DIN 1725-1 Alloy 3.3326 H18 – Superior Seawater Corrosion Resistance & Strength

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. From the AlMg alloys the mark AlMg1,5 has to exhibit only relatively small mechanical properties. Standardised semi-finished material only for tubes in accordance to DIN 1746 and for extruded profiles according to DIN 1748. Application: Ferrules for wires rope in accordance to DIN 3093. In the civil engineering for carrying constructions, for transport containers. In electro-technology for antennas and parabolic reflectors.

Properties

General

Property	Temperature	Value	Condition	Related Standards	Shape
Density		2.69 g/cm³	H18	EN 573-3, EN 1301
	20.0 °C	2.68 g/cm³	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Elastic modulus		70.0 GPa	H18	EN 573-3, EN 1301
	20.0 °C	65.0 - 70.0 GPa	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube
Elongation		3.0 %	H18	EN 573-3, EN 1301
	20.0 °C	2.0 %	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube	A10
	20.0 °C	3.0 %	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube
Hardness, Brinell	20.0 °C	60.0 [-]	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube
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	26.5 GPa	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube
Tensile strength		245.0 MPa	H18	EN 573-3, EN 1301
	20.0 °C	220.0 MPa	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube

Thermal

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Coefficient of thermal expansion	20 °C	2.38e-05 1/K	H18	EN 573-3, EN 1301
	100 °C	2.38e-05 1/K	H18	EN 573-3, EN 1301
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	921.0 J/(kg·K)	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube
Thermal conductivity	20.0 °C	135.0 - 167.0 W/(m·K)	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Electrical conductivity	20.0 °C	22000000.0 - 26000000.0 S/m	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube
Electrical resistivity		3.3e-08 - 5e-08 Ω·m				Typical for Wrought 5000 Series Aluminium

Chemical properties

Property	Value	Condition	Related Standards	Shape
Chromium	0.3 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 1301	Tube
Copper	0.05 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 1301	Tube
Iron	0.45 %	H18	DIN 1725-1, EN 573-3, EN 573-4	Tube
	0.45 %	H18	EN 573-3, EN 1301
Magnesium	1.4 - 2.1 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 1301	Tube
Manganese	0.25 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 1301	Tube
Silicon	0.3 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 1301	Tube
Titanium	0.1 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 1301	Tube
Zinc	0.2 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 1301	Tube

Technological properties

Property
Workability	Good workability.

Property

Workability

Good workability.

DIN 1725-1 Grade 3.3326 H14 – High-Strength Marine-Grade Magnesium Alloy WL 3.3354 Grade F – High‑Strength, Corrosion‑Resistant Aluminum Alloy

Metal