DIN 1725-1 Grade 3.4345 T6 Aluminum Alloy – High Strength & Corrosion Resistance

The alloy AlZnMgCu0,5 belongs to the aluminum materials, which achieve very high mechanical strength. With hot ageing the strength grade F 49 is attainable. This alloy is good splinter-giving machinably. The alloy is weldable with consideration of certain conditions, especially a heat influence zone with small strength appears there. One should not weld therefore if possible. A good corrosion resistance can be only guaranteed, if an appropriate protective surface layer is present. The corrosion resistance improves noticeably also by hot ageing. Roll-plating of sheet metals of this alloy e.g. with AlZn1 will support the small corrosion resistance with exhaust the high mechanical strenght fully. Thus the area of application extends noticeably. This alloy possesses well splinter-giving workability. Heat treatment for hardening: solution annealing: 470 to 480 °C, quenching in water hot ageing: 12 to 24 h at 115 to 125 °C, 4 to 6 h at 165 to 180 °C (two stage ageing) cold ageing is uncommon Application: In mechanical engineering for devices, tools. Predominantly tension-poor strained sheet metals for baseplates, head and stamp retaining plates as well as in the automobile engineering for safety-related parts and bumpers.

Properties

General

Property	Temperature	Value	Condition	Related Standards	Shape
Density		2.78 g/cm³	T6	EN 573-3, EN 485, EN 754, EN 755
	20.0 °C	2.78 g/cm³	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Elastic modulus		70.0 GPa	T6	EN 573-3, EN 485, EN 754, EN 755
	20.0 °C	72.0 GPa	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
Elongation		3.0 %	T6	EN 573-3, EN 485		A100
		5.0 %	T6	EN 573-3, EN 485		A100
		5.0 %	T6	EN 573-3, EN 755		A50
		6.0 %	T6	EN 573-3, EN 754		A50
		7.0 %	T6	EN 573-3, EN 485, EN 755		A100
		8.0 %	T6	EN 573-3, EN 485, EN 754		A100
		8.0 %	T6	EN 573-3, EN 485, EN 754		A50
	20.0 °C	2.0 %	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	20.0 °C	3.0 %	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	20.0 °C	4.0 %	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	20.0 °C	6.0 %	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
Hardness, Brinell		121.0 [-]	T6	EN 573-3, EN 485
		127.0 [-]	T6	EN 573-3, EN 485
		133.0 [-]	T6	EN 573-3, EN 485
	20.0 °C	130.0 [-]	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	20.0 °C	135.0 [-]	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
Plane-Strain Fracture Toughnes		22.0 - 35.0 MPa·√m				Typical for Wrought 7000 Series Aluminium
Poisson's ratio		0.33 [-]				Typical for Wrought 7000 Series Aluminium
Shear modulus	20.0 °C	27.5 GPa	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
Tensile strength		410.0 MPa	T6	EN 573-3, EN 485
		430.0 MPa	T6	EN 573-3, EN 485
		450.0 MPa	T6	EN 573-3, EN 485
		460.0 MPa	T6	EN 573-3, EN 754
		470.0 MPa	T6	EN 573-3, EN 755
		490.0 MPa	T6	EN 573-3, EN 755
	20.0 °C	440.0 MPa	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	20.0 °C	450.0 MPa	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	20.0 °C	460.0 MPa	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	20.0 °C	470.0 MPa	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	20.0 °C	480.0 MPa	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging

Thermal

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Coefficient of thermal expansion	20 °C	2.36e-05 1/K	T6	EN 573-3, EN 485, EN 754, EN 755
	100 °C	2.36e-05 1/K	T6	EN 573-3, EN 485, EN 754, EN 755
Melting point		480.0 - 640.0 °C	T6	EN 573-3, EN 485, EN 754, EN 755
Specific heat capacity		795.0 - 1050.0 J/(kg·K)				Typical for Wrought 7000 Series Aluminium
Thermal conductivity	20.0 °C	130.0 - 160.0 W/(m·K)	T6	DIN 1725-1, EN 573-3, EN 573-4, EN 485, EN 754, EN 755	Forging

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape
Electrical conductivity	20.0 °C	19000000.0 - 23000000.0 S/m	T6	DIN 1725-1, EN 573-3, EN 573-4, EN 485, EN 754, EN 755	Forging
Electrical resistivity		4.35e-08 - 5.26e-08 Ω·m	T6	EN 573-3, EN 485, EN 754, EN 755

Chemical properties

Property	Value	Condition	Related Standards	Shape
Chromium	0.1 - 0.3 %	T6	DIN 1725-1, EN 573-3, EN 573-4, EN 485, EN 754, EN 755	Forging
Copper	0.5 - 1.0 %	T6	DIN 1725-1, EN 573-3, EN 573-4, EN 485, EN 754, EN 755	Forging
Iron	0.5 %	T6	DIN 1725-1, EN 573-3, EN 573-4	Forging
	0.50 %	T6	EN 573-3, EN 485, EN 754, EN 755
Magnesium	2.6 - 3.7 %	T6	DIN 1725-1, EN 573-3, EN 573-4, EN 485, EN 754, EN 755	Forging
Manganese	0.1 - 0.4 %	T6	DIN 1725-1, EN 573-3, EN 573-4, EN 485, EN 754, EN 755	Forging
Silicon	0.5 %	T6	DIN 1725-1, EN 573-3, EN 573-4, EN 485, EN 754, EN 755	Forging
Zinc	4.3 - 5.2 %	T6	DIN 1725-1, EN 573-3, EN 573-4, EN 485, EN 754, EN 755	Forging

Technological properties

Property
Anodizing	decorative: not suitable, Protective: good
Brazing	hard brazing (with flux/ without flux): not suitable / not suitable, friction soldering: not suitable, soft brazing with flux: not suitable
Corrosion properties	Seawater: poor, weathering: sufficient
Workability	Bending / Spinning (cold): poor (O) / not suitable, Impact extrusion (cold): not suitable, Deep drawing / upsetting (Condition) not suitable / not suitable

EN 573-3 Grade 3.3545 H14 – High-Strength, Corrosion-Resistant Aluminum Alloy EN 573-3 Grade 3.4365 T62: Premium High-Strength Aluminum Alloy for Aerospace

Metal