Klíčové informace
- Výjimečná síla: 6066 aluminum extrusions, mostly in the T6 temper, offer high strength and long service life, making them suitable for demanding structural use.
- Odolnost proti korozi: This alloy resists corrosion well and performs in outdoor and mildly aggressive environments, though harsh settings may need added protection.
- Všestranné použití: 6066 aluminum serves aerospace, automotive, and structural parts where a balance of strength and formability matters.
- Chemické složení: Silicon, magnesium, copper, and manganese combine to deliver strength while keeping the alloy easy to extrude and weld.
- Flexibilita při obrábění: It cuts, welds, and forms readily, so parts can be shaped to specific project needs.
Úvod
6066 aluminum is a strong, corrosion-resistant 6000-series alloy with good mechanical properties and the ability to handle high stress. It is widely used in aerospace for critical components such as aircraft bodies and wing structures, as well as in automotive parts, because of its robustness.
Its strength comes from a balanced mix of silicon, magnesium, copper, and manganese, which also gives it durability and pressure resistance. That makes 6066 aluminum extrusions a reliable choice for demanding applications. The sections below cover its composition, properties, comparisons with other alloys, and temper options so you can select the right grade.
Co je hliník 6066?
6066 is a premier alloy for extrusion and forging, valued for its strength and corrosion resistance. It belongs to the 6000 series and contains silicon and magnesium, which broaden its versatility. Available as profiles, bars, and plates, it meets standards such as ASTM B209 and QQ-A-200/10E, supporting long-life applications. Its mechanical properties suit aerospace structures including aircraft bodies and bulkheads, as well as car frames, defense equipment, and electrical parts. The alloy accepts heat treatments like T4, T6, and T651 to match different requirements.
Chemické složení hliníku 6066
6066 is a strong alloy used for shapes and forgings in welded assemblies. Its main alloying additions are magnesium and silicon, with about 0.8% to 1.4% magnesium and 1.0% to 1.8% silicon. Small amounts of copper and manganese improve weldability and strength. These traits explain why 6066 is common in automotive and aerospace work, where toughness, corrosion resistance, and workability are needed together.
| Prvek | Rozsah složení (% hmotnostně) | Popis |
|---|---|---|
| Hliník (Al) | 94.4 – 97.0 | Primary component; lightweight, corrosion-resistant base. |
| Křemík (Si) | 1,0 – 1,8 | Zvyšuje pevnost a snižuje bod tání pro lepší tekutost při tváření. |
| Hořčík (Mg) | 0.8 – 1.4 | Enhances strength and corrosion resistance for demanding environments. |
| Měď (Cu) | 0.7 – 1.2 | Zvyšuje pevnost a zlepšuje svařitelnost pro konstrukční aplikace. |
| Mangan (Mn) | 0.6 – 1.1 | Adds toughness and fatigue resistance for high-stress uses. |
| Železo (Fe) | 0,5 (max.) | Udržuje se na nízké úrovni, aby se zachovala odolnost proti korozi a čistota slitiny. |
| Zinek (Zn) | 0,25 (max.) | Omezené, aby se nesnížila odolnost proti korozi. |
| Titan (Ti) | 0,2 (max.) | Zjemňuje strukturu zrna pro zlepšení kvality výroby. |
| Chrom (Cr) | 0,4 (max.) | V malém množství zvyšuje houževnatost a odolnost proti opotřebení. |
| Ostatní (každý) | 0,05 (max.) | Stopové prvky, kontrolované pro zajištění konzistence slitiny. |
| Ostatní (celkem) | 0,15 (max.) | Celkem drobné prvky, udržované na nízké úrovni pro zachování výkonu. |
Klíčové vlastnosti hliníku 6066
6066 aluminum performs well across several measures:
- Lehká hustota: At 2.71 g/cm3, it is light yet strong, which helps where weight must stay down.
- Vysoká pevnost: In the T6 temper, tensile strength reaches about 350-400 MPa, higher than many general-purpose alloys, which suits heavy and high-stress parts.
- Moderate Corrosion Resistance: It resists corrosion in many settings but may need protection in very wet or harsh environments.
- Dobrá tvarovatelnost: It shapes readily by forging or extrusion, allowing detailed or custom profiles.
- Dobrá svařitelnost: With the right technique, it welds well so joints stay strong.
- Aplikace: It is used in aerospace, automotive parts, and high-strength forgings where long service life and corrosion resistance matter.
| Majetek | Value / Description |
|---|---|
| Hustota | 2.71 g/cm3 |
| Bod tání | ~570-640 C |
| Pevnost v tahu (teplota T6) | ~350-400 MPa (estimated) |
| Pevnost v tahu (teplota T6) | ~320-360 MPa (estimated) |
| Odolnost proti korozi | Středně náročné, v drsném prostředí mohou vyžadovat nátěry |
| Tepelná vodivost | ~150-170 W/m*K (estimated) |
| Elektrická vodivost | ~40-45% IACS (estimated) |
| Svařitelnost | Dobrý, ale může vyžadovat pečlivou techniku |
| Tvarovatelnost | Vhodné pro kování a vytlačování |
| Rychlost tepelné roztažnosti | 23.5 x 10^-6 /C (estimated) |
Hliník 6066 vs. ostatní slitiny
6066 stands out next to 6061, 7075, and 2024. Its key advantage is good corrosion resistance, so it performs outdoors and in wet environments where 7075 is weaker. It also pairs strength with weldability, so it can beat 6061 when you need both high strength and good welds.
Aerospace and structural buyers often choose 6066 when they want strong, workable material that can be adapted to the job. The table below compares the four alloys directly.
6066 vs. 6061 vs. 7075 vs. 2024 Hliník
| Slitina | Klíčové charakteristiky | Síla | Odolnost proti korozi | Svařitelnost | Typické aplikace |
|---|---|---|---|---|---|
| 6066 | Vysoká pevnost, tepelně zpracovatelné, dobrá tvářitelnost | Vysoká (T6: ~400 MPa) | Dobrý | Dobrý | Letecké komponenty, konstrukční výlisky |
| 6061 | Univerzální, tepelně zpracovatelný, s vyváženou pevností a tvařitelností | Mírná (T6: ~310 MPa) | Velmi dobré | Vynikající | Konstrukční prvky, lodní příslušenství, všeobecné použití |
| 7075 | Výjimečná pevnost, tepelně zpracovatelné, vysoká odolnost proti únavě | Velmi vysoká (T6: ~570 MPa) | Mírná | Špatný | Letecký průmysl, vysoce namáhané komponenty, vojenské vybavení |
| 2024 | Vysoká pevnost, dobrá obrobitelnost, tepelné zpracování | Vysoká (T3: ~480 MPa) | Špatný | Špatný | Letecké pláště, konstrukční díly pro letecký průmysl |
Shrnutí:
- 6066: High strength and good formability; common in aerospace parts.
- 6061: Versatile with very good corrosion resistance; used widely in general building.
- 7075: Highest strength; chosen for high-stress aerospace and military parts.
- 2024: Very strong and machinable but low corrosion resistance; used in aircraft skins.
Pick 6066 when you need high-strength, easily formed parts. Use 6061 for flexible general use, 7075 for maximum strength, and 2024 for machinable aerospace skins.
Porovnání teplot 6066 T4, T6 a T651
6066 comes in several tempers to meet industry needs. T4 offers good toughness and bendability, making it suitable for formable aerospace parts like partitions and bulkheads. It is also used for fuel tanks and pipelines where shape and strength must hold after work. T6 gives the highest strength, up to about 415 MPa, for critical parts like wing supports and engine covers. T651 adds stress relief for longer life in harsh conditions. Knowing each temper helps you select the right 6066 profile.
| Temperament | Klíčové charakteristiky | Síla | Odolnost proti korozi | Tvarovatelnost | Typické aplikace |
|---|---|---|---|---|---|
| 6066 T4 | Tepelně ošetřeno roztokem, přirozeně zestárlé, vynikající tvarovatelnost | Mírná (~320 MPa) | Dobrý | Vynikající | Letecké komponenty, tvářitelné konstrukční díly |
| 6066 T6 | Tepelně ošetřený roztok, uměle zestárlý, vysoká pevnost | Vysoká (~400 MPa) | Dobrý | Mírná | Letecké konstrukce, vysokopevnostní výlisky |
| 6066 T651 | T6 s uvolněním napětí protažením, vysoká pevnost, lepší stabilita | Vysoká (~400 MPa) | Dobrý | Mírná | Přesné letecké díly, aplikace citlivé na namáhání |
Shrnutí:
- 6066 T4: Best formability for shaped aerospace parts.
- 6066 T6: High strength for aircraft structures and extrusions.
- 6066 T651: High strength with stress relief for stable, stress-sensitive parts.
Choose T4 when you must form the part, T6 for maximum strength, and T651 for stress-sensitive applications that need stability.
Tipy pro získávání hliníku 6066
- Ensure Quality Certifications: Choose suppliers with ISO certification for 6066 aluminum and confirm compliance with ASTM B221 for extrusions. Linsy Aluminum supplies 6066 with the corrosion resistance and strength needed for high-quality, standards-compliant jobs.
- Evaluate Manufacturing Expertise: Pick suppliers skilled at extrusion and heat treatment so you get reliable 6066 aluminum. Linsy Aluminum produces 6066 in the T6 temper for tough applications that need strong mechanical properties.
- Align with Application Needs: Select 6066 for large jobs in construction, transportation, and machinery. Linsy Aluminum makes 6066 alloys for bridges, train frames, and heavy equipment.
- Secure Efficient Supply Chains: Work with suppliers that accept low minimum orders and ship worldwide. Linsy Aluminum delivers 6066 quickly and offers free samples to keep your project on schedule.
Závěr
6066 aluminum extrusions combine high strength, light weight, and good formability, which makes them useful across construction, automotive, and aerospace work. The main trade-off is only moderate corrosion resistance, so parts exposed to harsh or wet environments often need coatings or cladding to stay protected.
Proč si vybrat hliník Linsy 6066?
Linsy is a leading aluminum supplier of high-quality 6066 alloy that meets ISO 9001, ASTM B209, GB/T 3190, AMS, and JIS standards. With more than 20 years in the field and annual capacity up to 300,000 tons, Linsy supplies sheets, plates, extrusions, and custom shapes in many sizes, including the specific dimensions you need, with low minimum order quantities. The team ships worldwide and offers free samples, so your project stays on schedule.
Ready to specify your material? Request a free quote for 6066 aluminum extrusions from Linsy and get engineering support for your next build.
Často kladené otázky
Jaké jsou běžné aplikace hliníkových výlisků 6066?
6066 aluminum extrusions are used in aerospace for parts like fuselages and wing spars, where corrosion resistance and strong mechanical properties matter. They are also used in car frames, electrical parts, and marine hardware that needs reliable performance and corrosion protection.
Jak si vede hliník 6066 ve srovnání s jinými hliníkovými slitinami?
6066 is known for good corrosion resistance and stable performance under sustained stress. Next to 6061 and 7075, it resists corrosion better while still offering strong, workable material. That balance of corrosion resistance and steady strength is why it is widely chosen in aerospace.
Jaké jsou specifikace obrábění hliníku 6066?
6066 suits cutting and forging and follows ASTM rules for consistent quality. It is often used for aviation accessories, pipes, and structural parts that need accuracy. Its corrosion resistance and standards compliance make it practical for precision machining jobs.
