Aluminum 6061-T4; 6061-T451

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, AD-33 (Russia); AA6061-T451; AA6061-T4, UNS A96061; ISO AlMg1SiCu; Aluminum 6061-T451; Aluminium 6061-T4; Aluminium 6061-T451

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 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.

Uses: 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.

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

Physical Properties	Metric	English	Comments
Density	2.7 g/cc	0.0975 lb/in³	AA; Typical
Mechanical Properties
Hardness, Brinell	65	65	AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop	88	88	Converted from Brinell Hardness Value
Hardness, Vickers	75	75	Converted from Brinell Hardness Value
Ultimate Tensile Strength	241 MPa	35000 psi	AA; Typical
Tensile Yield Strength	145 MPa	21000 psi	AA; Typical
Elongation at Break	22 %	22 %	AA; Typical; 1/16 in. (1.6 mm) Thickness
Elongation at Break	25 %	25 %	AA; Typical; 1/2 in. (12.7 mm) Diameter
Modulus of Elasticity	68.9 GPa	10000 ksi	AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poisson's Ratio	0.33	0.33	Estimated from trends in similar Al alloys.
Fatigue Strength	96.5 MPa	14000 psi	AA; 500,000,000 cycles completely reversed stress; RR Moore machine/specimen
Machinability	50 %	50 %	0-100 Scale of Aluminum Alloys
Shear Modulus	26 GPa	3770 ksi	Estimated from similar Al alloys.
Shear Strength	165 MPa	24000 psi	AA; Typical
Electrical Properties
Electrical Resistivity	4.32e-006 ohm-cm	4.32e-006 ohm-cm	AA; Typical at 68°F
Thermal Properties
CTE, linear 68°F	23.6 µm/m-°C	13.1 µin/in-°F	AA; Typical; Average over 68-212°F range.
CTE, linear 250°C	25.2 µm/m-°C	14 µin/in-°F	Estimated from trends in similar Al alloys. 20-300°C.
Specific Heat Capacity	0.896 J/g-°C	0.214 BTU/lb-°F
Thermal Conductivity	154 W/m-K	1070 BTU-in/hr-ft²-°F	AA; Typical at 77°F
Melting Point	582 - 652 °C	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	582 °C	1080 °F	AA; Typical
Liquidus	652 °C	1205 °F	AA; Typical
Processing Properties
Solution Temperature	529 °C	985 °F
Aging Temperature	160 °C	320 °F	Rolled or drawn products; hold at temperature for 18 hr
Aging Temperature	177 °C	350 °F	Extrusions or forgings; hold at temperature for 8 hr

References for this datasheet.