EN 573-3 Grade 3.3545 H18: High-Strength, Corrosion-Resistant Aluminum Alloy

Aluminum DIN 3.3545 is structural alloy, which offers users strong corrosion resistance and high electrical conductivity. Offering higher strength levels than 5052 or 5083, DIN 3.3545 becomes stronger with stain hardening and cold working, all while remaining a cost-effective choice. It can be welded with conventional methods, though electric arc welding is preferred.

Properties

General

Property	Value	Condition	Related Standards
Density	2.66 g/cm³	H18	EN 573-3, EN 1592, EN 485

Mechanical

Property	Value	Condition	Related Standards	Comment
Elastic modulus	71.0 GPa	H18	EN 573-3, EN 1592, EN 485
Hardness, Brinell	104.0 [-]	H18	EN 573-3, EN 485
Plane-Strain Fracture Toughnes	22.0 - 35.0 MPa·√m			Typical for Wrought 5000 Series Aluminium
Poisson's ratio	0.33 [-]			Typical for Wrought 5000 Series Aluminium
Shear modulus	26.7 GPa	H18	EN 573-3, EN 1592, EN 485
Tensile strength	345.0 MPa	H18	EN 573-3, EN 485
	350.0 MPa	H18	EN 573-3, EN 1592

Thermal

Property	Temperature	Value	Condition	Related Standards	Comment
Coefficient of thermal expansion	-50 °C	2.2e-05 1/K	H18	EN 573-3, EN 1592, EN 485
	20 °C	2.2e-05 1/K	H18	EN 573-3, EN 1592, EN 485
	20 °C	2.38e-05 1/K	H18	EN 573-3, EN 1592, EN 485
	20 °C	2.4699999999999997e-05 1/K	H18	EN 573-3, EN 1592, EN 485
	20 °C	2.58e-05 1/K	H18	EN 573-3, EN 1592, EN 485
	100 °C	2.38e-05 1/K	H18	EN 573-3, EN 1592, EN 485
	200 °C	2.4699999999999997e-05 1/K	H18	EN 573-3, EN 1592, EN 485
	300 °C	2.58e-05 1/K	H18	EN 573-3, EN 1592, EN 485
Max service temperature		150.0 °C			Typical for Wrought 5000 Series Aluminium
Melting point		585.0 - 641.0 °C	H18	EN 573-3, EN 1592, EN 485
		585.0 - 640.0 °C	H18	EN 573-3, EN 1592, EN 485
Specific heat capacity		900.0 J/(kg·K)	H18	EN 573-3, EN 1592, EN 485
Thermal conductivity		120.0 - 140.0 W/(m·K)	H18	EN 573-3, EN 1592, EN 485
		126 W/(m·K)	H18	EN 573-3, EN 1592, EN 485

Electrical

Property	Value	Condition	Related Standards
Electrical conductivity	17000000.0 - 19000000.0 S/m	H18	EN 573-3, EN 1592, EN 485
	18000000.0 S/m	H18	EN 573-3, EN 1592, EN 485
Electrical resistivity	5.26e-08 - 5.88e-08 Ω·m	H18	EN 573-3, EN 1592, EN 485
	5.56e-08 Ω·m	H18	EN 573-3, EN 1592, EN 485

Chemical properties

Property	Value	Condition	Related Standards
Chromium	0.05 - 0.25 %	H18	EN 573-3, EN 1592, EN 485
Copper	0.1 %	H18	EN 573-3, EN 1592, EN 485
Iron	0.50 %	H18	EN 573-3, EN 1592, EN 485
Magnesium	3.5 - 4.5 %	H18	EN 573-3, EN 1592, EN 485
Manganese	0.2 - 0.7 %	H18	EN 573-3, EN 1592, EN 485
Silicon	0.4 %	H18	EN 573-3, EN 1592, EN 485
Titanium	0.15 %	H18	EN 573-3, EN 1592, EN 485
Zinc	0.25 %	H18	EN 573-3, EN 1592, EN 485

Technological properties

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

Property

Anodizing

decorative: acceptable, Protective: very good

Brazing

hard brazing (with flux/ without flux): poor / sufficient, friction soldering: acceptable, soft brazing with flux: poor

Workability

Bending / Spinning (cold): good / sufficient, Impact extrusion (cold): sufficient, Deep drawing / upsetting (Condition) good (O) / good (O)

EN 573-3 Grade 3.3545 H16 Aluminum: Superior Strength, Corrosion Resistance, and Conductivity Aluminum DIN 3.3545 H224: Premium Corrosion‑Resistant Structural Alloy

Metal