AA 6063 T1 Aluminum Alloy – Standards & Specifications

Aluminum AA 6063 is an architectural alloy that offers users a high resistance to corrosion and excellent finishing characteristics. Easy to extrude with fair machinability, AA 6063 can be both hot and cold formed and is commonly available as T6 temper as well as T4 temper.

Properties

General

Property	Value	Condition	Related Standards
Density	2.7 g/cm³	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345

Mechanical

Property	Value	Condition	Related Standards	Comment
Bending Fatigue Strength	60.0 MPa	T1	AA Standards
Elastic modulus	69.0 GPa	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Hardness, Brinell	42.0 [-]	T1	AA Standards
Plane-Strain Fracture Toughnes	22.0 - 35.0 MPa·√m			Typical for Wrought 6000 Series Aluminium
Poisson's ratio	0.33 [-]			Typical for Wrought 6000 Series Aluminium
Shear modulus	26.0 - 26.5 GPa			Typical for Wrought 6000 Series Aluminium
Tensile strength	110.0 MPa	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
	115.0 MPa	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
	150.0 MPa	T1	AA Standards

Thermal

Property	Temperature	Value	Condition	Related Standards	Comment
Coefficient of thermal expansion	20 °C	2.3399999999999996e-05 1/K	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
	100 °C	2.3399999999999996e-05 1/K	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Melting point		615.0 - 655.0 °C	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Specific heat capacity		887.0 - 963.0 J/(kg·K)			Typical for Wrought 6000 Series Aluminium
Thermal conductivity		193.0 - 218.0 W/(m·K)	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	29000000.0 - 34000000.0 S/m	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Electrical resistivity	2.94e-08 - 3.45e-08 Ω·m	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345

Chemical properties

Property	Value	Condition	Related Standards
Chromium	0.1 %	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Copper	0.1 %	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Iron	0.35 %	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Magnesium	0.45 - 0.9 %	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Manganese	0.1 %	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Silicon	0.2 - 0.6 %	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Titanium	0.1 %	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345
Zinc	0.1 %	T1	AA Standards, ASTM B221, ASTM B241, ASTM B345

Technological properties

Property
Brazing	general: possible with commercial processes and methods
Corrosion properties	Stress corrosion cracking: no damage during operation and laboratory tests, general: very good, without protection in industrial or seawater atmosphere
General machinability	General: poor (T1, T4), sufficient (T5, T452, T6, T83, T831, T832)
Workability	general (condition): acceptable (T1, T4, T5, T452), poor(T6, T83, T831, T832)

DIN 1725‑1 Grade 3.3206 T5 – High‑Strength, Corrosion‑Resistant Aluminium Alloy EN 573-3 Grade AW-6063 T66 Aluminum Alloy – Superior Corrosion Resistance & Excellent Finish

Metal