-T651 and T7351 plates are frequently selected for heavily machined parts because the stress-relieved temper helps reduce dimensional movement compared with material that has not undergone stress-relief treatment.
| Saw Cutting
Custom plate blanks |
CNC Milling
Precision machined parts |
Drilling
Drawing-based hole patterns |
Custom Blanks
Near-net machining sizes |
Important Considerations Before Machining
7075 Aluminum Plate Inspection & Quality Control
| Inspection Item | Purpose |
|---|---|
| Material Verification | Confirm 7075 alloy, temper and material traceability |
| Thickness Inspection | Verify plate thickness and agreed tolerance |
| Width & Length | Confirm full plate or cut blank dimensions |
| Flatness | Important for machining and tooling applications |
| Mechanical Testing | Verify tensile properties according to applicable specification |
| Ultrasonic Inspection | Available when required by aerospace or project specification |
| Documentation | MTC and agreed inspection documentation |
Applications of 7075-T651 T7351 Aluminum Plate
| Aerospace Structures
High-load structural components |
Aircraft Fixtures
Precision aerospace tooling |
High-Load Components
Strength-critical machined parts |
| Molds & Tooling
Machined tooling components |
Precision Machinery
Dimensionally controlled components |
Custom Machined Parts
Drawing-based structural components |
7075 Aluminum Plate Packaging
Packaging is selected according to plate thickness, dimensions, surface condition and transportation requirements. Cut blanks and machined plates can receive additional protection when required.
Frequently Asked Questions
What is 7075-T651 aluminum plate?
7075-T651 is solution heat treated, artificially aged and stress relieved by stretching. It is commonly selected for applications requiring high strength and good machining stability.
What is the difference between 7075-T651 and T7351?
T651 generally provides higher strength, while T7351 is overaged to improve resistance to stress-corrosion cracking. Final selection depends on mechanical and environmental requirements.
Which temper is better for aerospace applications?
Both tempers are used in aerospace-related applications. T651 may be preferred where maximum strength is critical, while T7351 can be preferred where improved stress-corrosion resistance is required.
Can 7075 aluminum plate be supplied as machining blanks?
Yes. Plates can be reviewed for saw cutting and custom blank sizes according to finished part dimensions and machining allowance.
Can ultrasonic inspection and MTC be supplied?
Yes. Material certificates and additional inspection such as ultrasonic testing can be arranged according to the confirmed specification and order requirements.
Request a 7075-T651 or T7351 Aluminum Plate Quote
Send your required temper, thickness, width, length, quantity, machining allowance and inspection requirements. SASA ALUMINUM will review the specification before confirming the offer.
