EN 573-3 Grade 3.3211 T89 – Premium Anodizable Aluminium Alloy for Corrosion Resistance

DIN 3.3211 is a readily available alloy that has good surface finish and ability to be anodized.Easy of weldability and brazability with nice surface finish. Resistance to corrosion from seawater and atmospheric conditions. Suitable for hot forging.

Properties

General

Property	Value	Condition	Related Standards
Density	2.7 g/cm³	T89	EN 573-3, EN 1301

Mechanical

Property	Value	Condition	Related Standards	Comment
Elastic modulus	69.0 GPa	T89	EN 573-3, EN 1301
	70.0 GPa	T89	EN 573-3, EN 1301
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	26.3 GPa	T89	EN 573-3, EN 1301
Tensile strength	300.0 MPa	T89	EN 573-3, EN 1301

Thermal

Property	Temperature	Value	Condition	Related Standards	Comment
Coefficient of thermal expansion	20 °C	2.3e-05 1/K	T89	EN 573-3, EN 1301
	20 °C	2.36e-05 1/K	T89	EN 573-3, EN 1301
	100 °C	2.3e-05 1/K	T89	EN 573-3, EN 1301
	100 °C	2.36e-05 1/K	T89	EN 573-3, EN 1301
Melting point		580.0 - 640.0 °C	T89	EN 573-3, EN 1301
		580.0 - 650.0 °C	T89	EN 573-3, EN 1301
Specific heat capacity		887.0 - 963.0 J/(kg·K)			Typical for Wrought 6000 Series Aluminium
Thermal conductivity		155.0 - 180.0 W/(m·K)	T89	EN 573-3, EN 1301
		170.0 - 200.0 W/(m·K)	T89	EN 573-3, EN 1301

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	22000000.0 - 30000000.0 S/m	T89	EN 573-3, EN 1301
	23000000.0 - 27000000.0 S/m	T89	EN 573-3, EN 1301
Electrical resistivity	3.33e-08 - 4.55e-08 Ω·m	T89	EN 573-3, EN 1301
	3.7e-08 - 4.35e-08 Ω·m	T89	EN 573-3, EN 1301

Chemical properties

Property	Value	Condition	Related Standards
Chromium	0.04 - 0.35 %	T89	EN 573-3, EN 1301
Copper	0.15 - 0.4 %	T89	EN 573-3, EN 1301
Iron	0.70 %	T89	EN 573-3, EN 1301
Magnesium	0.8 - 1.2 %	T89	EN 573-3, EN 1301
Manganese	0.15 %	T89	EN 573-3, EN 1301
Silicon	0.4 - 0.8 %	T89	EN 573-3, EN 1301
Titanium	0.15 %	T89	EN 573-3, EN 1301
Zinc	0.25 %	T89	EN 573-3, EN 1301

Technological properties

Property
Anodizing	decorative: acceptable, Protective: very good
Brazing	hard brazing (with flux/ without flux): good / sufficient, friction soldering: good, soft brazing with flux: acceptable
Corrosion properties	Seawater: good to acceptable, weathering: good
Workability	Bending / Spinning (cold): acceptable (T3, T4) / good (O), Impact extrusion (cold): good (O), Deep drawing / upsetting (Condition) good (O) / good (O)

DIN 1725-1 Grade 3.3211 (T6511) – Premium Aluminium Alloy with Superior Weldability DIN 1725‑1 Grade 3.3345 H18 – High Corrosion Resistance Magnesium Alloy

Metal