Aloi ya Alumini 6061: Comprehensive Technical Specifications and Application Guide
As a professional aluminum supplier and exporter based in Bandung, we are committed to providing global clients with high-quality aluminum materials that meet international standards. Aloi ya Alumini 6061 is one of the most popular and widely used grades in our core export product portfolio. This article provides a comprehensive technical introduction to Aluminum Alloy 6061, helping you gain an in-depth understanding of the properties, vipimo, and applications of this “versatile aluminum alloy.”
1. Alloy Overview and Metallurgical Characteristics
Alloy Family: 6061 belongs to the Al-Mg-Si series of heat-treatable strengthening aluminum alloys.
Primary Strengthening Phase: Mg₂Si
Standard Temper: T6 (Solution heat-treated and then artificially aged) is the most commonly supplied condition.
International Standard Equivalents:
- China: 6061 (GB/T. 3190)
- USA: 6061 (ASTM B221, ASTM B211)
- Ulaya: EN AW-6061 (Katika 573)
- Japan: A6061 (JIS H4000)
2. Detailed Chemical Composition Analysis
Muundo wa kemikali wa 6061 aluminum alloy is strictly controlled to ensure consistent performance.
| Element | Anuwai ya yaliyomo (%) | Function and Influence |
|---|---|---|
| Silicon (Na) | 0.40-0.80 | Forms the Mg₂Si strengthening phase with magnesium, increasing strength. |
| Chuma (Fe) | ≤0.70 | Kipengele cha uchafu, content must be controlled. |
| Shaba (Cu) | 0.15-0.40 | Improves strength and corrosion resistance. |
| Manganese (Mn) | ≤0.15 | Inaboresha muundo wa nafaka, improves strength. |
| Magnesiamu (Mg) | 0.80-1.20 | Forms the primary strengthening phase Mg₂Si with silicon. |
| Chromium (Cr) | 0.04-0.35 | Controls grain structure, improves corrosion resistance. |
| Zinki (Zn) | ≤0.25 | Kipengele cha uchafu, content must be controlled. |
| Titanium (Ya) | ≤0.15 | Inaboresha muundo wa nafaka, improves casting properties. |
| Vitu vingine | ≤0.05 (kila moja) ≤0.15 (Jumla) |
– |
| Alumini (Al) | Usawa | Msingi wa chuma. |
3. Comprehensive Physical and Mechanical Properties
Mali ya mwili:
- Msongamano: 2.70 g/cm³ (Takriban. 1/3 that of steel)
- Mbio za kuyeyuka: 582-652°C
- Uwezo maalum wa joto: 896 J/(kg · K) saa 20 ° C.
- Mgawo wa upanuzi wa mafuta: 23.6×10⁻⁶/K (20-100°C)
- Uendeshaji wa joto: 167 W/(m · k) (T6 hasira)
- Utaratibu wa umeme: 40-50% IACS (Kiwango cha kimataifa cha shaba kilichowekwa)
- Modulus ya Elasticity: 68.9 GPA
- Uwiano wa Poisson: 0.33
Sifa za Mitambo (Typical values for T6 temper):
| Mali | Kiwango cha Thamani | Kiwango cha mtihani |
|---|---|---|
| Nguvu ya Mkazo (Rm) | 310-380 MPa | ASTM E8/E8M |
| Nguvu ya Mavuno (Rp0.2) | 276-345 MPa | ASTM E8/E8M |
| Elongation (A50mm) | 10-17% | ASTM E8/E8M |
| Ugumu | 95-100 HB | ASTM E10 |
| Uchovu Nguvu | 96 MPa (5×10⁸ cycles) | – |
| Nguvu ya shear | 207 MPa | – |
4. Detailed Explanation of Heat Treatment Tempers
6061 aluminum alloy can achieve desired properties through different heat treatments:
| Temper Designation | Heat Treatment Process | Sifa Muhimu | Maombi ya kawaida |
|---|---|---|---|
| T4 | Solution heat-treated and naturally aged. | Nguvu ya wastani, umbile nzuri. | Components requiring subsequent forming. |
| T6 | Solution heat-treated and artificially aged. | Nguvu ya juu, good overall performance. | Sehemu za miundo, mechanical components. |
| T651 | Solution heat-treated, stress-relieved by stretching, and artificially aged. | Stress-relieved, excellent dimensional stability. | Precision machined parts. |
| T6511 | Slightly stress-relieved by stretching. | Reduced residual stress, improved flatness. | Karatasi nyembamba, precision components. |
| O | Annealed. | Laini, umbile bora. | Components requiring deep forming. |
5. Product Forms and Standard Specifications
Tunasambaza 6061 aluminum in various forms to meet different processing needs.
Aluminum Profiles (Extruded):
- Minimum Cross-Section Size: Circumcircle diameter up to 250mm.
- Wall Thickness Range: 0.8MM-12mm (depending on design).
- Urefu: Kiwango 6 mita, inayoweza kubinafsishwa.
- Tolerances: Comply with ASTM B221.
Aluminum Sheet/Coil:
- Unene anuwai: 0.3mm-150mm.
- Masafa ya Upana: 500mm-2500mm.
- Uso Maliza: F (as-fabricated), H112 (hot-finished), O (Annealed), T6/T651.
- Special Requests: Stress-relieved (stretcher leveled) plate available.
Aluminum Bar:
- Safu ya kipenyo: φ5mm-φ500mm.
- Maumbo: Mzunguko, square, hexagon.
- Supply Tempers: T6, T6511, O.
- Tolerance Grades: Hot-rolled, forged, precision drawn.
Aluminum Tube/Pipe:
- Outer Diameter Range: φ6mm-φ300mm.
- Wall Thickness Range: 0.5mm-25mm.
- Aina: Seamless, svetsade.
- Viwango: Comply with ASTM B210/B221.
6. Machining and Fabrication Properties
Uwezo:
- Machinability Rating: Nzuri (Takriban. 50% relative to Alloy 2011 rated at 100%).
- Recommended Cutting Speeds: HSS tools 60-90 m/yangu, Carbide tools 120-240 m/yangu.
- Uso Maliza: Good machined surface obtainable.
Weldability:
- Gas Tungsten/ Metal Inert Gas (TIG/MIMI) Kulehemu: Bora kabisa.
- Resistance Welding: Nzuri.
- Gas Welding: Haipendekezwi.
- Post-Weld Treatment: Can be re-heat-treated to restore properties.
- Filler Materials: 4043 au 5356 aluminum welding wire.
Uundaji:
- Cold Working: Nzuri (Best in annealed -O temper).
- Hot Working Temperature: 370-480°C.
- Radi ya chini ya bend: Takriban 1-2 times material thickness (depends on temper).
7. Surface Treatment Options
We can provide or recommend various surface treatments:
| Treatment Type | Process Description | Unene wa mipako / Athari | Viwango Vinavyotumika |
|---|---|---|---|
| Anodizing | Sulfuric acid anodizing, colorable. | 5-25µm | MIL-A-8625, ISO 7599 |
| Mipako ya ubadilishaji wa kemikali | Chromate or chrome-free treatment. | 0.3-1.0µm | MIL-DTL-5541 |
| Mipako ya poda | Electrostatic spray and bake curing. | 40-120µm | AAMA 2604/2605 |
| Sandblasting/Bead Blasting | Mechanical blasting for uniform matte finish. | Controllable surface roughness. | Customer specification. |
| Polishing/Brushing | Mechanical or chemical polishing. | Mirror or brushed finish. | Customer specification. |
8. Corrosion Resistance and Environmental Suitability
- Atmospheric Corrosion: Good resistance, especially in dry and rural environments.
- Stress Kutu Nyufa (SCC) Susceptibility: Good resistance in T6 temper.
- Marine Environment: Moderate resistance; significantly improved after anodizing.
- Acid/Alkali Environments: Resistant to weak acids/alkalis; corrodes in strong acids/alkalis.
- Contact with Other Metals: Avoid direct contact with dissimilar metals like copper, steel to prevent galvanic corrosion.
9. Quality Control and Certifications
We ensure all exported 6061 Aluminum Alloy complies with the following standards:
Udhibitisho wa nyenzo:
- Mill Test Certificate (MTC) provided for each batch.
- Chemical composition meets standard requirements.
- Mechanical property test report.
- Dimensional tolerance inspection report.
Ufuatiliaji:
- Complete production batch records.
- Heat treatment records.
- Inspection and test records retained for at least 10 miaka.
Third-Party Certification:
- Third-party inspection (k.m., SGS, BV, TUV) can be arranged.
- Complies with environmental directives like RoHS, FIKIA.
- Special certifications provided per customer request.
10. Packaging and Shipping Standards
We provide professional packaging to ensure product quality during international shipping.
| Aina ya Bidhaa | Standard Packing Method | Special Protection | Marking Requirements |
|---|---|---|---|
| Profiles/Bars | Wrapped in waterproof paper, bundled in wooden cases or metal racks. | End caps, moisture-proof paper. | Shipping mark, specs, uzani, batch no. |
| Sheets/Plates | Wooden pallets, separated by anti-rust paper, steel strapped. | Edge protectors, desiccant. | Lifting marks, fragile marks. |
| Precision Parts | Custom wooden crates, foam positioning, anti-rust treatment. | VCI paper, individual wrapping. | “This Side Up” marks, center of gravity marks. |
11. Global Application Cases
Yetu 6061 Aluminum Alloy has been successfully used in various international projects:
European Market:
- German Automotive Parts Manufacturer: Structural components for EV battery trays.
- Italian Industrial Equipment Company: High-precision machine tool rails and brackets.
- Dutch Bicycle Manufacturer: Tubing for high-end aluminum bicycle frames.
American Market:
- US Aerospace Tier-2 Supplier: Aircraft interior structural parts.
- Canadian Solar Company: Photovoltaic mounting system structures.
- Brazilian Construction Firm: Curtain wall system profiles.
Asian Market:
- Japanese Electronics Company: Frames for semiconductor equipment.
- Korean Marine Equipment Supplier: Ship structural components.
- Singapore Medical Device Company: Chassis for medical equipment.
Oceania Market:
- Australian Mining Equipment Manufacturer: Lightweight equipment parts.
- New Zealand Fishing Company: Structural parts for fishing vessels.
12. Material Selection and Design Advice
When to Choose 6061 Aloi ya Alumini:
- Requires a good strength-to-weight ratio.
- Requires good machinability and weldability.
- Requires moderate corrosion resistance.
- Cost-effectiveness is an important consideration.
- Requires surface treatments like anodizing.
When to Consider Other Alloys:
- Need higher strength: Consider 7075 au 2024.
- Need better corrosion resistance: Consider 5052 au 5083.
- Need better formability: Consider 3003 au 1100.
- Need higher temperature performance: Consider 2xxx series.
Design Considerations:
- Recommended minimum bend radius is 1.5-2 times material thickness.
- Strength is reduced in welded areas; consider appropriate reinforcement.
- Ensure proper heat dissipation during machining to avoid overheating material.
- Ensure thorough cleaning and degreasing before anodizing.
We understand that selecting the correct aluminum material is crucial to the success of your product. Aloi ya Alumini 6061, with its excellent overall performance and cost-effectiveness, is one of the most popular choices in global manufacturing. Mbali na 6061, we also supply other aluminum alloy series, pamoja na 5000 na 7000 mfululizo, to meet diverse application needs.
We Can Provide:
- Detailed Technical Data Sheets (TDS) and Material Safety Data Sheets (MSDS).
- Free samples for your testing and verification.
- Technical consultation for your specific application.
- Competitive FOB/CIF quotations.
- Flexible Minimum Order Quantities (Moq) and customization services.
For more information, to request samples, or to discuss your specific requirements, please feel free to contact our international sales team. We offer multilingual support to ensure smooth communication and will recommend the most suitable material specifications, Tempers, and heat treatment processes based on your application.