DIN 1725‑1 Grade 3.3206 T5 – High‑Strength, Corrosion‑Resistant Aluminium Alloy

This cold and hot hardenable material reaches mechanical strength from 200 to 250 MPa with A5-elongation at break of approx. 10 %. In the warm and cold-hardened state this alloy is only limited ductile, in the soft material condition however well. Weldability, corrosion resistance and anodising of this material are good. Due to the special suitability of this alloy for the extrusion those are present lot of profile cross-sectional shapes for application in static loading case in the automobile construction or in the building industry. The company Erbsloeh Aluminum leads under evenly this material number among other things the trade name AlMgSi0,3. It pay attention that only two further trade names (6030 and 466) of this company to this designation are to be assigned. Heat treatment for hardening: solution annealing: 525 to 540 °C, quenching on air or in water cold ageing: 5 to 8 d at ambient temperatures hot ageing: 4 to 16 h at 155 to 190 °C. Application: Window, doors, window walls, front plates, roller shutter, roll gates, bearing constructions, heat exchanger (gilled pipes), commercial motor vehicle superstructures, machine tables, metal goods, food industry, equipment of rail-mounted vehicles (stroke sun roofs, railroad car doors), optics, reflectors, operating sectors of hydraulic/pneumatics in mechanical engineering, trunk superstructures in the boat and shipbuilding, sail masts, road signs, trim in the automobile engineering, shower cubicles, fences and partitions, pipings in compressed gas tanks, camping furniture.

Properties

General

Property	Temperature	Value	Condition	Related Standards
Density		2.7 g/cm³	T5	EN 573-3, EN 755
	20.0 °C	2.7 g/cm³	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Bending Fatigue Strength		80.0 MPa	T5	EN 573-3, EN 755
Elastic modulus		69.5 GPa	T5	EN 573-3, EN 755
	20.0 °C	67.0 GPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
Elongation		6.0 %	T5	EN 573-3, EN 755		A50
		8.0 %	T5	EN 573-3, EN 755		A100
	20.0 °C	16.0 %	T5	DIN 1725-1	Seamless Tube
	50.0 °C	16.0 %	T5	DIN 1725-1	Seamless Tube
	100.0 °C	16.0 %	T5	DIN 1725-1	Seamless Tube
Plane-Strain Fracture Toughnes		22.0 - 35.0 MPa·√m				Typical for Wrought 6000 Series Aluminium
Poisson's ratio		0.33 [-]				Typical for Wrought 6000 Series Aluminium
Shear modulus		26.1 GPa	T5	EN 573-3, EN 755
	20.0 °C	25.0 GPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
Tensile strength		140.0 MPa	T5	EN 573-3, EN 755
		160.0 MPa	T5	EN 573-3, EN 755
	20.0 °C	215.0 MPa	T5	DIN 1725-1	Seamless Tube
	20.0 °C	246.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
	50.0 °C	210.0 MPa	T5	DIN 1725-1	Seamless Tube
	100.0 °C	200.0 MPa	T5	DIN 1725-1	Seamless Tube
	100.0 °C	232.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
	150.0 °C	152.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
	200.0 °C	63.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
	250.0 °C	35.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
	320.0 °C	18.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
	370.0 °C	14.0 MPa	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4

Thermal

Property	Temperature	Value	Condition	Related Standards
Coefficient of thermal expansion	-50 °C	2.18e-05 1/K	T5	EN 573-3, EN 755
	20 °C	2.18e-05 1/K	T5	EN 573-3, EN 755
	20 °C	2.3399999999999996e-05 1/K	T5	EN 573-3, EN 755
	20 °C	2.45e-05 1/K	T5	EN 573-3, EN 755
	20 °C	2.56e-05 1/K	T5	EN 573-3, EN 755
	100 °C	2.3399999999999996e-05 1/K	T5	EN 573-3, EN 755
	200 °C	2.45e-05 1/K	T5	EN 573-3, EN 755
	300 °C	2.56e-05 1/K	T5	EN 573-3, EN 755
Melting point		585.0 - 650.0 °C	T5	EN 573-3, EN 755
Specific heat capacity		898.0 J/(kg·K)	T5	EN 573-3, EN 755
Thermal conductivity		200.0 - 220.0 W/(m·K)	T5	EN 573-3, EN 755
	20.0 °C	220.0 W/(m·K)	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4

Electrical

Property	Temperature	Value	Condition	Related Standards
Electrical conductivity		34000000.0 - 38000000.0 S/m	T5	EN 573-3, EN 755
	20.0 °C	30000000.0 - 32000000.0 S/m	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4
Electrical resistivity		2.63e-08 - 2.94e-08 Ω·m	T5	EN 573-3, EN 755

Chemical properties

Property	Value	Condition	Related Standards	Shape
Chromium	0.05 %	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4, EN 755	Seamless Tube
Copper	0.1 %	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4, EN 755	Seamless Tube
Iron	0.1 - 0.3 %	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4, EN 755	Seamless Tube
Magnesium	0.35 - 0.6 %	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4, EN 755	Seamless Tube
Manganese	0.1 %	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4, EN 755	Seamless Tube
Silicon	0.3 - 0.6 %	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4, EN 755	Seamless Tube
Titanium	0.1 %	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4, EN 755	Seamless Tube
Zinc	0.15 %	T5	DIN 1725-1, EN 573-3, EN 573-4, VdTÜV WB 492, VdTÜV WB 420-4, EN 755	Seamless Tube

Technological properties

Property
Anodizing	decorative: EQ: sehr gut, Protective: very good
Brazing	hard brazing (with flux/ without flux): very good / good, friction soldering: very good, soft brazing with flux: good
Corrosion properties	Seawater: good, weathering: very good
Workability	Bending / Spinning (cold): acceptable (T3, T4) / -, Impact extrusion (cold): good (O), Deep drawing / upsetting (Condition) - / good (O)

DIN 1725-1 Grade 3.3206 H14 – High‑Strength, Corrosion‑Resistant, Weldable Alloy AA 6063 T1 Aluminum Alloy – Standards & Specifications

Metal