Κράμα αργιλίου 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. Κράμα αργιλίου 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, προδιαγραφές, 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:
- Κίνα: 6061 (GB/T 3190)
- ΗΠΑ: 6061 (ASTM B221, ASTM B211)
- Ευρώπη: EN AW-6061 (ΣΕ 573)
- Ιαπωνία: A6061 (JIS H4000)
2. Detailed Chemical Composition Analysis
Η χημική σύνθεση του 6061 aluminum alloy is strictly controlled to ensure consistent performance.
| Στοιχείο | Εύρος περιεχομένου (%) | Function and Influence |
|---|---|---|
| Πυρίτιο (Και) | 0.40-0.80 | Forms the Mg₂Si strengthening phase with magnesium, increasing strength. |
| Σίδερο (Fe) | ≤0,70 | Στοιχείο ακαθαρσίας, content must be controlled. |
| Χαλκός (Cu) | 0.15-0.40 | Improves strength and corrosion resistance. |
| Μαγγάνιο (Mn) | ≤0.15 | Βελτιώνει τη δομή των κόκκων, improves strength. |
| Μαγνήσιο (Mg) | 0.80-1.20 | Forms the primary strengthening phase Mg₂Si with silicon. |
| Χρώμιο (Cr) | 0.04-0.35 | Controls grain structure, improves corrosion resistance. |
| Ψευδάργυρος (Zn) | ≤0,25 | Στοιχείο ακαθαρσίας, content must be controlled. |
| Τιτάνιο (Του) | ≤0.15 | Βελτιώνει τη δομή των κόκκων, improves casting properties. |
| Άλλα στοιχεία | ≤0.05 (κάθε) ≤0.15 (σύνολο) |
– |
| Αλουμίνιο (Ο Αλ) | Ισορροπία | Βασικό μέταλλο. |
3. Comprehensive Physical and Mechanical Properties
Φυσικές Ιδιότητες:
- Πυκνότητα: 2.70 g/cm³ (Περίπου. 1/3 that of steel)
- Εύρος τήξης: 582-652°C
- Ειδική Θερμοχωρητικότητα: 896 J/(kg·K) at 20°C
- Συντελεστής Θερμικής Διαστολής: 23.6×10⁻⁶/K (20-100°C)
- Θερμική αγωγιμότητα: 167 W/(m·K) (T6 ιδιοσυγκρασία)
- Ηλεκτρική αγωγιμότητα: 40-50% ΟΣΔΕ (International Annealed Copper Standard)
- Μέτρο Ελαστικότητας: 68.9 GPa
- Ο λόγος του Poisson: 0.33
Μηχανικές Ιδιότητες (Typical values for T6 temper):
| Ιδιοκτησία | Value Range | Πρότυπο δοκιμής |
|---|---|---|
| Αντοχή εφελκυσμού (Rm) | 310-380 MPa | ASTM E8/E8M |
| Ισχύς απόδοσης (Rp0.2) | 276-345 MPa | ASTM E8/E8M |
| Επιμήκυνση (A50 mm) | 10-17% | ASTM E8/E8M |
| Σκληρότητα | 95-100 HB | ASTM E10 |
| Δύναμη κόπωσης | 96 MPa (5×10⁸ cycles) | – |
| Δύναμη διάτμησης | 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 | Βασικά Χαρακτηριστικά | Τυπικές Εφαρμογές |
|---|---|---|---|
| Τ4 | Solution heat-treated and naturally aged. | Μέτρια δύναμη, καλή μορφοποίηση. | Components requiring subsequent forming. |
| Τ6 | Solution heat-treated and artificially aged. | Υψηλή δύναμη, good overall performance. | Δομικά μέρη, mechanical components. |
| T651 | Solution heat-treated, stress-relieved by stretching, and artificially aged. | Stress-relieved, εξαιρετική σταθερότητα διαστάσεων. | Precision machined parts. |
| T6511 | Slightly stress-relieved by stretching. | Reduced residual stress, improved flatness. | Λεπτό φύλλο, precision components. |
| Ο | Διαπυρακτομένος. | Μαλακός, εξαιρετική μορφοποίηση. | Components requiring deep forming. |
5. Product Forms and Standard Specifications
Προμηθευόμαστε 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).
- Μήκος: Πρότυπο 6 μέτρα, προσαρμόσιμο.
- Tolerances: Comply with ASTM B221.
Aluminum Sheet/Coil:
- Φάσμα πάχους: 0.3mm-150mm.
- Εύρος πλάτους: 500mm-2500mm.
- Φινίρισμα Επιφανείας: φά (as-fabricated), H112 (hot-finished), Ο (διαπυρακτομένος), T6/T651.
- Special Requests: Stress-relieved (stretcher leveled) plate available.
Aluminum Bar:
- Diameter Range: φ5mm-φ500mm.
- Σχήματα: Γύρω, square, hexagon.
- Supply Tempers: Τ6, T6511, Ο.
- Tolerance Grades: Hot-rolled, forged, precision drawn.
Aluminum Tube/Pipe:
- Outer Diameter Range: φ6mm-φ300mm.
- Wall Thickness Range: 0.5mm-25mm.
- Types: Seamless, συγκολλημένος.
- Πρότυπα: Comply with ASTM B210/B221.
6. Machining and Fabrication Properties
μηχανική ικανότητα:
- Machinability Rating: Καλός (Περίπου. 50% relative to Alloy 2011 rated at 100%).
- Recommended Cutting Speeds: HSS tools 60-90 m/my, Carbide tools 120-240 m/my.
- Φινίρισμα Επιφανείας: Good machined surface obtainable.
Συγκολλησιμότητα:
- Gas Tungsten/ Metal Inert Gas (TIG/ME) Συγκόλληση: Εξοχος.
- Resistance Welding: Καλός.
- Gas Welding: Δεν συνιστάται.
- Post-Weld Treatment: Can be re-heat-treated to restore properties.
- Filler Materials: 4043 ή 5356 aluminum welding wire.
Σχηματισιμότητα:
- Cold Working: Καλός (Best in annealed -O temper).
- Hot Working Temperature: 370-480°C.
- Ελάχιστη ακτίνα κάμψης: Περίπου 1-2 times material thickness (depends on temper).
7. Surface Treatment Options
We can provide or recommend various surface treatments:
| Treatment Type | Περιγραφή διαδικασίας | Πάχος επίστρωσης / Αποτέλεσμα | Ισχύοντα Πρότυπα |
|---|---|---|---|
| Ανοδίωση | Sulfuric acid anodizing, colorable. | 5-25μm | MIL-A-8625, ISO 7599 |
| Επικάλυψη χημικής μετατροπής | Chromate or chrome-free treatment. | 0.3-1.0μm | MIL-DTL-5541 |
| Επικάλυψη σε σκόνη | Electrostatic spray and bake curing. | 40-120μm | 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:
Υλικά πιστοποίηση:
- Mill Test Certificate (MTC) provided for each batch.
- Chemical composition meets standard requirements.
- Mechanical property test report.
- Dimensional tolerance inspection report.
Ιχνηλασιμότητα:
- Complete production batch records.
- Heat treatment records.
- Inspection and test records retained for at least 10 χρόνια.
Third-Party Certification:
- Third-party inspection (Π.χ., SGS, BV, TUV) can be arranged.
- Complies with environmental directives like RoHS, ΕΚΤΑΣΗ.
- Special certifications provided per customer request.
10. Packaging and Shipping Standards
We provide professional packaging to ensure product quality during international shipping.
| Τύπος προϊόντος | Standard Packing Method | Special Protection | Marking Requirements |
|---|---|---|---|
| Profiles/Bars | Wrapped in waterproof paper, bundled in wooden cases or metal racks. | End caps, αδιάβροχο χαρτί. | Shipping mark, specs, βάρος, 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
Μας 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 Κράμα αργιλίου:
- 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: Θεωρώ 7075 ή 2024.
- Need better corrosion resistance: Θεωρώ 5052 ή 5083.
- Need better formability: Θεωρώ 3003 ή 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. Κράμα αργιλίου 6061, with its excellent overall performance and cost-effectiveness, is one of the most popular choices in global manufacturing. Εκτός από 6061, we also supply other aluminum alloy series, συμπεριλαμβανομένου 5000 και 7000 σειρά, 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 (Μούβ) 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, ιδιοσυγκρασίες, and heat treatment processes based on your application.