6061 Aluminum Bar

6061 aluminum is one of the most versatile aluminum alloys and Kloeckner Metals is proud to stock it nationwide.

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General Info About Aluminum 6061

6061 aluminum is one of the most common aluminum alloys that is often specified for its combination of strength, ease of heat treatment, and comparatively easy machining and weldabillity.

  • Advantages/Disadvantages

    In addition to its favorable characteristics, aluminum 6061 bar can also be anodized, giving the bar an extra layer of protection.

  • Industries

    6061 aluminum bar is very common type of aluminum that is used in the construction and automotive industries.

  • Applications

    You will find 6061 aluminum in motorcycles, bicycle frames, yachts, camera lenses, scuba tanks, electrical fittings, fishing reels, couplings, valves, and more.

  • Machining

    Machinability of the T6 tempers is good. However, it is less easy to machine when annealed.

  • Welding

    6061 aluminum bar can be welded by all conventional methods. For thinner sections, gas tungsten arc welding is the most common approach. For heavier sections, gas metal arc welding is recommended. Alloy 4043 can be used for welding, but you can expect a decrease in T6’s mechanical properties.

  • Heat Treatment

    Heat treatment takes place at 990°F. Allow enough time for the piece to be thoroughly and evenly heated, then quench in water. Precipitation hardening can take place at 320°F for 18 hours, followed by air cooling, followed again by 350°F and, again, air cooling.

Typical Standards

Tempers
T6
T6511

Chemical Properties of 6061

AlMgSiFeCuCrZnTiMnRemainder
95.85 - 98.56%0.8 - 1.2%0.40 - 0.8%0.0 - 0.7%0.15 - 0.40%0.04 - 0.35%0.0 - 0.25%0.0 - 0.25%0.0 - 0.15%0.05% each, 0.15% total

Mechanical Properties

TemperStrength PSIBrinell HardnessPoisson's Ratio
Ultimate Tensile StrengthYield StrengthBrinellRockwell
6061-T6511290 MPa or 45,000 KSI270 MPa or 40,000 KSI95B600.33
6061-T6310MPa or 42,000 KSI270 MPa or 39,000 KSI95B600.33

Frequently Asked Questions about Aluminum Bar 6061

  • What is the density of Aluminum 6061?

    ANSWER:

    Aluminum 6061 has a density of 2.7 g/cc (metric) or 0.0975 lb/in³ (imperial).

  • What is the thermal conductivity of aluminum 6061?

    ANSWER:

    The thermal conductivity, or diffusivity, of both aluminum 6061 tempers is 68 mm²/s (imperial) or 170 W/m-K.

  • What is the tensile strength of aluminum 6061?

    ANSWER:

    The tensile strength of aluminum 6061 depends on its temper.

    • T6: Ultimate tensile strength of 310 MPa or 45 PSI & tensile yield strength of 270 MPa or 39 PSI
    • T6511: Ultimate tensile strength of 290 MPa or 42 PSI & tensile yield strength of 270 MPa or 40 PSI
  • What is the difference between 6061-T6 and 6061-T6511?

    T6 and T6511 are both tempers, or variants, of 6061 aluminum. They have the same alloy composition, but have different mechanical properties are a result of their different processing. Some notable differences:

    • T6511 has slightly higher fatigue strength (100 vs. 96 MPa)
    • T6 has higher shear strength (210 vs 170 MPa)
    • T6 has higher ultimate tensile strength (310 vs. 290 MPa)

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