Aluminum 6061-T6; 6061-T651

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Subcategory: 6000 Series Aluminum Alloy; Aluminum Alloy; Metal; Nonferrous Metal

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Composition Notes:
Aluminum content reported is calculated as remainder.
Composition information provided by the Aluminum Association and is not for design.

Key Words: al6061, UNS A96061; ISO AlMg1SiCu; Aluminium 6061-T6, AD-33 (Russia); AA6061-T6; 6061T6, UNS A96061; ISO AlMg1SiCu; Aluminium 6061-T651, AD-33 (Russia); AA6061-T651

Component    Wt. % Al 95.8 - 98.6   Cr 0.04 - 0.35   Cu 0.15 - 0.4   Fe Max 0.7

Component    Wt. % Mg 0.8 - 1.2   Mn Max 0.15   Other, each Max 0.05   Other, total Max 0.15

Component    Wt. % Si 0.4 - 0.8   Ti Max 0.15   Zn Max 0.25

Material Notes:
Information provided by Alcoa, Starmet and the references. General 6061 characteristics and uses: Excellent joining characteristics, good acceptance of applied coatings. Combines relatively high strength, good workability, and high resistance to corrosion; widely available. The T8 and T9 tempers offer better chipping characteristics over the T6 temper.

Applications: Aircraft fittings, camera lens mounts, couplings, marines fittings and hardware, electrical fittings and connectors, decorative or misc. hardware, hinge pins, magneto parts, brake pistons, hydraulic pistons, appliance fittings, valves and valve parts; bike frames.

Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.

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Physical Properties	Original Value		Comments
Density	2.7 g/cc		AA; Typical
Mechanical Properties
Hardness, Brinell	95		AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	120		Converted from Brinell Hardness Value
Hardness, Rockwell A	40		Converted from Brinell Hardness Value
Hardness, Rockwell B	60		Converted from Brinell Hardness Value
Hardness, Vickers	107		Converted from Brinell Hardness Value
Ultimate Tensile Strength	45 ksi		AA; Typical
Tensile Yield Strength	40 ksi		AA; Typical
Elongation at Break	12 %		AA; Typical; 1/16 in. (1.6 mm) Thickness
Elongation at Break	17 %		AA; Typical; 1/2 in. (12.7 mm) Diameter
Modulus of Elasticity	10000 ksi		AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Notched Tensile Strength	324 MPa		2.5 cm width x 0.16 cm thick side-notched specimen, Kt = 17.
Ultimate Bearing Strength	607 MPa		Edge distance/pin diameter = 2.0
Bearing Yield Strength	386 MPa		Edge distance/pin diameter = 2.0
Poisson's Ratio	0.33		Estimated from trends in similar Al alloys.
Fatigue Strength	14000 psi		AA; 500,000,000 cycles completely reversed stress; RR Moore machine/specimen
Fracture Toughness	29 MPa-m½		KIC; TL orientation.
Machinability	50 %		0-100 Scale of Aluminum Alloys
Shear Modulus	26 GPa		Estimated from similar Al alloys.
Shear Strength	30 ksi		AA; Typical
Electrical Properties
Electrical Resistivity	24 ohm-cir-mil/ft		AA; Typical at 68°F
Thermal Properties
CTE, linear 68°F	13.1 µin/in-°F		AA; Typical; Average over 68-212°F range.
CTE, linear 250°C	25.2 µm/m-°C		Estimated from trends in similar Al alloys. 20-300°C.
Specific Heat Capacity	0.896 J/g-°C
Thermal Conductivity	1160 BTU-in/hr-ft²-°F		AA; Typical at 77°F
Melting Point	1080 - 1205 °F		AA; Typical range based on typical composition for wrought products 1/4 inch thickness or greater; Eutectic melting can be completely eliminated by homogenization.
Solidus	1080 °F		AA; Typical
Liquidus	1205 °F		AA; Typical
Processing Properties
Solution Temperature	985 °F
Aging Temperature	320 °F		Rolled or drawn products; hold at temperature for 18 hr
Aging Temperature	350 °F		Extrusions or forgings; hold at temperature for 8 hr
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