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High-Strength 3.1355 Aluminum Alloy (DIN 1725-1 F44) – Ideal for Aerospace Applications

Aluminum DIN 3.1355, known for its use in aircraft industry, is an alloy that offers excellent strength. When in the annealed condition it is readily formed and has good machinability. Though it has a relatively low level of corrosion resistance, it can be machined to a high finish.

Properties

General

PropertyTemperatureValueConditionRelated Standards

Density

20.0 °C

2.77 g/cm³

F44

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

Mechanical

PropertyTemperatureValueConditionRelated StandardsComment

Elastic modulus

20.0 °C

70.0 - 74.5 GPa

F44

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

Elongation

-196.0 °C

19.0 %

F44

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

-80.0 °C

19.0 %

F44

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

-28.0 °C

19.0 %

F44

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

20.0 °C

19.0 %

F44

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

100.0 °C

19.0 %

F44

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

150.0 °C

17.0 %

F44

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

200.0 °C

27.0 %

F44

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

260.0 °C

55.0 %

F44

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

315.0 °C

75.0 %

F44

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

370.0 °C

100.0 %

F44

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

Plane-Strain Fracture Toughnes

22.0 - 35.0 MPa·√m

Typical for Wrought 2000 Series Aluminium

Poisson's ratio

0.33 [-]

Typical for Wrought 2000 Series Aluminium

Shear modulus

20.0 °C

27.0 - 28.0 GPa

F44

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

Tensile strength

-196.0 °C

580.0 MPa

F44

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

-80.0 °C

490.0 MPa

F44

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

-28.0 °C

475.0 MPa

F44

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

20.0 °C

470.0 MPa

F44

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

100.0 °C

435.0 MPa

F44

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

150.0 °C

310.0 MPa

F44

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

200.0 °C

180.0 MPa

F44

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

260.0 °C

75.0 MPa

F44

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

315.0 °C

50.0 MPa

F44

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

370.0 °C

35.0 MPa

F44

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

Thermal

PropertyTemperatureValueConditionRelated StandardsComment

Coefficient of thermal expansion

1.6e-05 - 2.4e-05 1/K

Typical for Wrought 2000 Series Aluminium

Melting point

500.0 - 650.0 °C

Typical for Wrought 2000 Series Aluminium

Specific heat capacity

20.0 °C

875.0 J/(kg·K)

F44

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

Thermal conductivity

20.0 °C

130.0 - 150.0 W/(m·K)

F44

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

Electrical

PropertyTemperatureValueConditionRelated StandardsComment

Electrical conductivity

20.0 °C

18000000.0 - 21000000.0 S/m

F44

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

Electrical resistivity

3.4e-08 - 6e-08 Ω·m

Typical for Wrought 2000 Series Aluminium

Chemical properties

PropertyValueConditionRelated Standards

Chromium

0.1

F44

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

Copper

3.8 - 4.9 %

F44

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

Iron

0.5

F44

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

Magnesium

1.2 - 1.8 %

F44

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

Manganese

0.3 - 0.9 %

F44

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

Silicon

0.5

F44

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

Titanium

0.15

F44

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

Zinc

0.25

F44

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

Technological properties

Property
Workability

Moderate Workability


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