Aluminum Alloy 2011

  • Aluminum Alloy 2011
  • General Characteristics

    The 2011 alloy is free machining alloy and temper combination.

    that compares favorably with free cutting brass. 2011 is the alloy of choice when good strength and high machining rates are desired. It can be machined to very close tolerances and produces excellent machined surface finishes. Resistance welding, corrosion resistance and its ability to be anodized are only fair. Other forms of welding are not recommended. Additional strength, without compromising machinability, can be achieved using the T8 temper.

  • Typical Chemical Composition

       Others
    Alloying element Si Fe Cu Mn Mg Cr Zn Ti Each Total Aluminium
    Weight % 0.40 0.7 5.0-6.0 0.30 0.05 0.15 Remainder
  • Physical Properties

    Characteristics English Metric
    Nominal density

    (68°F/20°C)

    0.102 lbs/in3 2.82 mg/m3
    Melting range 1005°F-1180°F 541°C-638°C
    Specific heat

    (212 °F/100°C)

    0.206 BTU/lb – °F 864 J/KG- °K
    Coefficient of thermal expansion Linear

    68°F – 212°F

    20°C – 100°C

    12.8 micro in/in- °F 23.1 micro in/in- °K
    Volumetric

    68 ºF / 20 ºC

    3.72 x 10-5 in.3/in.3 – ºF 67 x 10-6 m3/m3 – ºK
    Thermal conductivity

    (68°F/20°C)

    T3, T451 88 BTU/ft- hr – °F 152 W/m – °K
    T8 100 BTU/ft- hr – °F 173 W/m – °K
    Electrical conductivity (68°F/20°C) Equal volume T3, T451 45% IACS
    T8 39% IACS
    Equal Weight T3, T451 142% IACS
    T8 123% IACS
  • Mechanical Properties

    Temper Tensile Hardness Shear Fatigue Modulus
    Ultimate Yield Elongation/ 4D Brinell

    500 kg

    10 mm

    Ultimate shearing

    strength

    Endurance limit-R.R.Moore type Modulus of elasticity
    KSI MPa KSI MPa 1/16 In. Thick Speciman KSI MPa KSI MPa KSIx103 Gpa
    T-3 55 379 43 296 15 95 32 221 18 124 10.2 70
    T-8 21 145 20 138 12 100 35 241 18 124 10.2 70
  • Specifications

    • AMS – QQ-A255/3
    • ASTM – B210, B211

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