Aluminum Alloy 6061

  • Aluminum Alloy 6061

  • General Characteristics

    The 6061 alloy is the GENERAL ENGIEERING type of alloy. Most commend used in industry. exhibits very good corrosion resistance and finishability, plus excellent weldability and a strength level approximating that of a mild steel. It is a popular general-purpose alloy. Machinability is good and in the annealed state, its workability carries a high rating, staying at the “good” level if heat-treated without aging. Typical end uses are aircraft landing mat, large and small marine vessels, structural architectural parts, storage tanks and highway signs.

  • Typical Chemical Composition

    Other
    Weight % Si Fe Cu Mn Mg Cr Zn Ti Each Total Aluminum
    minimum 0.40 — 0.15 — 0.80 0.04 — — — — Remainder
    maximum 0.80 0.7 0.40 0.15 1.20 0.35 0.25 0.15 0.05 0.15

  • Physical Properties

    Characteristics English Metric
    Nominal density

    (68°F/20°C)

    		 0.0975 lbs/in3 2.70 mg/m3
    Melting range 1080°F- 1205°F 582°C-652°C
    Specific heat

    (212 °F/100°C)

    		 0.214 BTU/lb – °F 896 J/KG- °K
    Coefficient of thermal expansion Linear

    68°F – 212°F

    20°C – 100°C

    		 13.1 micro in/in- °F 23.6 micro m/m- °K
    Volumetric

    68°F – 212°F

    		 3.93×10-5in/in-°F 71X10-6m3/m 3-°K
    Thermal conductivity

    (68°F/20°C)

    		 0 temper 104 BTU/ft- hr – °F 180 W/m – °K
    T451 89 BTU/ft- hr – °F 154 W/m – °K
    T6, T651 97 BTU/ft- hr – °F 167 W/m – °K
    Electrical conductivity

    (68°F/20°C)

    		 Equal volume 0 temper 47% IACS
    T451 40% IACS
    T6, T651 43% IACS
    Equal volume 0 temper 155% IACS
    T451 132% IACS
    T6, T651 142% 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 %

    (.500″ dia. Specimen)

    		 KSI MPa KSI MPa KSIx103 Gpa
    O 18 124 8 55 30 30 12 83 9 62 10.0 68.3
    T4, T451 35 241 21 145 25 65 24 165 14 97 10.0 68.3
    T6, T651 45 310 40 276 17 95 30 207 14 97 10.0 68.3

  • Specifications

    • AMS – 4079, 4080, 4150, 4160, 4161, 4172, 4173, QQ-A-200/8, WW-T-700/6
    • Military Specifications – MIL-P-25995
    • ASTM – B210, B234, B241, B345, B404, B429, B483, B547
    • ASME – SB210, SB221, SB234, SB241
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