PROGRÈS
1. Présentation du produit
Le 7075-Barre ronde en aluminium T6 is a high-strength, “aircraft-grade” aluminum alloy engineered for applications where superior strength-to-weight ratio and structural integrity are paramount . As a member of the 7000-series (aluminum-zinc-magnesium-copper alloy system), 7075 is renowned as one of the strongest commercially available aluminum alloys, delivering tensile strength comparable to many structural steels while maintaining the lightweight characteristics inherent to aluminum .
Le T6 temper indicates that the material has undergone solution heat treatment followed by artificial aging, a process that achieves peak hardness and optimal mechanical properties . This makes the 7075-T6 aluminum round bar the preferred choice for mission-critical components across the aerospace, defense, automobile, and high-performance industrial sectors .
2. Principales fonctionnalités & Avantages
High Strength-to-Weight Ratio
7075-T6 delivers an exceptional balance of strength and lightness. Avec une résistance à la traction ultime de 83 KSI (572 MPa) et une limite d'élasticité de 73 KSI (503 MPa), it provides the structural performance required for highly stressed applications while significantly reducing component weight .
Excellent Fatigue Resistance
The alloy withstands repeated stress cycles effectively, ensuring long service life under cyclic loading conditions commonly encountered in aerospace and high-performance mechanical systems .
Good Machinability
7075-T6 offers a machinability rating of approximately 70% (compared to 2011 alliage), permettant un tournage efficace, fraisage, forage, et opérations de filetage. It can be machined to tight tolerances with appropriate tooling and process control .
Superior Corrosion Resistance (with Treatment)
While the alloy’s high zinc content makes it more susceptible to corrosion than 6000-series alloys, proper surface treatments—such as anodizing, bardage (Alclad), or protective coatings—effectively mitigate environmental degradation .
Heat Treatable
The T6 temper is achieved through solution heat treatment and artificial aging, allowing for peak strength and hardness optimization .
3. Composition chimique (7075 Aluminium)
| Élément | Pourcentage |
|---|---|
| Aluminium (Al) | 90.0% |
| Zinc (Zn) | 5.1 – 6.1% |
| Magnésium (Mg) | 2.1 – 2.9% |
| Cuivre (Cu) | 1.2 – 2.0% |
| Chrome (Cr) | 0.18 – 0.28% |
| Silicium (Et) | 0.40% maximum |
| Fer (Fe) | 0.50% maximum |
| Manganèse (Mn) | 0.30% maximum |
| Titane (De) | 0.20% maximum |
Data sourced from industry standards ASTM B211 and AMS specifications
4. Propriétés mécaniques (Typical Values – T6 Temper)
| Propriété | Valeur (Impérial) | Valeur (Métrique) |
|---|---|---|
| Résistance à la traction ultime | 83,000 psi | 572 MPa |
| Limite d'élasticité (0.2% compenser) | 73,000 psi | 503 MPa |
| Élongation (in 2″) | 11% | 11% |
| Résistance au cisaillement | 48,000 psi | 331 MPa |
| Dureté Brinell | 150 HB | 150 HB |
| Dureté Rockwell (Échelle B) | 87 HRB | 87 HRB |
| Résistance à la fatigue | ~23,000 psi | ~159 MPa |
Typical values per ASTM B211 and AMS 4122 standards
5. Propriétés physiques
| Propriété | Valeur |
|---|---|
| Densité | 3.00 g/cm³ (0.108 lb/po³) |
| Point de fusion | 890 – 1180°F (477 – 638°C) |
| Conductivité électrique | 33% SIGC |
| Machinability Rating | 70% of 2011 alliage |
| Elastic Modulus | 71 GPa (10,300 ksi) |
Physical properties of 7075 aluminum alloy
6. Caractéristiques & Normes
Our 7075-T6 aluminum round bars are manufactured and tested in full compliance with major international standards:
- ASTM B211 – Spécification standard pour les barres en aluminium et en alliage d’aluminium, Tige, et fil
- ASTMB221 – Spécification standard pour les barres extrudées en aluminium et en alliage d’aluminium, Tiges, Profils, et Tubes
- MSA 4122 – Alliage d'aluminium, 7075, Bar, Tige, et fil
- MSA 4123 – Alliage d'aluminium, 7075, Bar, Tige, et fil (Cold Finished)
- QQ-A-225/9 – Federal Specification for Aluminum Alloy 7075 Bar, Tige, et fil
- DANS 573 / DANS 755 – European Standards for Aluminum and Aluminum Alloys
Color Marking: Ends painted Noir for easy identification
7. Gamme de tailles & Personnalisation
| Paramètre | Gamme |
|---|---|
| Diamètre | 5 mm – 350 mm (0.20″ – 14″) |
| Longueur | 1,000 mm – 6,000 mm (longueurs personnalisées disponibles) |
| Production Method | Extruded or Cold Finished |
| Finition de surface | Finition du moulin, anodisé, or coated |
| Tolérance | Per ASTM standards; tolérances plus strictes disponibles sur demande |
Tailles et spécifications personnalisées disponibles sur demande.
8. Applications
The 7075-T6 aluminum round bar is the material of choice for high-stress, high-reliability environments :
Aérospatial & Defense
- Aircraft structural components and airframes
- Fittings, engrenages, arbres, and fuse parts
- Missile components and landing gear parts
- High-stress airframe structures and bulkheads
Automobile & Motorsports
- High-performance chassis and suspension components
- Racing vehicle structural parts
- Drive shafts and transmission components
Industrial & Mechanical Engineering
- High-stress mechanical parts and precision molds
- Robotic arms and automation equipment
- Hydraulic valve bodies and regulating valves
- Tooling, luminaires, and jigs
Sporting Goods & Consumer
- High-performance bicycle frames and wheels
- Climbing equipment and golf club heads
Semiconductor & Medical Equipment
- Precision tooling for semiconductor manufacturing
- Medical device components requiring high strength and stability
9. Important Considerations
Machining Guidelines
7075-T6 has a machinability rating of approximately 70% of 2011 alliage . For automatic screw machine operations, 7075 in the T6 condition is rated between 75% et 85% of 2011 . Sharp tooling and proper coolant application are recommended to achieve optimal surface finishes and dimensional accuracy.
Soudabilité
Arc and gas welding are not recommended for 7075 aluminum due to its susceptibility to cracking and stress corrosion in the heat-affected zone . Spot or flash welding may be used in limited applications . For assemblies requiring joining, mechanical fastening or adhesive bonding are preferred alternatives.
Corrosion Protection
Due to its high zinc content, 7075-T6 has lower corrosion resistance than 6000-series alloys . For exposure to corrosive or high-moisture environments, protective anodizing, bardage (Alclad), or organic coatings are strongly recommended . The T6 (peak aging) temper is most susceptible to stress corrosion cracking; over-aged tempers such as T7351 offer improved SCC resistance at a moderate strength reduction .
Material Certification
Full material test reports (MTRs) with lot traceability are available upon request .
10. Why Choose Our 7075-T6 Aluminum Round Bar?
- Qualité éprouvée – Manufactured to strict ASTM, MSA, and federal specifications with full traceability
- Wide Inventory – Extensive stock of diameters and lengths ensures fast delivery
- Expertise technique – Our engineering team provides expert material selection and application support
- Solutions personnalisées – Flexible customization for diameter, longueur, tolérance, and surface treatment
- Prix compétitif – Direct manufacturing and efficient supply chain deliver premium quality at competitive prices
- Reliability – 7075-T6 ensures long service life, lower failure risk, and reduced maintenance costs
11. Obtenez un devis aujourd'hui
Contact our sales team to discuss your 7075-T6 aluminum round bar requirements. Whether you need standard stock sizes or custom specifications, we are ready to deliver the high-performance aluminum solutions your mission-critical applications demand.
Toutes les données et spécifications sont fournies à titre de référence uniquement et ne sont pas destinées à une utilisation en matière de conception.. Mechanical properties are typical values and may vary with dimensions and processing. Veuillez consulter notre équipe technique pour connaître les exigences spécifiques des applications..
