DIN 1725‑1 Grade 3.3345 H18 – High Corrosion Resistance Magnesium Alloy

The alloy is characterised by a good corrosion resistance. It is sea water steady and resistant to saline atmosphere. The Mg content increases the strength, but the cold forming capacity decreases. The material is nature hard, i.e. only by a cold forming and not by a purposeful heat treatment a strength increase can be attained. It is well polishable and anodisable. The splinter-giving machinability becomes better with increasing Mg content, just as the weldability. The material is sensitive to intergranular corrosion. To inhibit the inclination of the intergranular corrosion in the technology a purposeful addition of Mn and/or Cr can be applied or an appropriate heat treatment, too. It is standardised as semi-finished material according to DIN 1788 as sheet metal and strip with max. 35 mm thickness). Application: Predominantly for packing (latch volume according to DIN 59606).

Properties

General

Property	Temperature	Value	Condition	Related Standards	Shape
Density	20.0 °C	2.65 g/cm³	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Elastic modulus	20.0 °C	72.0	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
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	20.0 °C	27.0	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Tensile strength	20.0 °C	350.0 - 390.0 MPa	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat

Thermal

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Coefficient of thermal expansion		2.2e-05 - 2.5e-05 1/K				Typical for Wrought 5000 Series Aluminium
Max service temperature		150.0 °C				Typical for Wrought 5000 Series Aluminium
Melting point		560.0 - 655.0 °C				Typical for Wrought 5000 Series Aluminium
Specific heat capacity	20.0 °C	904.0 J/(kg·K)	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Thermal conductivity	20.0 °C	140.0	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Electrical conductivity	20.0 °C	19000000.0	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Electrical resistivity		3.3e-08 - 5e-08 Ω·m				Typical for Wrought 5000 Series Aluminium

Chemical properties

Property	Value	Condition	Related Standards	Shape
Chromium	0.15	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Copper	0.15	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Iron	0.35	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Magnesium	4.0 - 5.0 %	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Manganese	0.15	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Silicon	0.2	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Titanium	0.1	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Zinc	0.25	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat

Technological properties

Property
Workability	Good workability.

Property

Workability

Good workability.

EN 573-3 Grade 3.3211 T89 – Premium Anodizable Aluminium Alloy for Corrosion Resistance DIN 1725-1 Grade 3.3345 H1x: High-Strength, Corrosion-Resistant Magnesium Alloy

Metal