Chalco's aluminum round bars are well-known for their lightweight strength, corrosion resistance, and excellent thermal conductivity, making them an ideal choice for aerospace, automotive, construction, and various industrial manufacturing applications. We offer a wide range of in-stock standard alloys, including 2024, 5A06, 5052, 6061, 6063, 6082, and 7075, to meet the performance requirements of different engineering projects.
Our aluminum round bars are available in standard diameters from 5mm to 420mm, with a maximum diameter of up to 600mm. Standard lengths include 2 meters, 3 meters, and 6 meters, and we offer custom cutting services to meet your specific needs.Quick Quote
Whether you're choosing based on alloy, size, or manufacturing process, we provide high-quality aluminum round bars made by extrusion, cold working, or forging, ensuring each product precisely meets your project requirements.
Minimum Order Quantity (MOQ): 200kg
In-stock inventory: Ships within 1 week after customs clearance
- Choose by Alloy
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Choose by Size
Metric sizes
Imperial sizes
Custom cut-to-length
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Choose by Type
Extruded aluminum round bar
Cold Finished aluminum bar
Forged aluminum round bar
Cast aluminum round bar
Specialty aluminum round bar
With our full range of inventory and flexible customization services, we are committed to providing each customer with the highest-quality aluminum round bars and tailored solutions. Contact us today for a detailed quote and personalized support to make your project more competitive! Free sample
Choose Aluminum Round Bar by Alloy
Structural Aluminum Alloys
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6061 Aluminum Round Bar O, T4, T6, T651
Excellent balance of strength and corrosion resistance, ideal for construction, transportation, and general structural components.
ASTM B221 AMS-QQ-A-200/8 AMS-QQ-A-225/8 -
6063 Aluminum Round Bar O, T4, T6
Superior surface finish and outstanding corrosion resistance, widely used in architectural decoration, window frames, and lightweight structures.
ASTM B221 AMS-QQ-A-200/9 -
6005 Aluminum Round Bar T6, T651
Offers higher rigidity, suitable for heavy load-bearing structures and mechanical parts.
ASTM B221 -
6082 Aluminum Round Bar T6, T651
Excellent performance in high-load and precision applications, featuring high rigidity and stability.
ASTM B221
High-Strength Aluminum Alloys
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7075 Aluminum Round Bar T6, T651
One of the strongest aluminum bars, widely used in aerospace and high-load structures, with slightly reduced corrosion resistance.
ASTM B221 AMS-QQ-A-200/11 AMS-QQ-A-225/9 -
2024 Aluminum Round Bar T3, T4, T6
Suitable for aerospace components and high-performance structures requiring high tensile and fatigue strength.
ASTM B221 AMS-QQ-A-200/3 AMS-QQ-A-225/6 -
2014 Aluminum Round Bar T6, T651
Combines high strength with excellent machinability, ideal for various industrial applications.
ASTM B221 AMS-QQ-A-200/2 AMS-QQ-A-225/4 -
7050 Aluminum Round Bar T7451, T7651
Known for exceptional tensile and fatigue strength, featuring enhanced crack resistance and dimensional stability.
ASTM B247
Corrosion-Resistant Aluminum Alloys
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3003 Aluminum Round Bar O, H12, H14, H16
Noted for excellent corrosion resistance and good workability, suitable for chemical equipment, electrical uses, and light structures.
ASTM B221 AMS-QQ-A-200/1 AMS-QQ-A-225/2 -
Outstanding resistance to corrosion in harsh environments, used in marine structures and chemical equipment.
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5083 Aluminum Round Bar O, H112
Offers excellent corrosion resistance and impact toughness, widely used in shipbuilding and marine engineering.
ASTM B221 AMS-QQ-A-200/4 -
5052 Aluminum Round Bar O, H112
High strength, excellent corrosion resistance, and superior workability—perfect for marine, aerospace, and structural applications.
ASTM B221 AMS-QQ-A-200/5
Free-Cutting Alloy
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2011 Aluminum Round Bar T3, T6
Outstanding machinability and surface finish, making it the top choice for precision turning and CNC applications.
ASTM B211 AMS 4164 EN AW-2011 -
2017 Aluminum Round Bar T4, T451, T6
Offers excellent fatigue resistance and is commonly used in rivets, aircraft fittings, and transport components.
ASTM B211 AMS 4118 EN AW-2017
High-Temperature Wear-Resistant Alloys
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Maintains high strength and wear resistance at elevated temperatures, ideal for aircraft engines and high-temperature structures.
ASTM B247 AMS 4132 -
Renowned for low thermal expansion and thermal stability, widely used in precision casting and high-temp processing.
ASTM B247 AMS 4319 -
Suitable for high-temperature welding and structural aerospace/industrial applications, ensuring weld joint integrity.
ASTM B221 ASTM B211
Special-Purpose Alloys
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6951 Aluminum Round Bar T42, T62
Designed for brazing and special joining, ensuring reliable welds and structural integrity.
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Meets high requirements for heat resistance, wear resistance, and machinability, used in high-end custom projects.
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Combines excellent machinability and structural properties, suitable for precision custom components.
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1100 Aluminum Round Bar O, H12, H14
Pure aluminum with excellent electrical conductivity and ductility, ideal for electrical parts and lightweight structures.
Aluminum Round Bars by Category
Extruded Aluminum Round Bars
Extruded aluminum round bars are produced by forcing aluminum through a die at high temperatures, ensuring excellent consistency in cross-sectional dimensions and shapes. Ideal for mass production, they offer smooth surfaces and dimensional stability.
Contact us nowAlloys: 3003, 2014, 2024, 5083, 5086, 5454, 5456, 6061, 6063, 6066, 7075, 7178
Diameter: 5-420mm
Length: 2m, 3m, 6m
Standards: AMS-QQ-A-200, ASTM B221
Features
- High Production Efficiency: The extrusion process enables continuous production, improving efficiency and reducing costs.
- Consistent Cross-Section: Mold shaping ensures tight tolerances and uniform profiles, ideal for precision engineering.
- Smooth Surface Finish: Controlled forming parameters result in a cleaner surface, reducing the need for post-processing.
- High Flexibility: Custom diameters and shapes are possible by adjusting die design and process settings.
- High Material Utilization: Minimizes scrap generation, aligning with energy-saving and environmental goals.
Cold-Finished Aluminum Round Bars
Cold-finished aluminum round bars are processed through cold drawing or cold rolling based on pre-extruded bars. These methods significantly improve dimensional accuracy and surface quality, perfect for precision manufacturing.
Contact us nowAlloys: 1100, 3003, 2011, 2014, 2017, 2024, 5052, 6061, 7075, 6262
Diameter: 5-220mm
Length: 2m, 3m, 6m
Standards: ASTM B211, AMS-QQ-A-225
Features
- High Precision: Cold working reduces dimensional tolerances to meet tight precision machining standards.
- Superior Surface Finish: Cold drawing enhances surface smoothness, reducing the need for finishing.
- Work Hardening Effect: Improves hardness and wear resistance, suitable for heavy-load applications.
- Stable and Consistent: Rigid cold processing ensures uniform quality and dimensional stability.
- Wide Application Range: Ideal for electronics, precision components, and high-end industrial uses.
Specialty Aluminum Round Bars
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Forged Aluminum Round Bars
Diameter: ≤1000mm
Forged aluminum round bars are enhanced through high-temperature forging, improving internal structure and mechanical properties. This process increases material density and impact resistance, making them ideal for critical structural parts that require high toughness and fatigue resistance.
ASTM B247 -
Cast Aluminum Round Bars
Diameter: ≤1350mm
Also known as aluminum billets, cast aluminum round bars are formed by pouring molten aluminum into round molds. They are suitable for large-diameter or special alloy products. The surface may be rough and is typically used as raw material for extrusion or machining.
EN 573 -
Free-Cutting Aluminum Round Bars
Alloys: 2011, 2007, 2017, 6062, 6262, 6023
Designed for efficient CNC machining, free-cutting aluminum round bars are optimized in chemical composition and heat treatment to ensure lower tool wear and higher cutting efficiency.
ASTM B221 -
Polished Aluminum Round Bars
Finished with fine mechanical polishing and surface treatment, these bars present a mirror-like smooth finish while maintaining high strength. They are commonly used in decorative components and precision equipment requiring superior surface quality.
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Precision Ground Aluminum Round Bars
Precisely ground and polished, these bars feature diameter tolerance below -0.02mm, straightness less than 0.2mm/m, and roundness of 0.005mm. With excellent material consistency and double-ended chamfering, they ensure smooth processing without jamming, ideal for Swiss-type CNC machines with spindle speeds ≥8000 RPM.
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Large Diameter Aluminum Round Bars
Maximum diameter up to 1350mm. Manufactured through casting or forging, they are used in structural components that bear heavy loads in fields such as aerospace, nuclear power, military, and national defense.
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Small Diameter Aluminum Round Bars
Diameter range: 5–50mm. These bars are ideal for precision parts, electronic devices, and micro-mechanical manufacturing, where dimensional accuracy and surface finish are critical for high-precision applications.
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Solid Aluminum Round Bars
Solid aluminum round bars are traditional profiles suitable for most structural and mechanical applications. The solid core ensures uniform physical properties throughout the material.
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Hollow Aluminum Round Bars
Featuring a hollow design, these bars significantly reduce weight while maintaining high strength. They are suitable for applications requiring lightweight structures with structural support, such as in the aerospace and automotive sectors.
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Swiss-Type Aluminum Round Bars
Specifically engineered for high-precision machine tools, these bars are used in spindles, transmission systems, and other critical parts, offering both high strength and excellent dimensional stability and wear resistance during processing.
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Bent Aluminum Round Bars
Bent aluminum round bars are processed with pre-designed bending to achieve specific curvature and arc, fulfilling special structural or decorative needs. Formed after initial shaping, they ensure uniform curvature and precise angles.
Select Aluminum Round Bars by Size
Chalco’s aluminum round bars are manufactured to international standards and come in a wide range of sizes to suit everything from precision equipment to large-scale engineering projects. Whether you prefer metric or imperial measurements, we offer precise specifications to match your needs. Standard lengths and custom-cut services are available to support the efficient execution of your projects.
Metric Sizes
- Outer Diameter: 5 – 420 mm
- Standard Lengths: 2 m, 3 m, 6 m (custom cuts available)
- Tolerance: Standard cut tolerance approx. ±6 mm; custom cut accuracy up to ±1.5 mm (approx. ±1/16 inch)
Popular Sizes Available
- 5mm aluminium round bar
- 6mm aluminium round bar
- 8mm aluminium round bar
- 10mm aluminium round bar
- 12mm aluminium round bar
- 16mm aluminium round bar
- 20mm aluminium round bar
- 22mm aluminium round bar
- 25mm aluminium round bar
- 30mm aluminium round bar
- 40mm aluminium round bar
- 50mm aluminium round bar
- 60mm aluminium round bar
- 100mm aluminium round bar
- 200mm aluminium round bar
Imperial Sizes
- Outer Diameter: 1/4" to 12"; standard sizes include 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 6", 8"
- Wall Thickness Range: 0.035" to 2"; supports custom thin-wall or thick-wall options
- Standard Lengths: 6 ft, 8 ft, 12 ft, 20 ft, 24 ft, with custom lengths up to 288 inches
- Size Tolerance: Standard ±1/4", cutting precision ±1/16"
Popular Sizes Available
- 1/2" aluminium round bar
- 3/4" aluminium round bar
- 1" aluminium round bar
- 1-1/4" aluminium round bar
- 1-1/2" aluminium round bar
- 2" aluminium round bar
- 2-1/2" aluminium round bar
- 3" aluminium round bar
- 4" aluminium round bar
- 5" aluminium round bar
- 6" aluminium round bar
- 8" aluminium round bar
Whether you're sourcing from stock or requesting a custom specification, we offer fast response and professional service to help you find the best-fit aluminum round bar solution for your project. Contact us for a personalized quote or click the size options to view more details.Quick Quote
Surface Finishing & Deep Processing of Aluminum Round Bars
To enhance both the performance and appearance of aluminum round bars across various applications, we offer a wide range of surface treatments and deep processing services. These processes improve corrosion resistance, aesthetic appeal, and dimensional precision, offering a one-stop solution for complex project requirements.
Surface Finishing

Anodizing
An electrochemical treatment that forms a dense oxide film on the aluminum surface, significantly improving corrosion resistance and wear resistance, while enhancing the product's texture and appearance.

Polishing
Mechanical or chemical polishing refines the surface to a mirror-like finish, improving both assembly precision and visual appeal.

Brushed Finish
Creates fine, uniform lines on the aluminum surface for a distinctive matte texture. Offers effective anti-fingerprint properties and partial corrosion resistance.
Deep Processing
CNC Turning
High-precision machining using CNC lathes to produce precision shafts, bushings, threads, and other complex parts with strict dimensional and shape tolerances.
Milling & Drilling
Advanced equipment is used for milling, drilling, and tapping, providing accurate cutting and assembly interfaces to meet high-precision machinery requirements.
Custom Cutting & Sawing
Offers standard and custom-length cutting services based on client needs. Cutting accuracy up to ±1/16 inch, ensuring dimensional compliance while reducing post-processing costs.
Welding & Assembly
Tailored for specific applications, this includes welding, joining, and assembly of aluminum materials to create integrated structures and complex components, enhancing performance and ease of installation.




Whether you need to enhance the surface finish of aluminum round bars or achieve high-precision machining, we provide tailored solutions to meet your specific project needs. Contact us today for a personalized quote and expert technical support!Quick Quote
Chalco Aluminum Round Bar Industry Solutions
Aerospace Industry Aluminum Round Bar Solutions
In the aerospace industry, materials must meet stringent requirements. Aluminum round bars, with their lightweight, high strength, and excellent corrosion resistance and fatigue performance, are the ideal choice for critical applications such as aircraft structures, engine components, and internal support systems.
- Recommended Alloys: 7075, 2024, 2618, 6061
- Product Types: Extruded Aluminum Round Bars, Cold Finished Aluminum Round Bars, Forged Aluminum Round Bars, Large Diameter Aluminum Round Bars
- Certifications: ISO 9001, AS9100, ASTM B221, ASTM B211, NADCAP HT, NADCAP NDT
- Partners: Boeing, Airbus, KLM Royal Dutch Airlines, Safran, and other approved suppliers; ultrasonic testing certification available
- Specific Applications: Aircraft fuselage structures and partitions, critical engine components, internal support parts, landing gear


Military Industry Aluminum Round Bar Solutions
Materials used in the defense industry must possess ultra-high strength, excellent fatigue resistance, and long-term stability, providing reliable support for military equipment and defense systems, ensuring safe and stable operation in extreme environments.
- Recommended Alloys: 7075, 7039, 5083
- Product Types: Extruded Aluminum Round Bars, Forged Aluminum Round Bars
- Certifications: MIL-DTL-46083, ASTM B221, ASTM B241, EN 755 (ultrasonic testing certification available)
- Specific Applications: Armored structural components, weapon system connectors, protective armor, support systems


Construction Industry Aluminum Round Bar Solutions
The construction industry requires materials that are both lightweight and high strength, with excellent corrosion resistance to meet the diverse needs of modern building structures and decorations.
- Recommended Alloys: 6061, 6063, 6005, 3003
- Product Types: Extruded Aluminum Round Bars, Small Diameter Aluminum Round Bars, Hollow Aluminum Round Bars
- Specific Applications: Structural support and frameworks, door and window frames, curtain wall frameworks, sunshade structure components, furniture frameworks


Automotive Industry Aluminum Round Bar Solutions
The automotive industry’s demand for lightweight and high-strength materials continues to grow. Aluminum round bars, with their excellent strength-to-weight ratio and superior machining performance, help reduce vehicle weight, enhance fuel efficiency, and ensure the impact resistance and long-term stability of automotive components.
- Recommended Alloys: 6061, 7075, 2024, 2618, 6066
- Product Types: Extruded Aluminum Round Bars, Cold Finished Aluminum Round Bars, Custom Cut Aluminum Round Bars
- Specific Applications: Body structural supports, engine components, transmission systems, wheel hubs, chassis components


Rail Transit Industry Aluminum Round Bar Solutions
Rail transit requires materials that are lightweight, high strength, and precise for key components such as train bodies, seat brackets, and connectors, improving the overall structural stability and ride comfort of rail vehicles.
- Recommended Alloys: 6005, 7005, 7075, 6082
- Product Types: Extruded Aluminum Round Bars, Cold Finished Aluminum Round Bars, Hollow Aluminum Round Bars, Solid Aluminum Round Bars
- Specific Applications: Seats, armrests, and interior components, structural supports, rail fittings, connectors


Electronics and Power Industry Aluminum Round Bar Solutions
In the electronics and power sectors, high thermal conductivity, good electrical conductivity, and precise machining performance are critical for material selection. Aluminum round bars, with excellent thermal conductivity and stable mechanical properties, are widely used in heat sinks, electrical components, and structural supports, ensuring efficient operation and energy optimization of devices.
- Recommended Alloys: 1100, 3003, 6061, 6063
- Product Types: Extruded Aluminum Round Bars, Solid Aluminum Round Bars
- Specific Applications: Heat sinks, electronic packaging components, electrical conductors, terminal blocks, motor housings, structural support assemblies


Why Choose Chalco as Your Aluminum Round Bar Supplier?
- Comprehensive Product Range: We offer a full range of aluminum round bars for structural, free-machining, high-strength, corrosion-resistant, and special-purpose applications. Diameters range from 5mm to 600mm, with standard lengths of 2m, 3m, and 6m. Custom sizes and specifications are also available to meet the diverse needs of various industries and engineering projects.
- Massive Inventory: With a stock capacity of tens of thousands of tons, we ensure fast response for bulk orders, on-time delivery, and minimized risk of project delays and production downtime.
- Strict Standard Certifications: Our products comply with international standards such as AMS and ASTM, and are certified under ISO, AS9100, and more. From raw materials to manufacturing, every step is strictly controlled to ensure top engineering quality.
- Expert After-Sales Service: Our professional technical team offers full support in consultation, material selection, and customization. Combined with a comprehensive after-sales service system, we ensure fast and efficient technical and logistics support throughout the usage process.
Contact us today to experience high-quality, full-range, and customized aluminum round bar solutions — delivering superior material performance and reliability for your projects!
Chalco can provide you the most comprehensive inventory of aluminum products and can also supply you customized products. Precise quotation will be provided within 24 hours.
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