6061 aluminum coil is a heat-treatable alloy coil product supplied in continuous rolled form, offering excellent strength, corrosion resistance, and formability. The 6061-T6 temper provides 290 MPa tensile strength, making it suitable for structural, automotive, and industrial applications.
HXM Aluminum supplies 6061 aluminum coils in thicknesses from 0.2mm to 8mm, with coil weights up to 5 tons. Standard coil inner diameters include 508mm and 610mm, with outer diameters customized to customer requirements. Full mill certification to ASTM B209 is provided.
Our coil processing capabilities include slitting, cut-to-length, and recoiling to your exact specifications. Contact us with your coil dimensions for a competitive quotation.
Quick Specifications
| Specification | Details |
|---|---|
| Alloy | 6061 (AlMg1SiCu) |
| Temper | T6, T4, O, H112 |
| Standard | ASTM B209, EN 573-3 |
| Thickness | 0.2mm – 8mm |
| Width | 100mm – 2000mm |
| Coil ID | 508mm / 610mm (custom available) |
| Coil Weight | Up to 5,000 kg per coil |
| Surface | Mill finish, brushed, anodized |
| Processing | Slitting, cut-to-length, recoiling |
6061 aluminum coils are available in a range of dimensions optimized for continuous processing applications:
| Coil Type | Thickness | Width | Max Weight |
|---|---|---|---|
| Thin Coil | 0.2mm – 1.0mm | 100mm – 1500mm | 3,000 kg |
| Standard Coil | 1.0mm – 4.0mm | 500mm – 2000mm | 5,000 kg |
| Heavy Coil | 4.0mm – 8.0mm | 800mm – 2000mm | 5,000 kg |
Coil ID and OD: Standard inner diameter (ID) is 508mm or 610mm to fit standard uncoiling equipment. Outer diameter (OD) is calculated based on thickness, width, and coil weight. Custom ID sizes are available upon request to match your decoiler specifications.
What Are 6061 Aluminum Coils?
6061 aluminum coils are continuous rolled aluminum products wound on a mandrel, made from 6061 aluminum alloy (AlMg1SiCu) — a heat-treatable structural alloy belonging to the 6000-series (Al-Mg-Si-Cu) family. Supplied in thicknesses from 0.2mm to 8mm and widths from 100mm to 2000mm, 6061 coils are produced by hot rolling ingot into transfer slab, then cold rolling to final gauge, followed by coiling for continuous processing.
The alloy is supplied in three primary tempers: T6 (solution heat-treated + artificially aged, 290 MPa tensile strength — highest strength), T4 (solution heat-treated only, naturally aged — moderate strength with good formability), and O (fully annealed — maximum formability for stamping and deep drawing, can be subsequently heat-treated to T6). 6061 coils offer excellent weldability (TIG, MIG, FSW), good corrosion resistance, and superior machinability compared to 5000-series alloys. The coil format enables high-speed stamping, roll forming, and continuous manufacturing — making 6061 aluminum coils the preferred material for automotive stamping, HVAC heat exchangers, electronic enclosures, and structural roll-formed profiles.
HXM Aluminum is a manufacturer and supplier of 6061 aluminum coils certified to ASTM B209 standards, serving 60+ countries with 15+ years of manufacturing experience and 50,000+ tons annual output.
Chemical Composition
For continuous-rolled 6061 aluminum coils, the chemical composition per ASTM B209 and EN 573-3 must remain uniform throughout the entire coil length to ensure consistent temper response and mechanical properties after slitting and cut-to-length processing. The composition is verified at the melt stage and re-checked on coil samples to guarantee homogeneity across coil weights up to 5,000 kg.
| Element | Min (%) | Max (%) |
|---|---|---|
| Silicon (Si) | 0.40 | 0.80 |
| Iron (Fe) | – | 0.70 |
| Copper (Cu) | 0.15 | 0.40 |
| Manganese (Mn) | – | 0.15 |
| Magnesium (Mg) | 0.80 | 1.20 |
| Chromium (Cr) | 0.04 | 0.35 |
| Zinc (Zn) | – | 0.25 |
| Titanium (Ti) | – | 0.15 |
| Others (each) | – | 0.05 |
| Aluminum (Al) | – | Remainder |
Composition notes for coils: Uniform magnesium distribution is essential for coil products because Mg2Si precipitation during artificial aging must be consistent from the coil head to tail. Chromium acts as a grain refiner during the hot rolling process, preventing coarse grain structures that cause orange-peel defects during subsequent stamping. Titanium is added as a grain refiner during casting to ensure fine, uniform equiaxed grains throughout the coil.
Mechanical Properties
Mechanical properties are tested per ASTM B209 and ASTM B557, verified at coil head, middle, and tail to ensure uniformity across the entire coil length. O temper provides maximum formability for stamping; T6 provides ready-to-use high strength.
| Property | T6 | T4 | O (Annealed) | H112 |
|---|---|---|---|---|
| Tensile Strength (MPa) | 290 | 210 | 150 | 170 |
| Yield Strength (MPa) | 240 | 145 | 83 | 110 |
| Elongation (% in 50mm) | 10 | 16 | 18 | 14 |
| Brinell Hardness (HB) | 95 | 65 | 30 | 45 |
| Shear Strength (MPa) | 185 | 130 | 103 | 115 |
| Fatigue Strength (MPa, 5×10^8) | 96 | 62 | 48 | 55 |
| Elastic Modulus (GPa) | 68.9 | 68.9 | 68.9 | 68.9 |
Coil-Specific Mechanical Considerations
Temper Uniformity: Inter-coil tensile strength variation controlled within ±10 MPa, verified at coil head, middle, and tail.
Coil Set (Residual Curvature): O temper coils have minimal coil set; T6 temper may require leveling before processing; T4 offers a compromise between strength and low residual curvature.
Work Hardening at Slit Edges: Slitting can increase edge hardness by 10-15 HB. For applications requiring uniform edge properties, post-slit annealing is available.
Springback Control: T6 coils exhibit higher springback during forming; O temper provides minimal springback for complex geometries.
Temper Selection Guide — Which Temper Should You Choose?
Choosing the right temper is critical for coil processing. Use this guide to select the optimal temper based on your manufacturing process and performance requirements.
| Temper | Tensile (MPa) | Best For | Key Characteristic |
|---|---|---|---|
| T6 | 290 | Finished coil, structural roll-forming, truck/trailer flooring | Solution heat-treated + artificially aged. Highest strength. May require leveling before processing. Higher springback during forming. |
| T4 | 210 | Moderate forming + post-forming aging, automotive stamping | Solution heat-treated only (naturally aged). Good balance of strength and formability. Can be aged to T6 after forming. Lower coil set than T6. |
| O (Annealed) | 150 | Deep drawing, complex stamping, roll forming before heat treatment | Fully annealed — softest condition. Maximum formability, minimal springback. Can be solution heat-treated and aged to T6 after forming operations. |
| H112 | 170 | Structural applications, marine, general fabrication | As-extruded/rolled temper with minimum specified mechanical properties. Lower strength than T6 but economical for non-critical structural use. |
Quick recommendation:
For stamping/forming then heat treat → O temper.
For moderate forming + aging → T4.
For finished high-strength coil → T6.
For economical structural → H112.
Product Features
High Strength in Coil Form: 6061-T6 coil delivers 290 MPa tensile strength — significantly higher than 3003 (145 MPa) or 5052 (180 MPa) in comparable thickness ranges.
Heat-Treatable: Unlike 5xxx-series alloys, 6061 can be solution heat-treated and aged. Form in O temper, then age to T6 for full strength — ideal for complex stamped parts requiring high final strength.
Excellent Formability (O Temper): Annealed 6061 coil can be stamped, deep drawn, roll formed, and bent into complex shapes before heat treatment.
Superior Corrosion Resistance: Mg-Si alloy composition provides excellent resistance to atmospheric corrosion — suitable for outdoor and marine-adjacent applications.
Good Weldability: Compatible with standard TIG (GTAW) and MIG (GMAW) welding processes. Weld strength reaches 70% of base metal in T6 condition.
Continuous Processing Capability: Coil format supports high-speed stamping, roll forming, and continuous manufacturing — reducing material waste and production costs vs. cut sheet.
Temper Uniformity Guarantee: Inter-coil tensile strength variation controlled within ±10 MPa, verified at coil head, middle, and tail for consistent stamping performance.
Applications
6061 aluminum coils serve applications that benefit from continuous feed processing and high strength:
Heat exchangers: Fin stock and tube stock for HVAC and industrial heat exchangers requiring thermal conductivity and corrosion resistance.
Automotive stamping: Body panels, structural reinforcements, and chassis components stamped from coil feed in volume production.
Roll forming: Structural profiles, roofing sheets, and architectural cladding produced by continuous roll forming from coil.
Trailer and truck flooring: High-strength coil products for transportation flooring and wall panels.
Electronics housing: Enclosures and heat sink components stamped from 6061 coil for thermal management.
General stamping: Custom stamped parts across diverse manufacturing industries.
Recommended temper by application: O temper for stamping and forming operations (post-forming heat treatment required for T6 strength); T4 for moderate forming with subsequent aging; T6 for finished coil products requiring maximum strength.
Why Choose HXM Aluminum
15+ Years Manufacturing Experience: Established aluminum coil production facility with mature cold rolling and heat treatment capabilities.
60+ Countries Exported: Global supply network serving South America, Europe, Southeast Asia, Middle East, and Australia.
50,000+ Tons Annual Output: Large-scale production capacity ensuring competitive pricing and reliable delivery schedules.
Flexible Coil Specifications: Custom thickness (0.2-8mm), width (20-2000mm via slitting), coil ID (300-750mm), and coil weight (100-5,000kg).
Full Certifications: ISO 9001 quality management, ASTM B209 product standards, EN 10204 3.1 MTC for every shipment.
In-House Processing: Slitting, cut-to-length, recoiling, and surface treatment — all under one roof for quality control and cost efficiency.
24-Hour Quote Response: Fast quotation turnaround with detailed pricing including material, processing, and freight.
HXM Aluminum provides comprehensive coil processing services:
Slitting: Precision coil slitting to custom widths from 20mm to 2000mm with +/-0.1mm width tolerance.
Cut-to-length: Coil-to-sheet cutting with flatness control and stacking to customer-specified lengths.
Recoiling: Recoiling to custom coil weights and ID sizes to match customer uncoiling equipment.
Surface treatment: Brushing, anodizing, and PVC film application in coil form.
Custom packaging: Eye-to-sky or eye-to-wall coil packaging with steel straps and moisture protection for export.
Frequently Asked Questions
What is the difference between 6061 aluminum coil and sheet?
6061 aluminum coil is supplied in continuous rolled form wound onto a mandrel, while sheet is cut to flat pieces. Coils are preferred for high-volume stamping, roll forming, and continuous processing applications. Sheets are more suitable for custom cutting and CNC processing. HXM Aluminum supplies both forms with identical alloy specifications. See our 6061 aluminum sheets page for sheet specifications.
What coil ID (inner diameter) sizes are available?
Standard coil inner diameters are 508mm (20 inches) and 610mm (24 inches), which fit most standard decoiling equipment. Custom ID sizes from 300mm to 750mm can be provided upon request to match your specific uncoiler mandrel. The coil OD (outer diameter) is determined by thickness, width, and coil weight.
What is the maximum coil weight for 6061 aluminum coils?
HXM Aluminum supplies 6061 aluminum coils up to 5,000 kg (5 metric tons) per coil. The maximum weight depends on thickness, width, and handling equipment limitations at the destination. Lighter coils (500-2,000 kg) are available for customers with limited lifting capacity.
Can 6061 aluminum coil be stamped and formed?
Yes, 6061 aluminum in O (annealed) temper has excellent formability and can be stamped, deep drawn, and roll formed into complex shapes. After forming, the parts can be solution heat-treated and aged to T6 temper to achieve full strength (290 MPa). T4 temper offers moderate formability with subsequent natural aging.
How does coil temper uniformity affect stamping quality?
Temper uniformity across the coil is critical for consistent stamping performance. HXM Aluminum controls coil-to-coil tensile strength variation within +/-10 MPa, verified by testing at the coil head, middle, and tail. Non-uniform temper can cause inconsistent spring-back, dimensional variation, and cracking during forming. For critical stamping applications, we provide per-coil mechanical test reports.
Can I order 6061 aluminum coil in custom widths?
Yes, HXM Aluminum offers precision slitting service to cut coils to your exact width requirements, from 20mm minimum width. Slitting tolerance is +/-0.1mm for standard widths. Multiple slit coils can be produced from a single master coil, reducing material cost and waste.
What is coil set and how does it affect processing?
Coil set is the residual curvature that remains when strip is uncoiled from a coil. O temper 6061 coils exhibit minimal coil set, making them ideal for direct stamping. T6 temper coils may require leveling or flattening before processing. T4 temper offers a compromise between strength and reduced coil set. If your equipment lacks a leveler, we can supply leveled or flattened coil.
How do I request a quotation for 6061 aluminum coils?
Provide the following specifications: alloy/temper, thickness, width, coil ID, coil weight or OD, total quantity, surface finish, and delivery destination. HXM Aluminum will provide a quotation including unit price per kg, total weight, coil count, lead time, and shipping cost within 24 hours.
6061 vs 5052 aluminum coil — which should I choose?
Choose 6061 for applications requiring high strength (290 MPa T6) and post-forming heat treatment capability — it’s the only heat-treatable alloy in this comparison. Choose 5052 for applications requiring excellent formability in the as-supplied condition (5052 is not heat-treatable, 180 MPa tensile). 6061 is better for structural and high-strength stamping; 5052 is better for marine, fuel tanks, and complex deep drawing. See our 5052 aluminum coils for comparison.
Can you supply custom 6061 aluminum coil specifications?
Yes. We produce custom thicknesses (0.2-8mm), custom widths (20-2000mm via slitting), custom coil IDs (300-750mm), custom coil weights (100-5,000kg), and custom surface treatments. Minimum order quantity is 3,000 kg. Lead time is 15-25 working days for custom production, 7-12 days for slit-to-width from stock.
Request Your 6061 Aluminum Coil Quote Now
Ready to order 6061 aluminum coils for your production line? Include these details in your inquiry:
- Required information: Alloy/temper, thickness, width, coil ID, coil weight, total quantity, surface finish, delivery destination
- Quotation turnaround: Within 24 hours
Click “Get A Quote” to submit your coil specifications. Our team will confirm availability and provide a detailed quotation.
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