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Aluminum 6061-T6; 6061-T651

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

Close Analogs:

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 98   Cr 0.04 - 0.35   Cu 0.15 - 0.4

Component    Wt. % Fe Max 0.7   Mg 0.8 - 1.2   Mn 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.

Physical Properties	Metric	English	Comments
Density	2.7 g/cc	0.0975 lb/in³
Mechanical Properties
Hardness, Brinell	95	95	500 kg load with 10 mm ball
Hardness, Knoop	120	120	Converted from Brinell Hardness Value
Hardness, Rockwell A	40	40	Converted from Brinell Hardness Value
Hardness, Rockwell B	60	60	Converted from Brinell Hardness Value
Hardness, Vickers	107	107	Converted from Brinell Hardness Value
Tensile Strength, Ultimate	310 MPa	45000 psi
Tensile Strength, Yield	275 MPa	39900 psi
Elongation at Break	12 %	12 %	In 5 cm; Sample 1.6 mm thick
Modulus of Elasticity	69 GPa	10000 ksi	Average of Tension and Compression. In Aluminum alloys, the compressive modulus is typically 2% greater than the tensile modulus
Notched Tensile Strength	324 MPa	47000 psi	2.5 cm width x 0.16 cm thick side-notched specimen, Kt = 17.
Ultimate Bearing Strength	607 MPa	88000 psi	Edge distance/pin diameter = 2.0
Bearing Yield Strength	386 MPa	56000 psi	Edge distance/pin diameter = 2.0
Poisson's Ratio	0.33	0.33	Estimated from trends in similar Al alloys.
Fatigue Strength	95 MPa	13800 psi	500,000,000 Cycles
Fracture Toughness	29 MPa-m½	26.4 ksi-in½	KIC; TL orientation.
Machinability	50 %	50 %	0-100 Scale of Aluminum Alloys
Shear Modulus	26 GPa	3770 ksi	Estimated from similar Al alloys.
Shear Strength	205 MPa	29700 psi
Electrical Properties
Electrical Resistivity	4e-006 ohm-cm	4e-006 ohm-cm
Thermal Properties
CTE, linear 20°C	23.6 µm/m-°C	13.1 µin/in-°F	20-100ºC
CTE, linear 250°C	25.2 µm/m-°C	14 µin/in-°F	Estimated from trends in similar Al alloys. 20-300°C.
Heat Capacity	0.896 J/g-°C	0.214 BTU/lb-°F
Thermal Conductivity	166.9 W/m-K	1160 BTU-in/hr-ft²-°F
Melting Point	582 - 652 °C	1080 - 1210 °F
Solidus	582 °C	1080 °F
Liquidus	652 °C	1210 °F

References are available for this material.