Aluminum 6061-T8


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, Aluminium 6061-T8; UNS A96061; ISO AlMg1SiCu, AD-33 (Russia); AA6061-T8

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:
Weldability = A; Stress Corrosion Cracking Resistance = A; General Corrosion Resistance = B (A = best; E = worst). 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.

Some data provided by Alcoa.

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, Brinell120120 500 kg load/10 mm ball
Hardness, Knoop150150 Estimated from Brinell
Hardness, Rockwell A46.846.8 Estimated from Brinell
Hardness, Rockwell B7575 Estimated from Brinell
Hardness, Vickers136136 Estimated from Brinell
Tensile Strength, UltimateMin 310 MPaMin 45000 psi 
Tensile Strength, YieldMin 276 MPaMin 40000 psi 
Elongation at Break8 %8 % 
Modulus of Elasticity69 GPa10000 ksi Average of Tension and Compression. In Aluminum alloys, the compressive modulus is typically 2% greater than the tensile modulus
Poisson's Ratio0.330.33 Estimated from trends in similar Al alloys.
Machinability50 %50 % 0-100 Scale (A=90; B=70; C=50; D=30; E=10)
Shear Modulus26 GPa3770 ksi Estimated from similar Al alloys.
Shear Strength185 MPa26800 psi Estimated from ultimate tensile strength

Electrical Properties
Electrical Resistivity3.7e-006 ohm-cm3.7e-006 ohm-cm 

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 Conductivity170 W/m-K1180 BTU-in/hr-ft-F 
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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