6061 Aluminum Alloy (Al 6061-T6, 6061-T651, 6061-T4)
Al-6061 aluminum alloy is a general purpose structural alloy developed by Alcoa in 1935. The temper designations mainly have 6061-T4, T451, Al 6061-T6, 6061-T651, etc. It is one of the most widely used alloys. The main alloying elements are magnesium (Mg) and silicon (Si). The content of silicon and magnesium in this alloy is close to form magnesium silicide (Mg2Si), so it is a heat-treated wrought alloy.
Aluminum 6061-T6 has a minimum yield strength of 35 ksi (240 MPa), which is almost equal to that of A36 steel. This strength, combined with its light weight (about 1/3 that of steel), makes it particularly suitable for structural applications where static loads are a concern. Compared to 7000 (e.g. alloy 7075) and 2000 series (e.g. alloy 2024) aluminum, AA6061, although lower in strength, is less sensitive to solution heat treatment and quench variation.
Because 6061 aluminium alloy is easy to extrude, it can provide a variety of product forms such as sheet, strip, plate, rod, forgings, tubes, pipes, wires, extruded parts and structural shapes.
Aluminum 6061 has good corrosion resistance, mechanical properties, formability, weldability, and machinability. Generally suitable for medium to high strength requirements, and has good toughness. Applications range from food and beverage packaging, electronic products and home appliances, architectural decoration, transportation to aerospace components. Alloy 6082, popular in Europe, is slightly stronger than AA6061 and has similar uses.
The abbreviations Al-6061 and AA6061 in this article are the same material. Al-Aluminum; AA-the Aluminum Association or Aluminum Alloy.
Mechanical Properties
Aluminium 6061-T6 mechanical properties are listed in the following tables including yield strength (yield stress), ultimate tensile strength, shear strength, modulus of elasticity, young’s modulus, etc.
The following mechanical properties is the average value of various sizes, product forms and manufacturing methods, so the properties cannot be guaranteed. They are only used as a basis for comparing alloys and tempering, and should not be specified as engineering requirements or used for design purposes.
Aluminum 6061 Mechanical Properties, Part-1 Aluminum Alloy and Temper Ultimate Tensile strength, MPa (ksi) Yield strength, MPa (ksi) Elongation in 50 mm (2 in.), ≥% Brinell Hardness, HB (500 kgf load 10 mm ball) 1.6mm (1/16 in.) thick specimen 12.5mm (1/2 in.) thick specimen 6061-O 125 (18) 55 (8) 25 27 30 6061-T4, T451 240 (35) 145 (21) 22 22 65 6061-T6, T651 310 (45) 275 (40) 12 15 95 Alclad 6061-O 115 (17) 50 (7) 25 – – Alclad 6061-T4, T451 230 (33) 130 (19) 22 – – Alclad 6061-T6, T651 290 (42) 255 (37) 12 – – Aluminum 6061 Mechanical Properties, Part-2 Aluminum Alloy and Temper Ultimate shear strength, MPa (ksi) Modulus of elasticity, GPa (106 psi) Fatigue endurance limit, MPa (ksi) 6061-O 85 (12) 69 (10) 60 (9) 6061-T4, T451 165 (24) 69 (10) 95 (14) Al 6061-T6, T651 205 (30) 69 (10) 95 (14) Alclad 6061-O 75 (11) 69 (10) – Alclad 6061-T4, T451 150 (22) 69 (10) – Alclad 6061-T6, 6061-T651 185 (27) 69 (10) – Notes for modulus of elasticity: The average of the tensile (Young’s modulus) and compressive modulus. The compression modulus is about 2% higher than the tensile modulus (Young’s modulus).
Aluminum 6061 Typical Mechanical Properties at Different Temperatures Alloy and temper Temperature, °C (°F) Ultimate tensile strength, MPa (ksi) 0.2% offset yield strength Elongation in 50 mm (2 in.), ≥%, 6061-T6,
6061-T651-195 (-320) 415 (60) 325 (47) 22 -80 (-112) 338 (49) 290 (42) 18 0 (-18) 325 (47) 283 (41) 17 24 (75) 310 (45) 275 (40) 17 100 (212) 290 (42) 262 (38) 18 150 (300) 235 (34) 215 (31) 20 205 (400) 130 (19) 103 (15) 28 250 (500) 52 (7.5) 35 (5) 60 315 (600) 32 (4.6) 19 (2.7) 85 370 (700) 21 (3) 12 (1.8) 95 1000 Series
Industrial Pure Aluminum(1050,1060 ,1070, 1100)
2000 Series
Aluminum-copper alloys(2024(2A12), LY12, LY11, 2A11, 2A14(LD10), 2017, 2A17)
3000 Series
Aluminum-manganese alloys(3A21, 3003, 3103, 3004, 3005, 3105)
4000 Series
Al-Si alloys(4A03, 4A11, 4A13, 4A17, 4004, 4032, 4043, 4043A, 4047, 4047A)
5000 Series
Al-Mg alloys(5052, 5083, 5754, 5005, 5086,5182)
6000 Series
Aluminum Magnesium Silicon Alloys(6063, 6061, 6060, 6351, 6070, 6181, 6082, 6A02)
7000 Series
Aluminum, Zinc, Magnesium and Copper Alloys(7075, 7A04, 7A09, 7A52, 7A05)
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Contact Us:
Tony Zhang
Chongqing Xinsheng Aluminium Co.,Ltd
Add:Xipeng Town Jiulongpo District Chongqing China
Mail: tony_lingzhang@hotmail.com
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