DIN 1725-1 Grade 3.3316 H18 – High-Strength, Corrosion-Resistant Aluminum-Magnesium Alloy

The alloys are 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 sheet metal and strips with thickness: > 0.35 mm in accordance to DIN 1745. Application: The main application lies in the building industry. In the building industry for lamella net curtains, rolling shutter, roll gates, in food industry (including table-ware) and for transport containers.

Properties

General

Property	Temperature	Value	Condition	Related Standards	Shape
Density		2.68 g/cm³	H18	EN 573-3, EN 485
		2.69 g/cm³	H18	EN 573-3, EN 485
	20.0 °C	2.69 g/cm³	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Bending angle 90°		1.5 °/t	H18	EN 573-3, EN 485
		2.5 °/t	H18	EN 573-3, EN 485
Elastic modulus		69.0 GPa	H18	EN 573-3, EN 485
		70.0 GPa	H18	EN 573-3, EN 485
	20.0 °C	70.0 GPa	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Elongation		1.0 %	H18	EN 573-3, EN 485		A50
		2.0 %	H18	EN 573-3, EN 485		A50
	20.0 °C	2.0 %	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat	A10
	20.0 °C	3.0 %	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Hardness, Brinell		68.0 [-]	H18	EN 573-3, EN 485
	20.0 °C	65.0 [-]	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	26.5	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Tensile strength		220.0 MPa	H18	EN 573-3, EN 485
	20.0 °C	225.0 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	20 °C	2.38e-05 1/K	H18	EN 573-3, EN 485
	100 °C	2.38e-05 1/K	H18	EN 573-3, EN 485
Max service temperature		150.0 °C				Typical for Wrought 5000 Series Aluminium
Melting point		620.0 - 650.0 °C	H18	EN 573-3, EN 485
		625.0 - 650.0 °C	H18	EN 573-3, EN 485
Specific heat capacity		879.0 - 963.0 J/(kg·K)				Typical for Wrought 5000 Series Aluminium
Thermal conductivity		170.0 - 190.0 W/(m·K)	H18	EN 573-3, EN 485
		193 W/(m·K)	H18	EN 573-3, EN 485
	20.0 °C	160.0 - 200.0 W/(m·K)	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape
Electrical conductivity		23000000.0 - 26000000.0 S/m	H18	EN 573-3, EN 485
		29000000.0 S/m	H18	EN 573-3, EN 485
	20.0 °C	28000000.0 - 30000000.0 S/m	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
Electrical resistivity		3.45e-08 Ω·m	H18	EN 573-3, EN 485
		3.85e-08 - 4.35e-08 Ω·m	H18	EN 573-3, EN 485

Chemical properties

Property	Value	Condition	Related Standards	Shape
Chromium	0.1 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 485	Flat
Copper	0.05 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 485	Flat
Iron	0.45 %	H18	DIN 1725-1, EN 573-3, EN 573-4	Flat
	0.45 %	H18	EN 573-3, EN 485
Magnesium	1.1 - 1.7 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 485	Flat
Manganese	0.15 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 485	Flat
Silicon	0.4 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 485	Flat
Zinc	0.2 %	H18	DIN 1725-1, EN 573-3, EN 573-4, EN 485	Flat

Technological properties

Property
Workability	Good workability.

Property

Workability

Good workability.

DIN 1725-1 Grade 3.3316 H16 – High‑Performance Marine‑Grade Al‑Mg Alloy EN 10025 S235JRG2C Steel – As-Rolled (+AR), Ideal for Cold Forming & Welding

Metal