AA 3003 H18 Aluminum Alloy – Exceptional Corrosion Resistance & Weldability

Aluminum AA 3003 is a popular alloy that offers customers very good atmospheric corrosion resistance and moderate strength. Aluminum 3003 offers good machinability for aluminum alloys, though it is not heat treatable. Unlike other aluminum alloys, AA 3003 is weldable by conventional welding methods. It also takes cold and hot working well and has generally better mechanical properties when compared to 1000 series aluminum alloys.

Properties

General

Property	Value	Condition	Related Standards
Density	2.73 g/cm³	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483

Mechanical

Property	Value	Condition	Related Standards	Comment
Bending Fatigue Strength	70.0 MPa	H18	AA Standards
Elastic modulus	69.0 GPa	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
Hardness, Brinell	55.0 [-]	H18	AA Standards
Plane-Strain Fracture Toughnes	22.0 - 35.0 MPa·√m			Typical for Wrought 3000 Series Aluminium
Poisson's ratio	0.33 [-]			Typical for Wrought 3000 Series Aluminium
Shear modulus	25.0 - 26.0 GPa			Typical for Wrought 3000 Series Aluminium
Tensile strength	185.0 MPa	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
	200.0 MPa	H18	AA Standards

Thermal

Property	Temperature	Value	Condition	Related Standards	Comment
Coefficient of thermal expansion	20 °C	2.3199999999999998e-05 1/K	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
	100 °C	2.3199999999999998e-05 1/K	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
Melting point		640.0 - 655.0 °C	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
Specific heat capacity		893.0 - 920.0 J/(kg·K)			Typical for Wrought 3000 Series Aluminium
Thermal conductivity		159.0 - 193.0 W/(m·K)	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	24000000.0 - 29000000.0 S/m	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
Electrical resistivity	3.45e-08 - 4.17e-08 Ω·m	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483

Chemical properties

Property	Value	Condition	Related Standards
Copper	0.05 - 0.2 %	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
Iron	0.70 %	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
Manganese	1.0 - 1.5 %	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
Silicon	0.6 %	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483
Zinc	0.1 %	H18	AA Standards, ASTM B209, ASTM B210, ASTM B211, ASTM B241, ASTM B313, ASTM B345, ASTM B483

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: not suitable (O, H12), poor (H14, H16, H25)
Workability	general (condition): good (O, H12), acceptable (H14, H25), poor(H16, H18)

AA 3003 Aluminum Alloy – Premium Grade H12 for Superior Corrosion Resistance AA 3003 Aluminum Alloy – High Corrosion Resistance, Good Machinability & Weldability

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