Cold Finished Aluminum Bar

Cold finished aluminum bar is a high-precision solid aluminum product manufactured through multi-pass cold drawing at room temperature. Compared with conventional extruded bars, it offers superior dimensional stability, straightness, and machining compatibility. It is widely used in aerospace, automation components, precision equipment, and other high-requirement manufacturing sectors.

• Precision Tolerances: Dimensional tolerance ±0.03 mm, roundness ≤0.01 mm — ideal for tight fits and automation.
• Excellent Straightness: ≤0.3 mm/m ensures stable machining and smooth feeding.
• Consistent Surface: Smooth, oxide-free finish supports anodizing, threading, and post-processing.
• High Machining Efficiency: Chamfered ends prevent jamming, reduce wear, and boost throughput.

Chalco offers one-stop cold finished aluminum bar solutions in alloys like 6061,6082,2011, 2024,7075, and more. Custom sizes and tempers are available for aerospace, precision machining, and high-spec production — ensuring accuracy, efficiency, and reliable delivery.

Chalco's hot-selling Precision Cold Drawn Aluminum Rod Bar

We stock a wide selection of cold finished aluminum bars that meet ASTM B211,AMS-QQ-A-225 standards, ready for immediate delivery. Available in multiple alloys and sizes with tight tolerances and excellent machinability for aerospace and precision manufacturing.

2024 Cold Finished Aluminum Bar in Stock

6061 Cold Finished Aluminum Bar in Stock

7075 Cold Finished Aluminum Bar in Stock

Looking for custom sizes or large-volume orders? Contact us for tailored solutions, fast delivery, and expert technical support.

Production process of precision cold drawing aluminum rod bar

• Raw Material Preparation: Select high-purity aluminum rod blanks to ensure they meet production standards and customer requirements.
• Extrusion: Use an extrusion machine to extrude the pre-treated aluminum rod blanks into a preliminary round cross-section. Extrusion helps improve the grain structure of the blanks, enhancing mechanical performance.
• Drawing: Continue to draw the aluminum rods to further enhance strength and hardness.
• Cold Drawing: Gradually reduce the temperature and stretch the extruded aluminum round bars using a cold drawing machine to decrease the diameter.
• Multiple Drawing Passes: Subject the cold-drawn aluminum rods to multiple drawing passes to further reduce the diameter, improving product density and strength.
• Straightening: Straighten the drawn aluminum rods to ensure their straightness and length meet standard requirements.
• Chamfering: Apply chamfering treatment to the aluminum rods, making them suitable for automatic feeding during machining without material jamming.
• Heat Treatment: Subject the precision-machined aluminum rods to heat treatment, including heating and cooling processes, to adjust the alloy's crystal structure and enhance strength and hardness.
• Quality Inspection: Conduct comprehensive quality checks, including tolerance, diameter, roundness, etc., to ensure the products meet relevant standards and technical requirements.
• Packaging and Shipment: Package the qualified precision cold-drawn aluminum rods securely to prevent damage during transportation and deliver them to the customer.

Cold-Finished(CF) Aluminum Bar vs. Aluminum Extruded Bar

 If your project demands high dimensional precision, machining efficiency, and batch consistency—especially in aerospace, medical, or high-end CNC applications—go with Cold-Finished Aluminum Bars (ASTM B211).

If cost and structural flexibility are more important, and you are working on general engineering or architectural projects, Extruded Aluminum Bars (ASTM B221) will better suit your needs.

Click here to explore our extruded aluminum bar products

Advantages of precision cold drawing aluminum rod bar

• Superior Mechanical Performance: Manufactured with high-quality alloys, it exhibits outstanding mechanical machining capabilities, ensuring product quality.
• Relatively High Precision: Small diameter tolerances, excellent straightness, and true roundness, along with high material consistency, guarantee high-precision standards for the product.
• Improved Surface Smoothness: Enhances both quality and aesthetics while reducing the need for additional surface processing, providing customers with more attractive finished products.
• Suitable for High-Speed Spindles: Ideal for use in CNC machines with spindle speeds above 5000, supporting high-speed spindle operation to enhance production efficiency.
• Enhanced Straightness Capability: Automated bar feeding improves production efficiency, reduces manual intervention, and minimizes the possibility of human errors.
• Increased Production Efficiency: Superior straightness supports high-speed spindle operation, effectively improving production efficiency, reducing equipment damage, and extending equipment lifespan.
• Advantage in Automated Production: Chamfering at both ends facilitates automatic feeding, preventing material jamming and increasing operational efficiency, ensuring high-quality finished products.
• Cost-Effective: Saves on material and labor costs, reduces waste and rework, enhances material yield, resulting in better cost-effectiveness.

Precision Drawn Aluminum Rod Supplier - Chalco

• Comprehensive Product Range: Chalco provides a full range of aluminum products, including extruded aluminum bars and precision drawn aluminum bars, to meet diverse needs.
• Advanced Production Equipment: Equipped with advanced 12,500-ton dual-action reverse extrusion production lines, highly stable drawing production lines, a 6,000-ton stretch straightening machine, multiple imported cutting machines, fully automatic feeding saws, vertical large-scale automatic feeding machines, and other processing equipment.
• Complete Molds: Chalco possesses hundreds of molds, and most popular sizes can be directly matched, saving on customized mold costs and time, and flexibly meeting the needs of most customers.
• Precision Machining Services: Offers various precision machining services such as fixed-length cutting, precision grinding, precision turning, straightening, bending, and machining, catering to individualized requirements.
• Quality and Certifications: Chalco has obtained certifications including AS9100, OHSAS 18001, ISO 14001, ISO 9001, NADCAP HT, NADCAP NDT, IATP16949, ensuring that products meet high-quality standards.

Chalco other hot selling aluminum rods

2011 aluminum bar

2017 aluminum bar

2024 aluminum bar

2618 aluminum bar

3003 aluminum bar

4032 aluminum bar

5052 aluminum bar

5083 aluminum bar

6061 aluminum bar

6063 aluminum bar

6082 aluminum bar

7075 aluminum bar

FAQs

1. What are the advantages of cold finished aluminum bars?
Cold finished bars offer tighter tolerances, better surface finish, and higher strength. Ideal for precision machining and mass production that demands consistency.

2. Are these bars suitable for welding or anodizing?
It depends on the alloy. 6061, 1100 are weldable and anodizable; 2011, 7075 are not recommended. Contact us for alloy-specific advice.

3. What tempers and alloys do you supply?
We offer cold finished bars in T3, T4, T6, T651, T8 tempers and in alloys like 2011, 2014, 2024, 2219, 3003, 5052, 6061, 6262, 7075, 1100. Custom sizes available.

4. How is dimensional tolerance controlled? Is it stable across batches?
Tolerances are held within ±0.03 mm and roundness within 0.01 mm. Stable across batches. For even tighter tolerance bars, see our Precision Ground Aluminum Bar.

5. Can you provide MTC and third-party inspection?
Yes. Every batch comes with an EN 10204 3.1 Mill Test Certificate. We also support inspection by SGS, BV or others if required.

6. What is your MOQ and lead time?
MOQ is typically 10 kg per size. In-stock items ship within 3 days. Custom orders: 2–4 weeks.

7. Do you support machining or surface finishing?
Yes. We provide CNC machining, cutting, chamfering, polishing, and anodizing to support your downstream processing.