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7075 Aluminum Alloy Plate, Sheet, Bar & Tube
Xi'an Dongmeng Group Co., Ltd. supplies 7075 aluminum alloy in plate, sheet, round bar, flat bar, tube, block and custom-machined forms for high-strength structural and precision engineering applications.
7075 is a heat-treatable Al-Zn-Mg-Cu alloy known for its exceptionally high strength-to-weight ratio, good fatigue performance and reliable machinability. It is widely specified for aerospace structures, precision machinery, molds, high-performance automotive components, sporting equipment and other applications where strength and weight reduction are critical.
Available tempers can include T6, T651, T73, T7351 and other product-specific conditions. Cutting, sawing, CNC machining, drilling, surface treatment, material testing and third-party inspection can be arranged according to the purchase specification.
What Is 7075 Aluminum Alloy?
7075 is one of the highest-strength commercially available wrought aluminum alloys. Zinc is its main alloying element, while magnesium and copper contribute to precipitation hardening and high mechanical strength.
In T6 and T651 conditions, 7075 can reach strength levels substantially above general-purpose aluminum alloys such as 6061. Its high specific strength makes it valuable for components that must withstand significant mechanical loads without the weight associated with steel.
However, 7075 is not a universal replacement for 6061 or 6082. It has lower general corrosion resistance, poorer fusion weldability and greater sensitivity to stress-corrosion cracking in peak-strength tempers. Buyers must therefore choose the temper according to the actual loading, corrosion exposure, thickness and fabrication process.
Why Buyers Choose 7075 Aluminum
Exceptional Strength-to-Weight Ratio
7075 provides very high strength at a density of approximately 2.81 g/cm³. This makes it suitable for aircraft parts, high-performance mechanical components and other structures where weight reduction is a design priority.
Good Machinability
The alloy machines well in aged conditions, especially T6 and T651. It can be used for precision-milled components, fixtures, structural blocks, gears, shafts, brackets and complex CNC parts.
Good Fatigue Performance
7075 is frequently used for components exposed to cyclic loading. Final fatigue performance depends on temper, surface finish, machining marks, stress concentration, corrosion exposure and component geometry.
Multiple Temper Options
Buyers can select peak-strength or overaged conditions according to the required balance of strength, toughness and resistance to stress-corrosion cracking.
Suitable for Precision Components
Stress-relieved tempers such as T651 and T7351 are commonly selected for machined plate and block because they can provide better dimensional stability during material removal than non-stress-relieved conditions.
Available 7075 Aluminum Product Forms
7075 Aluminum Plate
7075 aluminum plate is commonly used for high-load structural parts, aerospace tooling, molds, precision machinery, fixtures and machined components.
Common plate tempers include:
7075-T651
7075-T7351
7075-T7651
Other specification-controlled tempers
T651 is generally selected when maximum strength and machining stability are priorities. T7351 sacrifices some peak strength to improve resistance to stress-corrosion cracking and exfoliation corrosion.
A plate inquiry should specify:
Temper
Thickness, width and length
Applicable ASTM, AMS or EN standard
Thickness tolerance
Flatness requirement
Grain direction
Surface condition
Ultrasonic testing class
Machining allowance
Inspection documentation
7075 Aluminum Sheet
7075 aluminum sheet can be supplied in bare or clad form, subject to specification and availability. It is used for aircraft skins, formed structural components, equipment panels and high-performance assemblies.
Common sheet conditions include:
O temper for forming
T6 for high strength
T73 for improved stress-corrosion resistance
Alclad products for enhanced surface corrosion protection
Sheet and plate must not be treated as identical products. Their thickness ranges, tolerances, mechanical-property requirements and available tempers may differ.
7075 Aluminum Bar
Available bar forms can include:
Round bar
Flat bar
Square bar
Rectangular bar
Hexagonal bar
Forged or machined block
7075 bar is used for shafts, connectors, high-strength fastener components, tooling, machine parts and precision-turned components.
Depending on the manufacturing route, bar may be supplied under ASTM B211, ASTM B221, an AMS specification or an agreed EN standard.
For CNC machining applications, specify diameter or section size, straightness, temper, machining allowance and any critical grain-flow requirement.
7075 Aluminum Tube
7075 aluminum tube may be used for specialized high-strength mechanical and aerospace-related components. Availability is more limited than 6061 tube and depends strongly on outside diameter, wall thickness, temper and manufacturing route.
Buyers should identify whether the required material is:
Extruded tube
Seamless drawn tube
Structural hollow profile
Machined hollow bar
Custom extrusion
These products are not automatically interchangeable. Each route has different dimensional tolerances, mechanical properties and inspection requirements.
7075 Aluminum Block
7075-T651 and T7351 blocks are used for molds, jigs, fixtures, robotics, precision machinery and structural parts requiring extensive CNC machining.
When ordering a sawn block, specify:
Finished dimensions
Saw allowance
Six-side machining requirement
Flatness and parallelism
Surface roughness
Ultrasonic inspection
Dimensional report
Grain direction
Typical Supply Range
The following table should be updated using verified production and stock capabilities before publication.
| Product Form | Dimensions to Confirm | Common Tempers |
| Sheet | Thickness × width × length | O, T6, T73 |
| Plate | Thickness × width × length | T651, T7351 |
| Block | Width × thickness × length | T651, T7351 |
| Round bar | Diameter × length | T6, T651, T73511 |
| Flat bar | Thickness × width × length | T6, T6511 |
| Tube | OD × wall thickness × length | Product-specific |
| Custom profile | Section drawing and unit weight | T6, T6511, T73511 |
Exact size range, temper availability and minimum order quantity must be confirmed for each product form.
Applicable Standards
| Product Form | Common Standard | General Scope |
| Sheet and plate | ASTM B209/B209M | Aluminum and aluminum-alloy sheet and plate |
| Rolled or cold-finished bar | ASTM B211/B211M | Aluminum-alloy rolled or cold-finished bar, rod and wire |
| Extruded bar, rod, tube and profile | ASTM B221/B221M | Extruded aluminum-alloy products |
| European sheet and plate | EN 485 series | Aluminum sheet, strip and plate |
| European extrusions | EN 755 series | Extruded rod, bar, tube and profiles |
| Chemical composition | EN 573-3 | Aluminum-alloy chemical composition and product forms |
| Inspection documents | EN 10204 | Inspection-document types |
| Aerospace products | Applicable AMS specification | Alloy-, temper- and form-specific requirements |
ASTM B209 confirms the scope for flat sheet, coiled sheet and plate, but buyers must still verify whether the required alloy, temper, dimensions and properties are covered by the selected edition.
Do not use a long list of ASTM or AMS numbers without confirming that each standard applies to the exact product form and temper being supplied.
7075 Aluminum Chemical Composition
The following values are commonly referenced nominal specification limits for alloy 7075. Contractual acceptance must follow the standard and edition stated in the purchase order.
| Element | Composition, wt.% |
| Zinc, Zn | 5.1–6.1 |
| Magnesium, Mg | 2.1–2.9 |
| Copper, Cu | 1.2–2.0 |
| Chromium, Cr | 0.18–0.28 |
| Silicon, Si | 0.40 max. |
| Iron, Fe | 0.50 max. |
| Manganese, Mn | 0.30 max. |
| Titanium, Ti | 0.20 max. |
| Other elements, each | 0.05 max. |
| Other elements, total | 0.15 max. |
| Aluminum, Al | Remainder |
The Aluminum Association registers 7075 as an international wrought aluminum-alloy designation.
Typical Physical Properties
| Property | Typical Value |
| Density | Approximately 2.81 g/cm³ |
| Elastic modulus | Approximately 71–72 GPa |
| Poisson's ratio | Approximately 0.33 |
| Melting range | Approximately 477–635°C |
| Thermal conductivity | Temper-dependent |
| Electrical conductivity | Temper-dependent |
These values are provided for preliminary engineering reference and are not guaranteed acceptance criteria.
Typical 7075-T6/T651 Mechanical Properties
Representative room-temperature values for selected 7075-T6 or T651 products are shown below.
| Property | Representative Value |
| Ultimate tensile strength | Approximately 540–590 MPa |
| 0.2% proof/yield strength | Approximately 460–520 MPa |
| Elongation | Approximately 5–11% |
| Brinell hardness | Approximately 145–155 HB |
| Elastic modulus | Approximately 71.7 GPa |
These values must not be applied universally. Minimum mechanical properties vary according to:
Product form
Temper
Thickness or diameter
Test direction
Governing standard
Plate location and sampling method
The purchase contract and MTC must use the appropriate form- and thickness-specific property table. Kaiser Aluminum publishes separate technical data for 7075 sheet, coil and plate, reinforcing the need to evaluate properties by product form and temper.
7075 Temper Selection Guide
| Temper | Main Characteristic | Recommended Selection Logic |
| O | Annealed, lowest strength and highest formability | Select for severe forming before final heat treatment |
| T6 | Solution heat-treated and artificially aged | High strength; suitable when stress-corrosion exposure is controlled |
| T651 | T6 plus stress relief by stretching | Common for machined plate requiring high strength and dimensional stability |
| T6511 | Stress-relieved extrusion with minor straightening | Common for bars, rods and extruded sections |
| T73 | Overaged for improved stress-corrosion resistance | Choose when environmental resistance is more important than maximum strength |
| T7351 | Stress-relieved plate in T73-type condition | Suitable for thick plate and demanding corrosion-sensitive structures |
| T73511 | Stress-relieved extruded condition | Used for appropriate bar, tube or profile products |
| T76/T7651 | Intermediate balance of strength and corrosion performance | Confirm form-specific requirements and availability |
T6 vs. T651
Both conditions provide high strength. T651 includes stress relief by controlled stretching, making it generally more suitable for plate that will undergo extensive machining.
T651 vs. T7351
T651 normally provides higher peak strength. T7351 offers improved resistance to stress-corrosion cracking and exfoliation corrosion but with some reduction in strength.
The correct choice should be based on component thickness, residual-stress sensitivity, machining volume, loading direction and service environment.
7075 vs. 6061 Aluminum
| Selection Factor | 7075 | 6061 |
| Strength | Very high | Medium |
| Machinability | Good to very good in aged tempers | Good |
| Fusion weldability | Generally poor | Good |
| Corrosion resistance | Moderate; temper-sensitive | Generally better |
| Formability | Limited in T6/T651 | Better overall |
| Typical use | High-load machined components | General structures and welded fabrication |
| Material cost | Usually higher | Generally more economical |
| Availability | Specialized by form and temper | Broadly available |
Choose 7075 when high strength and weight reduction are the primary design requirements. Choose 6061 when welding, general corrosion resistance, forming flexibility and economical procurement are more important.
7075 vs. 7050 Aluminum
Both 7075 and 7050 are high-strength aerospace aluminum alloys, but they should not be treated as direct equivalents.
| Selection Factor | 7075 | 7050 |
| General availability | Broadly recognized and available | More specialized |
| Peak strength | Very high | High |
| Thick-section toughness | Thickness-dependent | Often selected for better thick-section performance |
| Stress-corrosion resistance | Improved in T73-type tempers | Commonly favored for demanding thick aerospace plate |
| Typical forms | Sheet, plate, bar and extrusions | Frequently heavy plate, forgings and aerospace components |
| Substitution | Requires engineering approval | Requires engineering approval |
For thick, damage-tolerant aerospace structures, 7050 may be preferred. For widely available high-strength machined parts, 7075-T651 remains a common selection.
Machining 7075 Aluminum
7075-T6 and T651 are suitable for high-speed precision machining. Common processing operations include:
CNC milling
CNC turning
Drilling
Tapping
Boring
Contour machining
Waterjet cutting
Precision sawing
Surface grinding
Chamfering and deburring
For parts requiring substantial material removal, stress-relieved plate is generally preferable. A balanced machining sequence should be used to reduce the risk of distortion.
An RFQ for machined components should include:
2D drawing and 3D model
Alloy and temper
Finished dimensions
Dimensional and geometric tolerances
Surface-roughness requirements
Critical load direction
Surface treatment
Inspection requirements
Required quantity
Can 7075 Aluminum Be Welded?
7075 is generally not recommended for conventional fusion-welded load-bearing structures. Its zinc, magnesium and copper content creates susceptibility to solidification cracking and deterioration of heat-affected-zone properties.
For critical components, consider:
Mechanical fastening
Bolted joints
Riveting
Adhesive bonding
Redesigning with a more weldable alloy
Specialized solid-state joining methods evaluated by qualified engineers
Do not market 7075 as having "excellent weldability." This is technically misleading and may cause a buyer to select the wrong alloy.
If welding is unavoidable, the procedure, filler selection, heat input, joint design and post-weld properties must be validated by qualified welding and design personnel.
Forming and Heat Treatment
7075-T6 and T651 have limited cold-forming capability compared with softer aluminum alloys. Severe bending can cause cracking, particularly across unfavorable grain directions or at small bend radii.
For formed parts, buyers may consider:
Purchasing material in the O condition
Forming the component
Applying controlled solution heat treatment
Quenching under a qualified process
Artificially aging to the specified final temper
Heat treatment must be performed by a qualified facility. Incorrect solution temperature, transfer time, quenching or aging can cause distortion, reduced properties or inconsistent corrosion performance.
Surface Treatment
Available surface options can include:
Mill finish
Precision-machined finish
Mechanical polishing
Anodizing
Hard anodizing
Chemical conversion coating
Painting
Protective film
Because copper and zinc influence the anodizing response, 7075 may not achieve the same bright, uniform decorative appearance as some 6xxx alloys. Buyers should approve a sample when color consistency is critical.
For components exposed to moisture, salt or chemicals, surface treatment should be selected together with drainage design and galvanic isolation.
Typical Applications
Aerospace Components
7075 is widely used for high-load aircraft and aerospace components, including structural fittings, frames, supports, bulkhead-related parts and machined assemblies.
Aerospace applications require the exact AMS or customer specification, approved source requirements, traceability and inspection plan. Supplying the correct alloy alone does not establish aerospace approval.
Precision Machinery
7075 plate and block are used for fixtures, robotic components, equipment supports, high-load brackets and precision machine parts.
Molds and Tooling
T651 plate may be selected for molds, tooling plates, jigs and fixtures requiring strength, wear resistance and good machinability.
Automotive and Motorsport
Applications may include suspension-related components, hubs, brackets, structural connectors and racing parts where weight reduction is important.
Safety-critical automotive parts require engineering validation, fatigue analysis and complete material traceability.
Sporting Equipment
7075 is used for climbing equipment, bicycle components, archery equipment, high-performance fasteners and other sporting products.
High-Strength Fasteners and Mechanical Parts
Bar and rod may be machined into bolts, shafts, pins, gears and connectors. Final fastener performance depends on grain flow, machining, heat treatment, thread production and inspection-not only the base alloy.
Quality Inspection
A project-specific inspection plan may include:
Alloy and heat-number verification
Chemical-composition analysis
Temper verification
Tensile-property testing
Hardness testing
Dimensional inspection
Flatness and straightness measurement
Surface inspection
Ultrasonic testing for applicable plate
Machined-part dimensional inspection
Marking and traceability review
Final documentation verification
Available documents should be agreed before order confirmation and may include:
Mill test certificate
EN 10204 3.1 inspection certificate
Chemical analysis
Mechanical-property report
Ultrasonic test report
Dimensional inspection report
Certificate of origin
Packing list
Optional third-party inspection report
For aerospace or safety-critical applications, the buyer must clearly state source approval, traceability, testing and specification-edition requirements before quotation.
Export Packing
Packing can be adapted to the product form and transportation method.
Plate and Sheet
Surface-protective film where required
Moisture-resistant wrapping
Edge and corner protection
Reinforced wooden pallets or cases
Steel or plastic strapping
Material identification tags
Bar and Tube
Bundled packing
End protection
Waterproof wrapping
Wooden supports or cases
Separation between different sizes and heats
Identification at bundle and item level where required
Machined Parts
Individual protective wrapping
Partitioned cartons or cases
Anti-collision protection
Moisture control
Drawing-number and batch identification
Destination-specific wood-treatment and marking requirements should be included in the inquiry.
What Determines the Price of 7075 Aluminum?
The quoted price depends on:
Product form
Temper
Dimensions
Order quantity
Standard and specification
Aerospace approval requirements
Bare or clad condition
Dimensional tolerance
Ultrasonic testing level
Cutting and machining
Surface treatment
Inspection documentation
Packing
Destination and Incoterms
Current aluminum and alloying-element costs
Quotations should be compared using identical standards, tempers, dimensions, inspection requirements and delivery terms.
Why Source 7075 Aluminum From Us?
Xi'an Dongmeng Group Co., Ltd. supports overseas buyers requiring high-strength aluminum materials, custom processing and export documentation.
Supply options can include:
7075 plate, sheet, block, bar and tube
T6, T651, T73 and T7351-type conditions
ASTM-, EN- or AMS-based order review
Saw cutting and custom blank preparation
CNC machining
Dimensional inspection
Material traceability
Mill test documentation
Optional third-party inspection
Export-protective packing
Consolidated shipment with other aluminum products
Actual stock, size range, certifications, source approvals, MOQ and production time must be confirmed during quotation.
Frequently Asked Questions
Is 7075 aluminum stronger than 6061?
Yes. In commonly used aged conditions, 7075 provides substantially higher tensile and yield strength than 6061. However, 6061 generally offers better weldability, corrosion resistance and fabrication flexibility.
What is the difference between 7075-T6 and 7075-T651?
Both are high-strength conditions. T651 material is stress-relieved by stretching after heat treatment, making it a common choice for plate and extensively machined components.
Should I choose 7075-T651 or T7351?
Choose T651 when maximum strength and machining stability are the main priorities. Consider T7351 when improved stress-corrosion resistance and toughness are more important than achieving peak strength.
Can 7075 aluminum be welded?
Conventional fusion welding is generally not recommended for critical 7075 components because of cracking susceptibility and loss of heat-affected-zone properties. Mechanical fastening or a more weldable aluminum alloy may be preferable.
Can 7075 aluminum be anodized?
Yes, but its anodized appearance may be darker or less uniform than 6061. Approve a sample when decorative color matching is important.
Is 7075 suitable for marine environments?
It can be used only after the corrosion environment, temper, protective finish and galvanic contact have been evaluated. For prolonged saltwater exposure, another alloy may offer lower corrosion risk.
Is 7075 an aerospace-grade aluminum?
7075 is widely used in aerospace applications, but material should only be described as aerospace-compliant when it meets the required AMS or customer specification, traceability and source-approval conditions.
Do you provide ultrasonic-tested 7075 plate?
Ultrasonic inspection can be requested for applicable plate. State the required test method, acceptance class and reporting requirements before quotation.
Can you supply custom-cut 7075 blocks?
Custom sawn or machined blocks can be evaluated from required dimensions, tolerances, machining allowance, quantity and inspection requirements.
Can you supply an EN 10204 3.1 certificate?
An EN 10204 3.1 inspection certificate may be arranged when supported by the production and documentation route. This requirement must be confirmed before ordering.
What information should I include in my RFQ?
Please provide:
Product form
Alloy and temper
Applicable standard
Dimensions and tolerances
Quantity
Surface condition
Cutting or machining requirements
Testing and documentation
Packing requirements
Destination port
Required delivery schedule
Drawing and application where relevant
Request a Quote for 7075 Aluminum
Send us your required product form, temper, standard, dimensions, quantity and destination.
For machined parts, attach a drawing indicating critical dimensions, tolerances, surface treatment and inspection requirements.
Phone Number & Email
+8615769214734
office@dongmjd.com
Dong: +8615769214734
Our Office Address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
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