6061 and 6063 Structural Shapes
6061 alloy is the accepted alloy for structural shapes and in the (T6) condition the strength is approximately equal to that of structural steel. It combines high strength, good workability, weldability, and corrosion resistance, making it popular for a wide variety of uses. 6061 angles and channels have an inside radius for strength. 6063 alloy offers the best compromise of all commercial alloys for extrudability, strength and cost, excellent corrosion resistance, formability, weldability, surface appearance, and good strength. It has excellent finishing characteristics and will anodize well for color match with 3003 and 5052. Often referred to as architectural angle and channel, it has sharp corners, both inside the structural shape and out.
ANALYSIS


6061  0.15  0.40.8  0.150.35  0.150.4  0.7  0.25  0.81.2  0.15 
6063  0  0.20.8  0.1  0.1  0.35  0.1  0.450.9  0.1 
Note: trace elements of 0.005 are present totaling 0.15% of weight Remainder of above: Aluminum
6061 Structurals conform to ASTM B308, QQA200/16
6063 Structurals conform to ASTM B221, AMS 4156, QQA200/9
MECHANICAL PROPERTIES

6061 Structural  45,000  40,000  30,000  17  95 
6063 Structural  27,000  21,000  17,000  12  60 
The above values are average and may be considered as representative of 6061 and 6063 Structural Aluminum
APPLICATIONS
Used for general structural purposes. 6061 most widely used for scaffolding, ship construction, transmission towers, truck trailers, machine parts, and furniture applications. 6063 is used extensively for architectural molding and trim, furniture, window and door construction, etc.
MACHINEABILITY AND WELDABILITY
6061 in the T4 condition has a machinability rating of 90% when compared to 2011 at 100%. Machines to a high finish.
6063 in the T4/T6 condition has a machinability rating of 80% when compared to 2011 at 100%
6061 and 6063 can be readily welded using all the common welding techniques.
TOLERANCES
Permissible Variations in Cross Section for Aluminum Structural Shapes
Shape 
Nominal Dimensions 
Toleranceª
Inches of percent of nominal allowable deviation 
Angles 
Thickness 
± 21/2%, +0.010" min. 
Flange Width 
± 21/2%, +1/16" min. 
Channels 
Thickness 
± 21/2%, +0.010" min. 
Flange width 
± 4% 
Depth 
+3/32", 1/16" 
ª Inches or percent of nominal
Angularity
Nominal leg, web, or flange thickness whichever least (in)

Tolerance Degrees plus or minus
Allowable deviation from 90 degrees 
Under 0.188 
2 
0.188  0.749 
11/2 
.75 and over 
1 
Twist
Specified width or depth, whichever is greater

Tolerance Degrees plus or minus
Allowable deviation from 90 degrees 
Per Foot 
Per Length 
Under 1.500" 
1° 
1° x length (ft) 
1.500  2.999" 
1/2° 
1/2° x length (ft); 5° 
3.000 and over 
1/4° 
1/4° x length (ft); 3° 
FLATNESS
Depth (max) = 0.004" x Width
Allowable deviation from flat;
0.004 inch per inch of width;
0.004 inch minimum
STRAIGHTNESS
Allowable deviation from straight
Up thru 5 feet: 0.125"
Over 5 feet: Length, ft X 0.025"
CORNER AND FILLET RADII
Specified Radius (in) 
Tolerance (in) Allowable deviation from specified radius 
Sharp Corners 
± 1/64" 
Under 0.188 
± 1/64" 
0.188 and over 
± 10% 
SPEEDY METALS ITEMS
1/8" {A} x 3/4" {B} x 3/4" {C} Angle 6061T6 Aluminum, Extruded

1/8" {A} x 1" {B} x 1" {C} Angle 6061T6 Aluminum, Extruded

3/16" {A} x 1" {B} x 1" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 1" {B} x 1" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 11/4" {B} x 11/4" {C} Angle 6061T6 Aluminum, Extruded

3/16" {A} x 11/4" {B} x 11/4" {C} Angle 6061T6 Aluminum, Extruded

1/8" {A} x 11/4" {B} x 11/4" {C} Angle 6061T6 Aluminum, Extruded

1/8" {A} x 11/2" {B} x 11/2" {C} Angle 6061T6 Aluminum, Extruded

3/16" {A} x 11/2" {B} x 11/2" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 11/2" {B} x 11/2" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 11/2" {B} x 2" {C} Angle 6061T6 Aluminum, Extruded

1/8" {A} x 11/2" {B} x 2" {C} Angle 6061T6 Aluminum, Extruded

1/8" {A} x 13/4" {B} x 13/4" {C} Angle 6061T6 Aluminum, Extruded

3/16" {A} x 13/4" {B} x 13/4" {C} Angle 6061T6 Aluminum, Extruded

3/16" {A} x 2" {B} x 2" {C} Angle 6061T6 Aluminum, Extruded

1/8" {A} x 2" {B} x 2" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 2" {B} x 2" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 2" {B} x 2" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 2" {B} x 21/2" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 2" {B} x 3" {C} Angle 6061T6 Aluminum, Extruded

3/16" {A} x 2" {B} x 3" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 2" {B} x 3" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 21/2" {B} x 21/2" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 21/2" {B} x 21/2" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 3" {B} x 3" {C} Angle 6061T6 Aluminum, Extruded

3/16" {A} x 3" {B} x 3" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 3" {B} x 3" {C} Angle 6061T6 Aluminum, Extruded

1/2" {A} x 3" {B} x 3" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 3" {B} x 4" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 3" {B} x 4" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 3" {B} x 5" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 4" {B} x 4" {C} Angle 6061T6 Aluminum, Extruded

1/2" {A} x 4" {B} x 4" {C} Angle 6061T6 Aluminum, Extruded

1/4" {A} x 4" {B} x 4" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 4" {B} x 6" {C} Angle 6061T6 Aluminum, Extruded

3/8" {A} x 5" {B} x 5" {C} Angle 6061T6 Aluminum, Extruded

1/2" {A} x 6" {B} x 6" {C} Angle 6061T6 Aluminum, Extruded

1/2" {A} x 8" {B} x 8" {C} Angle 6061T6 Aluminum, Extruded

1/8" {A} x 1/2" {B} x 1/2" {C} Angle 6063T52 Aluminum, Extruded

1/16" {A} x 1/2" {B} x 1/2" {C} Angle 6063T52 Aluminum, Extruded

1/8" {A} x 3/4" {B} x 3/4" {C} Angle 6063T52 Aluminum, Extruded

1/8" {A} x 1" {B} x 1" {C} Angle 6063T52 Aluminum, Extruded

1/16" {A} x 1" {B} x 1" {C} Angle 6063T52 Aluminum, Extruded

1/8" {A} x 1" {B} x 11/2" {C} Angle 6063T52 Aluminum, Extruded

1/8" {A} x 1" {B} x 2" {C} Angle 6063T52 Aluminum, Extruded

1/4" {A} x 11/2" {B} x 11/2" {C} Angle 6063T52 Aluminum, Extruded

1/8" {A} x 11/2" {B} x 11/2" {C} Angle 6063T52 Aluminum, Extruded

1/4" {A} x 2" {B} x 2" {C} Angle 6063T52 Aluminum, Extruded

1/8" {A} x 2" {B} x 2" {C} Angle 6063T52 Aluminum, Extruded

3/16" {A} x 2" {B} x 2" {C} Angle 6063T52 Aluminum, Extruded

1/4" {A} x 2" {B} x 3" {C} Angle 6063T52 Aluminum, Extruded

1/4" {A} x 3" {B} x 3" {C} Angle 6063T52 Aluminum, Extruded

3" {A} x 1.410" {B} x 0.170" {C} Channel 6061T6 Aluminum, Extruded

4" {A} x 1.580" {B} x 0.180" {C} Channel 6061T6 Aluminum, Extruded

3" {A} x 1.596" {B} x 0.356" {C} Channel 6061T6 Aluminum, Extruded

5" {A} x 1.885" {B} x 0.325" {C} Channel 6061T6 Aluminum, Extruded

6" {A} x 1.920" {B} x 0.200" {C} Channel 6061T6 Aluminum, Extruded

1" {A} x 1/2" {B} x 1/8" {C} Channel 6063T52 Aluminum, Extruded

2" {A} x 1/2" {B} x 1/8" {C} Channel 6063T52 Aluminum, Extruded

3/4" {A} x 3/4" {B} x 1/8" {C} Channel 6063T52 Aluminum, Extruded

1" {A} x 1" {B} x 1/8" {C} Channel 6063T52 Aluminum, Extruded

13/4" {A} x 1" {B} x 1/8" {C} Channel 6063T52 Aluminum, Extruded

2" {A} x 1" {B} x 1/8" {C} Channel 6063T52 Aluminum, Extruded

11/4" {A} x 11/4" {B} x 1/8" {C} Channel 6063T52 Aluminum, Extruded

21/2" {A} x 11/2" {B} x 1/8" {C} Channel 6063T52 Aluminum, Extruded
