DIN 1725-1 Grade 3.4337 T8

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Description

The alloy Al99,8ZnMg belongs to the standardised aluminum shining materials. Aluminum alloys, which are based on aluminum with a given minimum purity, can be polished after mechanical polishing chemically or electrolytically to high gloss. For this alloy this purity lies at 99,8 % Al, because of its high Zn-content (3,8 to 4,6 %). For Saving the produced gloss degree, an afterwards anodising is necessary. The degree of arranged reflection (grade of gloss) depends again on the degree of purity and the anodising layer thickness. Strength grades up to F25 can be achieved by hot ageing. The alloy Al99,8ZnMg has a very good corrosion resistance and is well cold and hot formable. It is standardised only as extruded sheath (DIN 1748 T1 and T2). Application: For decoration goods (trim) and Bijouterie articles for metal goods of all kinds (e.g. building fittings, table-ware, flow pressed parts and for reflectors.

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValueConditionRelated StandardsShape

Density

20.0 °C

2.76 g/cm³

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Mechanical

PropertyTemperatureValueConditionRelated StandardsShapeComment

Elastic modulus

69.0 - 72.0 GPa

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Typical for Wrought 7000 Series Aluminium

Elongation

20.0 °C

12.0 %

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T8

DIN 1725-1, EN 573-3, EN 573-4

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A10

20.0 °C

14.0 %

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Hardness, Brinell

20.0 °C

80.0 [-]

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Plane-Strain Fracture Toughnes

22.0 - 35.0 MPa·√m

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Typical for Wrought 7000 Series Aluminium

Poisson's ratio

0.33 [-]

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Typical for Wrought 7000 Series Aluminium

Shear modulus

26.4 - 27.1 GPa

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Typical for Wrought 7000 Series Aluminium

Tensile strength

20.0 °C

250.0 MPa

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Thermal

PropertyValueComment

Coefficient of thermal expansion

2.1e-05 - 2.4e-05 1/K

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Typical for Wrought 7000 Series Aluminium

Melting point

465.0 - 655.0 °C

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Typical for Wrought 7000 Series Aluminium

Specific heat capacity

795.0 - 1050.0 J/(kg·K)

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Typical for Wrought 7000 Series Aluminium

Thermal conductivity

121.0 - 170.0 W/(m·K)

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Typical for Wrought 7000 Series Aluminium

Electrical

PropertyValueComment

Electrical conductivity

18000000.0 - 34000000.0 S/m

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Typical for Wrought 7000 Series Aluminium

Electrical resistivity

2.9e-08 - 5.6e-08 Ω·m

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Typical for Wrought 7000 Series Aluminium

Chemical properties

PropertyValueConditionRelated StandardsShape

Chromium

0.1

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Copper

0.2

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Iron

0.1

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Magnesium

0.7 - 1.2 %

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Manganese

0.05

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Silicon

0.1

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Titanium

0.02

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Zinc

3.8 - 4.6 %

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Zirconium

0.15

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T8

DIN 1725-1, EN 573-3, EN 573-4

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Technological properties

Property
Brazing

Excellent