Hợp kim nhôm 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. Hợp kim nhôm 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, thông số kỹ thuật, 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:
- Trung Quốc: 6061 (GB/T 3190)
- Hoa Kỳ: 6061 (ASTM B221, ASTM B211)
- Châu Âu: EN AW-6061 (TRONG 573)
- Nhật Bản: A6061 (JIS H4000)
2. Detailed Chemical Composition Analysis
Thành phần hóa học của 6061 aluminum alloy is strictly controlled to ensure consistent performance.
| Yếu tố | Phạm vi nội dung (%) | Function and Influence |
|---|---|---|
| silicon (Và) | 0.40-0.80 | Forms the Mg₂Si strengthening phase with magnesium, increasing strength. |
| Sắt (Fe) | .70,70 | Yếu tố tạp chất, content must be controlled. |
| Đồng (cu) | 0.15-0.40 | Improves strength and corrosion resistance. |
| mangan (mn) | ≤0,15 | Tinh chỉnh cấu trúc hạt, improves strength. |
| magie (Mg) | 0.80-1.20 | Forms the primary strengthening phase Mg₂Si with silicon. |
| crom (Cr) | 0.04-0.35 | Controls grain structure, improves corrosion resistance. |
| kẽm (Zn) | ≤0,25 | Yếu tố tạp chất, content must be controlled. |
| titan (Của) | ≤0,15 | Tinh chỉnh cấu trúc hạt, improves casting properties. |
| Các yếu tố khác | ≤0,05 (mỗi) ≤0,15 (tổng cộng) |
– |
| Nhôm (Al) | Sự cân bằng | Kim loại cơ bản. |
3. Comprehensive Physical and Mechanical Properties
Tính chất vật lý:
- Tỉ trọng: 2.70 g/cm³ (Xấp xỉ. 1/3 that of steel)
- Phạm vi nóng chảy: 582-652°C
- Nhiệt dung riêng: 896 J/(kg·K) ở 20°C
- Hệ số giãn nở nhiệt: 23.6×10⁻⁶/K (20-100°C)
- Dẫn nhiệt: 167 với(m·K) (Tính khí T6)
- Tinh dân điện: 40-50% IACS (Tiêu chuẩn đồng ủ quốc tế)
- Mô đun đàn hồi: 68.9 GPa
- Tỷ lệ Poisson: 0.33
Tính chất cơ học (Typical values for T6 temper):
| Tài sản | Value Range | Tiêu chuẩn kiểm tra |
|---|---|---|
| Sức căng (Rm) | 310-380 MPa | ASTM E8/E8M |
| sức mạnh năng suất (Rp0,2) | 276-345 MPa | ASTM E8/E8M |
| kéo dài (A50mm) | 10-17% | ASTM E8/E8M |
| độ cứng | 95-100 HB | ASTM E10 |
| sức mạnh mệt mỏi | 96 MPa (5×10⁸ cycles) | – |
| sức mạnh cắt | 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 | Đặc điểm chính | Ứng dụng điển hình |
|---|---|---|---|
| T4 | Solution heat-treated and naturally aged. | Sức mạnh vừa phải, khả năng định dạng tốt. | Components requiring subsequent forming. |
| T6 | Solution heat-treated and artificially aged. | Cường độ cao, good overall performance. | Structural parts, mechanical components. |
| T651 | Solution heat-treated, stress-relieved by stretching, and artificially aged. | Stress-relieved, độ ổn định kích thước tuyệt vời. | Precision machined parts. |
| T6511 | Slightly stress-relieved by stretching. | Reduced residual stress, improved flatness. | Tấm mỏng, precision components. |
| Ô | ủ. | Mềm mại, khả năng định dạng tuyệt vời. | Components requiring deep forming. |
5. Product Forms and Standard Specifications
Chúng tôi cung cấp 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).
- Chiều dài: Tiêu chuẩn 6 mét, tùy chỉnh.
- Tolerances: Comply with ASTM B221.
Aluminum Sheet/Coil:
- Phạm vi độ dày: 0.3mm-150mm.
- Phạm vi chiều rộng: 500mm-2500mm.
- Hoàn thiện bề mặt: F (as-fabricated), H112 (hot-finished), Ô (ủ), T6/T651.
- Special Requests: Stress-relieved (stretcher leveled) plate available.
Aluminum Bar:
- Phạm vi đường kính: φ5mm-φ500mm.
- Hình dạng: Tròn, square, hexagon.
- Supply Tempers: T6, T6511, Ô.
- Tolerance Grades: Hot-rolled, forged, precision drawn.
Aluminum Tube/Pipe:
- Outer Diameter Range: φ6mm-φ300mm.
- Wall Thickness Range: 0.5mm-25mm.
- Types: Seamless, hàn.
- Tiêu chuẩn: Comply with ASTM B210/B221.
6. Machining and Fabrication Properties
khả năng gia công:
- Machinability Rating: Tốt (Xấp xỉ. 50% relative to Alloy 2011 rated at 100%).
- Recommended Cutting Speeds: HSS tools 60-90 tôi/của tôi, Carbide tools 120-240 tôi/của tôi.
- Hoàn thiện bề mặt: Good machined surface obtainable.
khả năng hàn:
- Gas Tungsten/ Metal Inert Gas (TIG/ME) hàn: Xuất sắc.
- Resistance Welding: Tốt.
- Gas Welding: Không được đề xuất.
- Post-Weld Treatment: Can be re-heat-treated to restore properties.
- Filler Materials: 4043 hoặc 5356 aluminum welding wire.
định dạng:
- Cold Working: Tốt (Best in annealed -O temper).
- Hot Working Temperature: 370-480°C.
- Bán kính uốn cong tối thiểu: Khoảng 1-2 times material thickness (depends on temper).
7. Surface Treatment Options
We can provide or recommend various surface treatments:
| Treatment Type | Mô tả quy trình | Độ dày lớp phủ / Tác dụng | Applicable Standards |
|---|---|---|---|
| anốt hóa | Sulfuric acid anodizing, colorable. | 5-25ừm | SỮA-A-8625, ISO 7599 |
| Lớp phủ chuyển hóa hóa học | Chromate or chrome-free treatment. | 0.3-1.0ừm | MIL-DTL-5541 |
| sơn tĩnh điện | Electrostatic spray and bake curing. | 40-120ừm | AMAMA 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 Corrosion Cracking (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:
Chứng nhận vật chất:
- Giấy chứng nhận kiểm tra nhà máy (MTC) provided for each batch.
- Chemical composition meets standard requirements.
- Mechanical property test report.
- Dimensional tolerance inspection report.
Truy xuất nguồn gốc:
- Complete production batch records.
- Heat treatment records.
- Inspection and test records retained for at least 10 năm.
Third-Party Certification:
- Third-party inspection (ví dụ., SGS, BV, TUV) can be arranged.
- Complies with environmental directives like RoHS, VỚI TỚI.
- Special certifications provided per customer request.
10. Packaging and Shipping Standards
We provide professional packaging to ensure product quality during international shipping.
| Loại sản phẩm | Standard Packing Method | Special Protection | Marking Requirements |
|---|---|---|---|
| Profiles/Bars | Wrapped in waterproof paper, bundled in wooden cases or metal racks. | End caps, giấy chống ẩm. | Shipping mark, specs, cân nặng, 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
Của chúng tôi 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 Hợp kim nhôm:
- 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: Coi như 7075 hoặc 2024.
- Need better corrosion resistance: Coi như 5052 hoặc 5083.
- Need better formability: Coi như 3003 hoặc 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. Hợp kim nhôm 6061, with its excellent overall performance and cost-effectiveness, is one of the most popular choices in global manufacturing. Ngoài ra 6061, we also supply other aluminum alloy series, bao gồm 5000 Và 7000 loạt, 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, nóng nảy, and heat treatment processes based on your application.