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Aluminium Alloy - 6061

Aluminium Alloy 6061

Aluminium Alloy 6061 – AMS4027, AMS4026, AMS4025, AMS4082, AMS4083, AMS4117, AMS4079, AMS4080, AMS4081, AMS4113, AMS4115, AMS4116, AMS-QQ-A-200/8, AMS-QQ-A-200/16, AMS-QQ-A-225/8, AMS-QQ-A-250/11, AMS-WW-T-700/6, Mil-T-7081

Product description

Developed in 1935, 6061-T6 aluminium is a precipitation-hardened aluminium. Precipitation hardening uses high temperatures to increase the yield strength of aluminium. Precipitation hardening lowers the plasticity and hardens aluminium into 6061-T6.  6061-T6 has a density of 2.70 g/cm³ (0.0975 lb./in³) and is remarkably pure, with aluminium making up 95.85%–98.56% total.

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6061 is highly versatile and can be used for almost any structural component. Commercial and personal vehicles utilise 6061 for frames and running boards. Infrastructure uses it in mass transit and subway platforms, steps, flooring, walkways and cover plates. Consumer products such as bicycle frames and components, SCUBA tanks, fishing reels and small utility boats all benefit from the increased weldable nature and its ability to undergo hot forging.

Aluminium / Aluminium alloys are sensitive to high temperatures. They tend to lose some of their strength when exposed to high temperatures of about 200-250°C. However, their strength can be increased at subzero temperatures. They also have good corrosion resistance. Aluminium / Aluminium 6061 alloy is the most commonly available and heat treatable alloy.

Aluminium / Aluminium 6061 alloy can be easily formed and worked in the annealed condition. The standard methods are used to perform bending, stamping, deep drawing, and spinning operations.

Technical Specification

Specification Material Publication Date
AMS4027 Aluminum Alloy, Sheet and Plate 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061; -T6 Sheet, -T651 Plate) Solution and Precipitation Heat Treated 01/12/1942
AMS4026 Aluminum Alloy, Sheet and Plate 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061; -T4 Sheet, -T451 Plate) Solution Heat Treated and Naturally Aged 01/12/1942
AMS4025 Aluminum Alloy, Sheet and Plate 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-O) Annealed 01/04/1946
AMS4082 Aluminum Alloy, Seamless Drawn Tubing 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-T6) Solution and Precipitation Heat Treated 01/09/1940
AMS4083 Aluminum Alloy Tubing, Hydraulic, Seamless, Drawn, Round 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-T6) Solution and Precipitation Heat Treated 01/11/1948
AMS4117 Aluminum Alloy, Rolled or Cold Finished, Bars, Rods, and Wire and Flash Welded Rings 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061; -T6, -T651) 01/01/1960
AMS4079 Aluminum Alloy, Drawn, Round, Seamless, Tubing 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-O) Close Tolerance, Annealed 01/06/1959
AMS4080 Aluminum Alloy, Drawn Seamless Tubing 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-O) Annealed 01/10/1940
AMS4081 Aluminum Alloy Tubing, Hydraulic, Seamless, Drawn, Round 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-T4) Solution Heat Treated and Naturally Aged 01/06/1952
AMS4113 Aluminum Alloy, Extruded Profiles 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-T6) Solution and Precipitation Heat Treated 01/11/1968
AMS4115 Aluminum Alloy, Rolled or Cold-Finished, Bars, Rods, Wire, and Flash Welded Rings and Stock for Flash Welded Rings Annealed 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-O) 01/01/1960
AMS4116 Aluminum Alloy, Bars, Rods, and Wire 1.0Mg - 0.60Si - 0.30Cu - 0.20Cr (6061-T4) Cold Finished, Solution Heat Treated and Naturally Aged 01/06/1960

6061 vs. 2024

Primarily used in aerospace applications, the 2024 alloy is known for high strength. Its main alloying element is copper, and although it is strong and has good fatigue resistance, it is less machinable and more difficult to weld than 6061. It also offers poor corrosion resistance and is often used in wing and fuselage structures which come under high tension.

Technical Data

How strong is it? What's it made of?
SpecificationTensile StrengthYield StrengthElongation
H900190 KSI Min170 KSI Min8%
H925170 KSI Min155 KSI Min8%
H1025155 KSI Min145 KSI Min8%
H1075145 KSI Min125 KSI Min9%
H1100140 KSI Min115 KSI Min10%
H1150135 KSI Min105 KSI Min10%
ElementLower %Upper %
Carbon-0.070
Manganese-1.000
Silicon-1.000
Phosphorus-0.040
Sulfur-0.030
Chromium15.00017.500
Molybdenum-0.500
Columbium (Niobium)5xC0.450
Titanium--
Aluminium--
Cobalt--
Copper3.0005.000
Nickel3.0005.000

Aerocom Stock List

Tube Sheet & Plate Bar
Wall Thickness (Inches)
InchesAMS4082 T6AMS4083 T6 Hydraulic
0.188-2.500 "ODXX
0.028-0.125 "WTXX
Temper
Thickness (Inches)T6T4O (Annealed)
0.016X
0.025XX
0.032X
0.040X
0.050XX
0.063X
0.080X
0.100X
0.125XX
0.160X
0.190XX
Temper
InchesT651T6511
0.125XX
0.250XX
0.375XX
0.438XX
0.500XX
0.625XX
0.750XX
0.875XX
1.000XX
1.125XX
1.250XX
1.500XX
1.750XX
2.000XX
2.500XX
FLATSX

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    Aerocom Metals featured inventories include Alloy 625 (AMMS5581 AMS5599) 4130 (AMS6370 AMS6345 AMS6350 AMS6348) 17/4 (AMS5604) 15/5 (AMS5862) 17/7 (AMS5528) 301 (AMS5517 AMS5518 AMS5519 AMS5901) 304 (AMS5511 AMS5513) 302 (AMS5516) 2024 (AMS-QQ-A-250/4 AMS-QQ-A-250/5) 7075 (AMS-QQ-A-250/12 AMS-QQ-A-250/13) 6061 (AMS4025 AMS4026 AMS4027)