WL 3.1924-1 Grade 3.1924 T651 – Premium AlCuMgFeNi Alloy for Aircraft Construction
Alloy AlCu2MgNi (AlCuMgFeNi) is an especially for aircraft construction modified alloy of type AlCuMg. Beside 2,5 % Cu it contains 1,5 % Mg as well as 1,1 % Fe and Ni. It is a natural and artificial ageable, high-strength alloy and achieves tensile strength values up to 430MPa at A5-ductile yiled of 3 to 8%. Heat-resistance properties of this alloy are enhancable by Fe- and Ni-content what represents the dominating application attribute. Heat-treatment instructions have to be most accurately adhered in order to warrant high heat-strength up to 250 deg. C. Usual semi-finished forms are thick plates, rods as well as die and free-form forged parts. This material has a high machinability, anodizability and hot-workability. It is cold-workable in soft condition resp. 2 h after solution annealing only. The alloy is not suitable for welding. Its corrosion resistance is satisfactory only. Application: in aircraft construction for large structure and power plant parts.
Properties
General
| Property | Value | Comment |
|---|---|---|
Density | 2.75 - 2.84 g/cm³ | Typical for Wrought 2000 Series Aluminium |
Mechanical
| Property | Temperature | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|---|
Elastic modulus | 70.0 - 73.0 GPa | Typical for Wrought 2000 Series Aluminium | ||||
Hardness, Brinell | 20.0 °C | 125.0 [-] | T651 | WL 3.1924-1 | Plate | Transverse |
20.0 °C | 125.0 [-] | T651 | WL 3.1924-1 | Rod | ||
Plane-Strain Fracture Toughnes | 20.0 °C | 17.7 - 21.2 MPa·√m | T651 | WL 3.1924-1 | ||
20.0 °C | 17.7 - 19.3 MPa·√m | T651 | WL 3.1924-1 | |||
20.0 °C | 17.7 MPa·√m | T651 | WL 3.1924-1 | |||
20.0 °C | 19.3 - 21.2 MPa·√m | T651 | WL 3.1924-1 | |||
20.0 °C | 19.3 MPa·√m | T651 | WL 3.1924-1 | |||
20.0 °C | 21.2 MPa·√m | T651 | WL 3.1924-1 | |||
Poisson's ratio | 0.33 [-] | Typical for Wrought 2000 Series Aluminium | ||||
Shear modulus | 26.0 - 27.5 GPa | Typical for Wrought 2000 Series Aluminium | ||||
Tensile strength | 20.0 °C | 390.0 MPa | T651 | WL 3.1924-1 | Plate | Transverse |
20.0 °C | 400.0 MPa | T651 | WL 3.1924-1 | Plate | Transverse | |
20.0 °C | 405.0 MPa | T651 | WL 3.1924-1 | Plate | Transverse | |
20.0 °C | 410.0 MPa | T651 | WL 3.1924-1 | Plate | Transverse | |
20.0 °C | 420.0 MPa | T651 | WL 3.1924-1 | Plate | Transverse | |
20.0 °C | 420.0 MPa | T651 | WL 3.1924-1 | Rod | ||
20.0 °C | 430.0 MPa | T651 | WL 3.1924-1 | Plate | Transverse | |
Yield strength | 20.0 °C | 335.0 - 375.0 MPa | T651 | WL 3.1924-1 | ||
20.0 °C | 340.0 MPa | T651 | WL 3.1924-1 | Plate | RP02 Transverse | |
20.0 °C | 350.0 MPa | T651 | WL 3.1924-1 | Plate | RP02 Transverse | |
20.0 °C | 350.0 MPa | T651 | WL 3.1924-1 | Rod | RP02 | |
20.0 °C | 370.0 MPa | T651 | WL 3.1924-1 | Plate | RP02 Transverse | |
20.0 °C | 375.0 MPa | T651 | WL 3.1924-1 | Plate | RP02 Transverse | |
20.0 °C | 380.0 MPa | T651 | WL 3.1924-1 | Plate | RP02 Transverse | |
20.0 °C | 390.0 MPa | T651 | WL 3.1924-1 | Plate | RP02 Transverse |
Thermal
| Property | Value | Comment |
|---|---|---|
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 | 816.0 - 963.0 J/(kg·K) | Typical for Wrought 2000 Series Aluminium |
Thermal conductivity | 112.0 - 251.0 W/(m·K) | Typical for Wrought 2000 Series Aluminium |
Electrical
| Property | Value | Comment |
|---|---|---|
Electrical conductivity | 18000000.0 - 30000000.0 S/m | Typical for Wrought 2000 Series Aluminium |
Electrical resistivity | 3.4e-08 - 6e-08 Ω·m | Typical for Wrought 2000 Series Aluminium |
Chemical properties
| Property | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|
Copper | 1.8 - 2.7 % | T651 | WL 3.1924-1 | Plate, Rod |
Iron | 0.9 - 1.4 % | T651 | WL 3.1924-1 | Plate, Rod |
Magnesium | 1.2 - 1.8 % | T651 | WL 3.1924-1 | Plate, Rod |
Manganese | 0.2 | T651 | WL 3.1924-1 | Plate, Rod |
Nickel | 0.8 - 1.4 % | T651 | WL 3.1924-1 | Plate, Rod |
Silicon | 0.15 - 0.25 % | T651 | WL 3.1924-1 | Plate, Rod |
Titanium | 0.2 | T651 | WL 3.1924-1 | Plate, Rod |
Zinc | 0.1 | T651 | WL 3.1924-1 | Plate, Rod |
Technological properties
| Property | ||
|---|---|---|
| Workability | Moderate Workability | |
Metal
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