1100 Aluminum Round Bar Stock
1100 Aluminum Round Bar Stock
1100 Aluminum Round Bar Stock offers excellent corrosion resistance, electrical conductivity, and formability. Available to applicable ASTM B211/B221 specifications in O and selected H tempers, it is suitable for electrical components, rivets, and general fabrication. Custom diameters and lengths are available.
- Mill Test Certificate Provided
- Strict Quality Inspection
- Custom Sizes Available
- On-Time Global Delivery
1100 Aluminum Round Bar Stock, designated UNS A91100, is a commercially pure aluminum product containing at least 99.0% aluminum. It offers excellent corrosion resistance, high electrical and thermal conductivity, and good formability. Common applications include electrical components, rivets, chemical processing equipment, and general industrial fabrication.
Grade 1100 provides excellent weldability and ductility, particularly in the annealed condition. It can be cut, bent, formed, and welded using conventional fabrication methods. However, its relatively low mechanical strength and gummy machining characteristics make it less suitable for heavily loaded structural parts or precision-machined components. Material temper and processing methods should be selected according to the intended application.
Sky Steel Group supplies 1100 aluminum round bars for electrical equipment manufacturers, metal fabricators, and industrial distributors. Material can be specified to ASTM B211 or ASTM B221, depending on the manufacturing process, with diameters, lengths, and tempers selected according to project requirements. Custom cutting and material inspection certificates can be arranged upon request, subject to order confirmation.
Key Features of 1100 Aluminum Round Bar Stock
- High Aluminum Purity: Contains at least 99.0% aluminum, providing excellent electrical and thermal conductivity.
- Excellent Corrosion Resistance: Resists corrosion in many atmospheric and general industrial environments.
- Good Formability: Suitable for bending, forming, and cold working, particularly in the annealed (O) condition.
- Excellent Weldability: Supports conventional aluminum welding processes with appropriate procedures and filler materials.
- Low Mechanical Strength: Best suited for applications where conductivity and formability are more important than structural strength.
- Flexible Supply Options: Available in various diameters, lengths, and applicable tempers, with custom cutting options upon request.
Technical Specifications of 1100 Aluminum Round Bar Stock
| Parameter | Specification |
|---|---|
| Product Name | 1100 Aluminum Round Bar Stock |
| Alloy Grade | 1100 |
| UNS Designation | A91100 |
| Aluminum Content | ≥ 99.0% |
| Material Standards | ASTM B211 / ASTM B221 (as applicable) |
| Temper | O, H12, H14, H18 (subject to availability and applicable standard) |
| Diameter | Custom sizes available |
| Length | Standard or custom cut lengths |
| Product Form | Round Bar / Rod |
| Density | Approx. 2.71 g/cm³ |
| Thermal Conductivity | Approx. 220–230 W/m·K (temper dependent) |
| Electrical Conductivity | Approx. 59% IACS (temper dependent) |
| Surface Finish | Mill Finish / As Supplied |
| Processing Options | Cutting, Bending, Forming, Welding |
| Material Certification | MTC available upon request, subject to confirmation |
| Applications | Electrical Components, Rivets, Chemical Equipment, General Fabrication |
Applications of 1100 Aluminum Round Bar Stock
01. Aerospace Components
1100 aluminum round bars can be used for lightweight, non-structural aircraft components, interior fittings, and general-purpose hardware. Their corrosion resistance and formability make them suitable for applications where high mechanical strength is not required.
02. Electrical Applications
With a minimum aluminum content of 99.0%, 1100 aluminum provides good electrical conductivity. Round bars can be fabricated into electrical connectors, conductive fittings, and other components where conductivity and corrosion resistance are important.
03. Building & Construction
1100 aluminum round bars are used for decorative fittings, architectural trim, and lightweight, non-load-bearing building components. Their corrosion resistance and ease of fabrication make them suitable for selected interior and exterior architectural applications.
04. General Machining & Fabrication
1100 aluminum round bars can be processed into simple spacers, pins, fittings, and custom fabricated components. Although the alloy offers good formability, its soft and ductile nature requires appropriate machining techniques to achieve consistent dimensional accuracy and surface finishes.
Frequently Asked Questions About 1100 Aluminum Round Bar Stock
1. What is 1100 aluminum round bar?
1100 aluminum round bar is a commercially pure aluminum product containing at least 99.0% aluminum. Identified as UNS A91100, it offers excellent corrosion resistance, good electrical and thermal conductivity, and high formability. It is commonly used for electrical components, decorative fittings, and general fabrication where high mechanical strength is not required.
2. What is the difference between 1100 and 6061 aluminum round bar?
The main differences are alloy composition, mechanical strength, and conductivity. Grade 1100 is commercially pure aluminum, offering higher electrical conductivity and excellent formability but relatively low strength. Grade 6061 is an aluminum-magnesium-silicon alloy that can be heat-treated to achieve significantly higher strength. For load-bearing components and demanding machined parts, 6061 is generally the more suitable choice.
3. What standards apply to 1100 aluminum round bar?
1100 aluminum round bars are commonly supplied in accordance with ASTM B221/B221M for extruded bars and ASTM B211/B211M for rolled or cold-finished bars, depending on the manufacturing process and product requirements. The alloy is designated as UNS A91100 and contains a minimum of 99.0% aluminum. Customers should specify the required diameter, length, temper, dimensional tolerances, and applicable ASTM standard when placing an order.
4. Is 1100 aluminum round bar suitable for CNC machining?
Yes, 1100 aluminum round bar can be machined, although its relatively soft and ductile nature may cause built-up edges, long chips, and difficulty achieving consistent surface finishes. Sharp cutting tools, appropriate cutting parameters, and suitable lubrication can improve machining results. For complex precision-machined components, alloys with better machinability may be more suitable.
5. What are the common applications of 1100 aluminum round bar?
1100 aluminum round bar is used in electrical components, architectural fittings, decorative hardware, lightweight non-structural parts, and general fabrication. Its good conductivity, corrosion resistance, and formability make it suitable for applications where these properties are more important than high mechanical strength.
6. Can 1100 aluminum round bar be welded?
Yes. Grade 1100 offers excellent weldability and can be joined using conventional aluminum welding processes, including TIG and MIG welding. Suitable filler materials, proper surface preparation, and appropriate welding procedures should be selected according to the application. Joint strength and service conditions should be evaluated when welding components for demanding applications.
7. Is 1100 aluminum round bar corrosion-resistant?
Yes. 1100 aluminum provides excellent corrosion resistance in many atmospheric and general industrial environments due to its naturally forming protective oxide layer. However, its performance depends on exposure conditions. Aggressive chemicals, strongly alkaline solutions, and certain chloride-containing environments may require additional corrosion protection or material evaluation.
8. Can Sky Steel Group supply custom sizes of 1100 aluminum round bar?
Sky Steel Group supplies 1100 aluminum round bars according to customer requirements for diameter, length, temper, and order quantity, subject to availability. Custom cutting and material test certificates (MTC) can be discussed upon request. Customers are encouraged to provide their required dimensions, applicable ASTM standards, and estimated quantities to obtain an accurate quotation.
