Principal Design Features		This is generally considered to be an extrusion alloy that is heat treatable for strengthening.

Applications		Commonly used in the manufacture of furniture, windows, stair rails, and in pipe railing. Commonly used in architectural extrusions.

Machinability		Machinability is considered to be average for this alloy.

Forming		Forming ability, either hot or cold, is good.

Welding		The alloy is readily welded by all of the conventional methods. Filler rod should be of the same alloy or AL 4043 alloy.

Heat Treatment		Solution heat treat at 970 F for 1 hour followed by water quench. This produces T 4 temper. Other tempers are accomplished by aging.

Forging		Hot forging may be done in the range of 500 F to 950 F.

Hot Working		Hot working, as with forging, may be done at temperatures above 500 F up to maximum of 950 F.

Cold Working		Cold working characteristics are good for all conventional forming methods.

Annealing		Anneal at 775 F for 3 hours and use controlled cooling at rate of 50 F per hour down to 500 F. Then air cool.

Aging		Aging is done at a temperature of 350 F for 8 hours for T 6 and T 62 tempers. Age at 360 F for 3 hours to get T5 temper.

Tempering		Not applicable.

Hardening		Hardens due to aging heat treatment and cold working. See "Aging".

Other Physical Props		Electrical conductivity 50% of copper.

Other Mechanical Props		Shear strength for various tempers is: O temper 10, ksi . T 5 temper 17 ksi. T 83 temper 22 ksi

Physical Data : [top]

Density (lb / cu. in.)	0.097
Specific Gravity	2.7
Melting Point (Deg F)	1150
Modulus of Elasticity Tension	10
Modulus of Elasticity Torsion	3

Form		Shapes-Extruded
Condition		O
Temper		68
Tensile Strength		13
Yield Strength		7
Brinnell		25
Form		Shapes-Extruded
Condition		T1
Temper		-320
Tensile Strength		34
Yield Strength		16
Elongation		44
Form		Shapes-Extruded
Condition		T1
Temper		-112
Tensile Strength		26
Yield Strength		15
Elongation		36
Form		Shapes-Extruded
Condition		T1
Temper		-18
Tensile Strength		24
Yield Strength		14
Elongation		34
Form		Shapes-Extruded
Condition		T1
Temper		68
Tensile Strength		22
Yield Strength		13
Elongation		20
Brinnell		42
Form		Shapes-Extruded
Condition		T1
Temper		75
Tensile Strength		22
Yield Strength		13
Elongation		33
Form		Shapes-Extruded
Condition		T1
Temper		212
Tensile Strength		22
Yield Strength		14
Elongation		18
Form		Shapes-Extruded
Condition		T1
Temper		300
Tensile Strength		21
Yield Strength		15
Elongation		20
Form		Shapes-Extruded
Condition		T1
Temper		400
Tensile Strength		9
Yield Strength		6.5
Elongation		40
Form		Shapes-Extruded
Condition		T1
Temper		500
Tensile Strength		4.5
Yield Strength		3.5
Elongation		75
Form		Shapes-Extruded
Condition		T1
Temper		600
Tensile Strength		3.2
Yield Strength		2.5
Elongation		80
Form		Shapes-Extruded
Condition		T1
Temper		700
Tensile Strength		2.3
Yield Strength		2
Elongation		105
Form		Shapes-Extruded
Condition		T4
Temper		68
Tensile Strength		25
Yield Strength		13
Elongation		22
Form		Shapes-Extruded
Condition		T5
Temper		-320
Tensile Strength		37
Yield Strength		24
Elongation		28
Form		Shapes-Extruded
Condition		T5
Temper		-112
Tensile Strength		29
Yield Strength		22
Elongation		24
Form		Shapes-Extruded
Condition		T5
Temper		-18
Tensile Strength		28
Yield Strength		22
Elongation		23
Form		Shapes-Extruded
Condition		T5
Temper		68
Tensile Strength		27
Yield Strength		21
Elongation		12
Brinnell		60
Form		Shapes-Extruded
Condition		T5
Temper		75
Tensile Strength		27
Yield Strength		21
Elongation		22
Form		Shapes-Extruded
Condition		T5
Temper		212
Tensile Strength		24
Yield Strength		20
Elongation		18
Form		Shapes-Extruded
Condition		T5
Temper		300
Tensile Strength		20
Yield Strength		18
Elongation		20
Form		Shapes-Extruded
Condition		T5
Temper		400
Tensile Strength		9
Yield Strength		6.5
Elongation		40
Form		Shapes-Extruded
Condition		T5
Temper		500
Tensile Strength		4.5
Yield Strength		3.5
Elongation		75
Form		Shapes-Extruded
Condition		T5
Temper		600
Tensile Strength		3.2
Yield Strength		2.5
Elongation		80
Form		Shapes-Extruded
Condition		T5
Temper		700
Tensile Strength		2.3
Yield Strength		2
Elongation		105
Form		Shapes-Extruded
Condition		T6
Temper		-320
Tensile Strength		47
Yield Strength		36
Elongation		24
Form		Shapes-Extruded
Condition		T6
Temper		-112
Tensile Strength		38
Yield Strength		33
Elongation		20
Form		Shapes-Extruded
Condition		T6
Temper		-18
Tensile Strength		36
Yield Strength		32
Elongation		19
Form		Shapes-Extruded
Condition		T6
Temper		68
Tensile Strength		35
Yield Strength		31
Elongation		12
Brinnell		73
Form		Shapes-Extruded
Condition		T6
Temper		75
Tensile Strength		35
Yield Strength		31
Elongation		18
Form		Shapes-Extruded
Condition		T6
Temper		212
Tensile Strength		31
Yield Strength		28
Elongation		15
Form		Shapes-Extruded
Condition		T6
Temper		300
Tensile Strength		21
Yield Strength		20
Elongation		20
Form		Shapes-Extruded
Condition		T6
Temper		400
Tensile Strength		9
Yield Strength		6.5
Elongation		40
Form		Shapes-Extruded
Condition		T6
Temper		500
Tensile Strength		4.5
Yield Strength		3.5
Elongation		75
Form		Shapes-Extruded
Condition		T6
Temper		600
Tensile Strength		3.3
Yield Strength		2.5
Elongation		80
Form		Shapes-Extruded
Condition		T6
Temper		700
Tensile Strength		2.3
Yield Strength		2
Elongation		105
Form		Shapes-Extruded
Condition		T83
Temper		68
Tensile Strength		37
Yield Strength		35
Elongation		9
Brinnell		82
Form		Shapes-Extruded
Condition		T831
Temper		68
Tensile Strength		30
Yield Strength		27
Elongation		10
Brinnell		70
Form		Shapes-Extruded
Condition		T832
Temper		68
Tensile Strength		42
Yield Strength		39
Elongation		12
Brinnell		95