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. %
Al95.8 - 98.6 
Cr0.04 - 0.35 
Cu0.15 - 0.4 
FeMax 0.7 
Component   Wt. %
Mg0.8 - 1.2 
MnMax 0.15 
Other, eachMax 0.05 
Other, totalMax 0.15 
Component   Wt. %
Si0.4 - 0.8 
TiMax 0.15 
ZnMax 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 PropertiesMetricEnglishComments
Density2.7 g/cc0.0975 lb/in AA; Typical

Mechanical Properties
Hardness, Brinell6565 AA; Typical; 500 g load; 10 mm ball
Hardness, Knoop8888 Converted from Brinell Hardness Value
Hardness, Vickers7575 Converted from Brinell Hardness Value
Ultimate Tensile Strength241 MPa35000 psi AA; Typical
Tensile Yield Strength145 MPa21000 psi AA; Typical
Elongation at Break22 %22 % AA; Typical; 1/16 in. (1.6 mm) Thickness
Elongation at Break25 %25 % AA; Typical; 1/2 in. (12.7 mm) Diameter
Modulus of Elasticity68.9 GPa10000 ksi AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus.
Poisson's Ratio0.330.33 Estimated from trends in similar Al alloys.
Fatigue Strength96.5 MPa14000 psi AA; 500,000,000 cycles completely reversed stress; RR Moore machine/specimen
Machinability50 %50 % 0-100 Scale of Aluminum Alloys
Shear Modulus26 GPa3770 ksi Estimated from similar Al alloys.
Shear Strength165 MPa24000 psi AA; Typical

Electrical Properties
Electrical Resistivity4.32e-006 ohm-cm4.32e-006 ohm-cm AA; Typical at 68F

Thermal Properties
CTE, linear 68F23.6 m/m-C13.1 in/in-F AA; Typical; Average over 68-212F range.
CTE, linear 250C25.2 m/m-C14 in/in-F Estimated from trends in similar Al alloys. 20-300C.
Specific Heat Capacity0.896 J/g-C0.214 BTU/lb-F 
Thermal Conductivity154 W/m-K1070 BTU-in/hr-ft-F AA; Typical at 77F
Melting Point582 - 652 C1080 - 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.
Solidus582 C1080 F AA; Typical
Liquidus652 C1205 F AA; Typical

Processing Properties
Solution Temperature529 C985 F 
Aging Temperature160 C320 F Rolled or drawn products; hold at temperature for 18 hr
Aging Temperature177 C350 F Extrusions or forgings; hold at temperature for 8 hr

References for this datasheet.


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