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FOR YOUR MACHINED PART
7075 Aluminum for High-Strength Machined Parts
Review your required strength together with corrosion exposure, joining and finish. A higher-strength alloy is useful when it addresses the property that controls your design.
Start with your controlled drawing, specified material condition and finished-part requirements.
Alloy & temper
Keep the condition explicit
Your load path
Review the critical geometry
Finish & exposure
Agree the protective system
Final dimensions
Define the inspection state
Your supply records
Link the material and drawing
5 Decisions Before Your 7075 Order
Agree the requirements your finished part must meet before comparing the manufacturing route.
Your condition
Alloy, temper, stock form and specification.
Your geometry
Load path, datums and machining access.
Your fit
Bores, fasteners and dimensions after finish.
Your protection
Exposure, coating and visible surfaces.
Your order
Quantity, records and requested delivery.
Strength Is One Part of Your 7075 Decision
For custom 7075 aluminum parts, identify the load path, bearing or fastener interfaces and service environment before discussing material substitution. Keep the specified product form and temper visible throughout machining, finishing and inspection.
Kaiser's 7075 rod and bar technical data lists these typical T6/T651 values using a 0.500-inch-diameter tensile specimen. They are not blanket purchase minima for plate, every stock size or a finished part. Apply the relevant product specification, direction and actual material documentation.
Review the material reference →
For 7075 aluminum machined parts, start with the property and interface that control your drawing. When comparing a 7075 aluminum parts manufacturer, ask for a clear stock, machining, finish and inspection scope.
3 Condition Decisions Before You Order 7075 Aluminum
T6
When your drawing specifies this conditionFor 7075-T6 machined parts, retain the exact stock form and temper through procurement. Discuss the operating environment and approved joining method alongside the strength requirement.
T651
When your controlled stock specification requires it7075-T651 CNC machining needs a suitable stock, material-removal and dimensional-control plan. Keep the callout explicit rather than treating similar typical values as interchangeability approval.
T73 / T7351
When the environment changes the tradeoffKaiser identifies improved stress-corrosion resistance for these conditions compared with T6/T651. Review the associated property specification before proposing a temper change.
7075-T6 vs 7075-T651
T6 is solution heat treated and artificially aged. T651 adds stress relief by stretching under the applicable product standard. For 7075 t651 aluminum, confirm the actual product form and specification; the suffix is not an automatic strength upgrade.
For 7075 t73 aluminum, review the overaged condition when stress-corrosion resistance is a design concern. Temper substitution requires your approval.
Typical strength by condition · MPa
T6 / T651
T73 / T7351
Choose the Machining Route Around Your Features
Precision 7075 aluminum machining starts with your datum scheme, stock condition and finished-part acceptance.
7075 aluminum CNC milling
For pocketed brackets and mounting faces, 7075 aluminum precision milling needs accessible internal radii, stable references and a controlled removal sequence.
Explore the process →7075 aluminum CNC turning
For collars, sleeves and hubs, relate bore, outside diameter and shoulder requirements to a common inspection scheme.
Explore the process →7075 aluminum 5 axis CNC machining
Review multi-face access and clamping clearance for your geometry. Select the route that preserves critical relationships with suitable setups.
Explore the process →For 7075-T6 CNC machining and 7075-T651 CNC machining, identify the specified material condition before route approval.
6 Design Checks Before Your Machining Route Is Frozen
01
Plan the sequence before you cut
For 7075 aluminum thin wall machining, identify webs, pockets and long unsupported features. Review stock allowance and balanced roughing before final dimensions are produced.
Review your drawing →
02
Keep your reference after reclamping
Locate bores, faces and mounting patterns from the approved datum scheme. Specify the unclamped inspection condition where relevant.
Review your drawing →
03
Give the cutter a feasible path
Check pocket radii, reach and obstructions together. A small internal radius can drive tool length, access and inspection decisions.
Review your drawing →
04
Agree the finished interface
Define fit, surface texture and coating condition for your bore and mating component. Keep masking and post-treatment inspection visible on the drawing.
Review your drawing →
05
Review the actual service load
Identify fatigue-sensitive faces and edges. Material typicals alone do not prove service life; agree drawing requirements, finishing and any required qualification evidence.
Review your drawing →
06
Treat the joint as part of the finish
Review exposed and mating surfaces, dissimilar metals and retained moisture. Select the temper and protective system for the actual environment.
Review your drawing →
YOUR MATERIAL REFERENCE
Compare 7075 Data on the Same Basis
Switch between strength, physical properties and chemical limits. Keep the stated product form, temper and test conditions with the numbers.
TYPICAL DATA, WITH CONDITIONS
7075 Aluminum Properties by Temper
Compare strength and elongation in the same product context before selecting your material condition.
| Typical property | O | T6 / T651 | T73 / T7351 |
|---|---|---|---|
| Tensile strength | 228 MPa / 33 ksi | 572 MPa / 83 ksi | 503 MPa / 73 ksi |
| Yield strength | 103 MPa / 15 ksi | 503 MPa / 73 ksi | 434 MPa / 63 ksi |
| Elongation / 4D | 17% | 11% | 13% |
| Brinell hardness | 60 HB | 150 HB | Not listed |
| Ultimate shear strength | 152 MPa | 331 MPa | 303 MPa |
| Elastic modulus | 71.0 GPa | 71.0 GPa | 71.0 GPa |
Typical rod/bar values, not design allowables or purchase minima. Tensile specimen: 0.500-inch diameter; hardness test: 500 kg, 10 mm ball. Direction, section and applicable specification matter. Missing hardness is not a zero.
Kaiser source and test conditions →| Physical property | Typical value / condition |
|---|---|
| Density | 2.80 g/cm³ at 20°C |
| Melting range | 532–635°C |
| Linear thermal expansion | 23.4 µm/m·K, 20–100°C |
| Thermal conductivity | 130 W/m·K T6/T651; 155 W/m·K T73/T7351, at 20°C |
| Electrical conductivity | 33% / 40% IACS respectively, equal volume at 20°C |
What this means for your part
T651 stress relief does not make every machined shape distortion-free. The higher typical elongation of T73/T7351 accompanies a lower typical strength in this reference.
Thermal expansion matters for bearing fits and mixed-material assemblies. Check service temperature and the drawing’s inspection condition together.
Typical rod/bar physical values. Conditions and temper are shown beside each value.
Kaiser source and test conditions →YOUR MATERIAL IDENTITY
7075 Aluminum Composition: Check the Certificate
Use these chemical limits to review the material record for your specified stock. Chemistry identifies the alloy; it does not establish temper, mechanical acceptance or a finished part’s load rating.
| Element | Weight % |
|---|---|
| Zinc (Zn) | 5.10–6.10 |
| Magnesium (Mg) | 2.10–2.90 |
| Copper (Cu) | 1.20–2.00 |
| Chromium (Cr) | 0.18–0.28 |
| Silicon (Si) | ≤0.40 |
| Iron (Fe) | ≤0.50 |
| Manganese (Mn) | ≤0.30 |
| Titanium (Ti) | ≤0.20 |
| Other elements | ≤0.05 each; ≤0.15 total |
| Aluminum (Al) | Remainder |
Composition limits: Kaiser 7075 Rod & Bar technical data, p.2. Aluminum remainder is the balance after the listed elements. Your purchase specification controls acceptance.
Read the manufacturer data →High Strength Aluminum Machined Parts: Define the Joint
Linkages, clamping components, pivot fittings and precision mounts show how geometry and interfaces drive a review. The illustrations do not establish a qualified aerospace part or verified load rating. Keep design authority, qualification and production scope separate.
- Load direction and approved design revision
- Bearing, bushing and fastener interfaces
- Approved bolted or other joining method
- Exposure, coating and inspection condition
Concept geometry and color illustrate the topic; no customer case or tested performance is implied.
7075 aluminum structural brackets
Define load direction, mounting faces and the approved design revision.
7075 aluminum robotic components
Review moving mass, bearing alignment, repeated loads and assembly interfaces.
Custom machined 7075 aluminum components
Use your geometry and service environment to decide whether the higher-strength condition adds useful value.
Protect Your 7075 Fits While Reviewing the Finish
Discuss the exact anodizing or coating system for your service environment. Do not assume that a purple or black concept finish proves corrosion performance. Identify the bearing seats, threads, electrical contacts and cosmetic faces that require masking or specific treatment.
- Anodizing: agree the specified system and post-treatment dimensions.
- Blasted appearance: define texture and the following protective finish.
- Coatings and marking: review adhesion, masking and the approved thermal/process sequence.
Anodized 7075 aluminum parts
Approve an appearance sample and specified protective system. Keep color, sealing and masked features explicit.
Hard anodized 7075 aluminum parts
Discuss wear surfaces, coating thickness, fit allowances and fatigue-sensitive features before treatment.
Marking and protection
Define marking location, legibility and packaging so exposed faces are protected during the agreed handling route.
Compare 7075 Against the Requirement That Controls Your Part
| Your comparison | What to review |
|---|---|
| 7075 vs 6061 | Compare the required strength condition with corrosion, joining, geometry and cost. A stronger nominal alloy is not automatically a better complete design. |
| T6/T651 vs T73/T7351 | Compare the actual property and stress-corrosion requirements for the environment, not just one tensile value. |
| Machined part vs assembly | Review whether a bolted component, bushing or mating part better addresses the interface. Do not assume 7075 can follow a conventional 6061 welding route. |
Explore Aluminum Alloy Alternatives →
7075 vs 6061 aluminum for CNC machining
Compare required strength with joining, corrosion, available stock and the full finished-part cost. Where a welded fabrication or general-purpose component meets your requirement, review 6061 as an alternative before committing to 7075.
Compare 6061 Aluminum →5 Cost Inputs You Can Resolve Before Quoting
Stock and temper
Product form, size, certification and approved substitutions.
Material removal
Deep pockets, thin webs, setup access and finished envelope.
Quantity and releases
For small batch 7075 CNC machined parts, distinguish trial quantity from recurring demand.
Finish
Coating, masking, visible faces and protection during handling.
Evidence
Inspection scope, traceability, first-article records and packaging requirements.
For 7075 aluminum prototype machining, define what your sample must demonstrate and which production conditions it represents.
Review cost drivers →4 Records and Checks for Your 7075 Order
Controlled condition
Link the alloy, temper, product form and approved drawing to the supplied material record.
Critical relationships
Identify the bores, datums, bearing seats and alignment features that need agreed inspection evidence.
Finish and exposure
Define the protective system, masked areas and any application-specific verification or acceptance criteria.
Qualification scope
State any required sector, fatigue, load or special-process approval explicitly. General manufacturing information is not proof of a qualification.
6 Inputs for Your 7075 Aluminum Review
01 CAD and approved design revision
02 7075 stock form, temper and specification
03 Critical load-path and mating features
04 Approved joining and finishing requirements
05 Quantities and requested delivery
06 Inspection, traceability and qualification scope
Identify any open requirements, proposed substitutions or reference-only data. Your team can then compare the material, process and inspection scope on the same basis.
For your 7075 aluminum CNC machining quote, separate mandatory requirements from preferences so your team can compare equivalent finished-part scopes.
Your Questions About 7075 Aluminum
Can I replace 6061 with 7075 without changing the drawing?
No. The material change requires design and procurement approval. Review properties, stock form, temper, corrosion, joining, finish and any qualification requirements.
Can 7075 be welded like 6061?
Do not assume a conventional fusion-welding route is suitable. Review an approved joining method and qualified procedure for the actual application. Bolted joints and other design approaches may need consideration.
What should I specify for a bearing fit in 7075?
Identify the bearing interface, datum scheme, tolerance, surface condition and any post-finish requirement. Agree how and when the critical dimensions will be inspected.
Is 7075 aluminum good for CNC machining?
It can suit a high-strength machined design when stock condition, corrosion protection, joining and inspection are addressed together. Material selection follows your complete requirements.
Can 7075 aluminum be anodized?
Yes, protective and hard anodizing are options to review. Agree the specified system, appearance, masking, thickness and final dimensions. A colored concept does not prove coating performance.
How to prevent warping when machining 7075 aluminum?
Review stress-relieved stock where approved, roughing and finishing sequence, support and unclamped checks. No temper or single machining method guarantees zero movement for every geometry.
What files are needed for a 7075 machining quote?
Send CAD and a controlled drawing, alloy/temper and product specification, quantities, critical interfaces, finish, inspection and records. Identify open requirements separately.
What tolerances can 7075 machining achieve?
Feasibility depends on geometry, stock, feature relationships, coating and inspection method. Mark critical tolerances on your drawing for project review; a blanket number is not a finished-part commitment.
Do you supply qualified 7075 aluminum aerospace machined parts?
State the program, certificates, special processes and approval requirements for review. An alloy’s use in aerospace does not establish LK MFG’s approval for a specific program or critical component.
How should I specify 7075 aluminum aerospace brackets?
Provide the design authority’s material, load, fatigue, finish and documentation requirements. Any supply qualification must be confirmed for your project before acceptance.
