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Aluminum 6061-T6511 Round Tubing

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Product Specifications
Item Shape
Tolerance Held
Material Type
Aluminum 6061
Wall Thickness Tolerance
+0.032/-0  inches
Brand Name
Small Parts
Length Tolerance
+0.032/-0  inches
Exterior Finish
Unfinished (Mill)
Specification Met
AMS QQ-A-200/8 , ASTM B221
Outside Diameter Tolerance
+0.032/-0  inches
Metal Construction
System of Measurement

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Key Features

  • Round metal tubing for use in marine and transportation structural applications
  • Aluminum 6061 for strength, weldability, and resistance to stress cracking and corrosion
  • Welded construction for a more consistent wall thickness than seamless tubing
  • T6511 temper (heat treated and artificially aged) for increased strength
  • Meets ASTM B221 specifications for quality assurance

Product Description

This aluminum 6061 round tubing is suitable for use in marine and transportation structural applications. The aluminum, silicon, and magnesium alloy tubing is welded for a more consistent wall thickness than seamless tubing. It resists stress cracking, is corrosion-resistant and weldable, and has a T6511 temper (heat treated and artificially aged) for increased strength. This welded round tubing meets American Society for Testing and Materials (ASTM) B221 specifications for quality assurance and is suitable for use in applications such as ship railings.

Metal tubing, also called fractional tubing, is used to transfer liquids, air, or solids, and it is characterized by a round shape and a hollow center. Metal tubing is commonly made with various grades of austenitic stainless steel, aluminum, copper, brass, and titanium materials and their alloys. Construction types include seamless, welded, or welded and drawn. Seamless tubing has no seam or weld point, which enables it to better withstand high pressure and resist corrosion. Welded tubing, made by rolling and welding metal sheet stock, is weaker than and not as rounded as seamless tubing, but it has a more consistent wall thickness for tighter wall tolerances. Welded and drawn tubing, also known as "drawn over mandrel" (DOM), is typically welded tubing that is drawn through a die and over a mandrel to create a smooth inner diameter, which gives the tubing comparable corrosion resistance to seamless tubing while still offering welded tubing's tighter wall tolerances. Compression, vacuum, sanitary, and flared fittings connect tubing or redirect flow in a fluid handling system. Metal tubing is used in HVAC and plumbing systems and for applications in the aerospace, automotive, chemical processing, food and beverage, manufacturing, and medical industries.

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