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Aluminum 6061-T6; 6061-T651
Subcategory:
6000 Series Aluminum Alloy; Aluminum Alloy; Metal; Nonferrous Metal
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
Mg 0.8 - 1.2
Mn Max 0.15
 
Component   Wt. %
Other, each Max 0.05
Other, total Max 0.15
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.
 
Physical Properties Metric English Comments
Density 2.7 g/cc 0.0975 lb/in³ AA; Typical
 
  Mechanical Properties
   
Hardness, Brinell
 95
 95
 AA; Typical; 500 g load; 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
Ultimate Tensile Strength 310 MPa 45000 psi AA; Typical
Tensile Yield Strength 276 MPa 40000 psi AA; Typical
Elongation at Break 12 % 12 % AA; Typical; 1/16 in. (1.6 mm) Thickness
Elongation at Break 17 % 17 % 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.
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 96.5 MPa 14000 psi AA; 500,000,000 cycles completely reversed stress; RR Moore machine/specimen
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 207 MPa 30000 psi AA; Typical
 
 
  Electrical Properties
Electrical Resistivity 3.99e-006 ohm-cm 3.99e-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.
Heat Capacity 0.896 J/g-°C 0.214 BTU/lb-°F
Thermal Conductivity 167 W/m-K 1160 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
 
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