Aluminium 6061 Pipes & Tubes

Aluminium 6061 Pipe & Tube Manufacturer, Supplier & Stockist in India

Amardeep Steel Centre supplies aluminium 6061 pipes and tubes from Mumbai in T4, T6 and T651 tempers, in round, square, rectangular and hollow sections to ASTM B241, B210, B221 and B429. We hold ready stock across the common sizes and supply structural, automotive, marine, hydraulic and general engineering projects across India and to more than 40 export markets. Request a quote with your temper, size, wall and quantity.

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Specifying 6061: Temper Is the Decision That Matters

With the alloy settled, temper carries almost all the remaining risk on a 6061 order. The same alloy varies by a factor of nearly three between annealed and T6, and the material looks identical in every condition.

• T6 or T651 for structural and machined work
  • Both give 310 MPa tensile strength and 276 MPa yield strength.
  • T651 has additionally been stretched after quenching to relieve residual stress.
  • Specify T651 for heavily machined components because T6 can distort as stress is released during cutting.
• T4 where forming follows
  • 241 MPa tensile strength and 145 MPa yield strength, with substantially greater ductility.
  • Specify T4 when the section will be bent or formed after delivery and then aged, or where extra ductility is more important than maximum strength.
• O only where deep forming is required
  • Maximum tensile strength of 124 MPa.
  • Rarely ordered in tube form, but relevant where severe forming is followed by heat treatment.
  • Ordering O temper instead of T6 is one of the most costly temper selection mistakes for Aluminium 6061.

Aluminium 6061 vs 6063: Which One Do You Need?

The short answer: if it carries a load or goes on a lathe, specify 6061. If it will be seen or anodised, specify 6063. For a European structural specification consider 6082; for welded marine structure, 5083. Background: 6061-T6 versus 6063-T5.

Aluminium 6061 Tubes Chemical Composition

Per ASTM B241 and EN 573. The copper range is the defining feature and the reason for 6061 machines and strengthens better than 6063. Chromium up to 0.35 percent controls grain structure and improves stress corrosion resistance.

Aluminium 6061 Mechanical Properties by Temper

Aluminium 6061 Tubes & Pipes Physical Properties and Equivalents

Comparisons are approximate and intended as a guide to functionally similar materials, not a schedule of contractual equivalents.

Aluminium 6061 Pipe Size Chart in MM

Weight at 2,700 kg per cubic metre. Tube is ordered by exact outside diameter: 6 mm to 630 mm OD in walls from 0.5 mm to 30 mm, square from 12.7 mm to 300 mm, rectangular from 10 x 20 mm to 100 x 200 mm.

For any size not listed use our steel weight calculator at 2,700 density, or see the full aluminium pipe size chart on the parent page.

Welding, Machining and Anodising 6061

• Welding. TIG and MIG with 4043 or 5356 filler. 4043 gives better crack resistance and a duller weld; 5356 gives higher strength and matches better after anodising. Welding locally anneals the heat affected zone, dropping strength there to roughly T4 levels. Design the joint accordingly or re-solution treat and age the assembly.
• Machining. The copper content makes 6061 the most machinable of the common 6xxx alloys, producing clean chips rather than the gummy swarf typical of 6063. Specify T651 rather than T6 for heavily machined parts, because the stress-relieved condition holds dimension as material is removed.
• Anodising. 6061 takes clear and hard-coat anodising well. Copper can produce slight colour variation across a batch, which is why 6063 is preferred for consistent decorative finish across a facade. For functional hard anodising, 6061 is the better substrate because of its higher base hardness.

See our guide to aluminium welding techniques and alloys for filler selection and procedure detail.

Applications of Aluminium 6061 Pipes & Tubes

• Structural framing, trusses, towers and load-bearing frames where strength to weight governs
• Hydraulic and pneumatic lines in drawn seamless tube to ASTM B210
• Marine fittings, masts, railings and deck hardware, though 5083 is preferred for welded hull structure
• Automotive and transport: chassis members, roll cages, driveshafts and crash structures
• Machined components, valve bodies, manifolds and fixtures
• Scaffolding, ladders, access towers and stage rigging
• Bicycle and sports equipment frames
• Compressed air ring mains and process piping requiring a corrosion-free bore

Standards, Price, Stock and Export

6061 pricing tracks the LME aluminium price plus a conversion premium varying with temper, section, wall and quantity. T6 and T651 carry a heat treatment premium over T4. Drawing a seamless tube to B210 costs more than an extruded tube to B221 because of the additional drawing and tolerance control.

Ex stock Mumbai across the common sizes in T6, with T4, T651 and non-standard sections manufactured to order in two to four weeks. Every consignment ships with an EN 10204 3.1 Mill Test Certificate covering composition by spectrometry, tensile and yield strength, elongation and hardness in the supplied temper, plus dimensional inspection. Eddy current and ultrasonic testing on drawn seamless tube, third-party inspection on request. Exports FOB, CIF and EXW worldwide.

See our quality certifications and testing capabilities. Send your temper, section, size, wall and quantity for a same-day quotation. Request a quote.

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