WL 3.4334-1 Grade 3.4334 T7452 – High-Performance Forged Aviation Alloy
Material 3.4334 acc.to material specification of German Aviation WL 3.4334, part 1, edition 03.90, WL 3.4334, part 2, edition. 03.90 and WL 3.4334, part 100, edition. 03.90 is in its chemical composition similar to the materials 3.4364 (aviation mat.) and 3.4365 (AlZnMgCu1,5) acc. to DIN 1725/01, edition 02.83. It is used in the form of forged parts in heat-treatment conditions T74 and T7452. In comparison to forged parts of 3.4364 (AlZnMgCu1,5) forged parts of 3.4334T74bzw T7452 have a higher strength and comparable or higher vibration resistance and fracture toughness at concomitant favorable corrosion and stress corrosion resistance. The material is unusable for fusion-welding. Resistance welding is possible. Alloy 3.4334 is used in aircraft construction for fittings and landing gears.
Properties
General
| Property | Value | Comment |
|---|---|---|
Density | 2.7 - 2.85 g/cm³ | Typical for Wrought 7000 Series Aluminium |
Mechanical
| Property | Temperature | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|---|
Elastic modulus | 69.0 - 72.0 GPa | Typical for Wrought 7000 Series Aluminium | ||||
Elongation | 20.0 °C | 4.0 % | T7452 | WL 3.4334-1 | Forging | Transverse |
20.0 °C | 5.0 % | T7452 | WL 3.4334-1 | Forging | Transverse | |
20.0 °C | 8.0 % | T7452 | WL 3.4334-1 | Forging | ||
20.0 °C | 9.0 % | T7452 | WL 3.4334-1 | Forging | ||
Hardness, Brinell | 20.0 °C | 140.0 [-] | T7452 | WL 3.4334-1 | Forging | Transverse |
20.0 °C | 140.0 [-] | T7452 | WL 3.4334-1 | 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 | 26.4 - 27.1 GPa | Typical for Wrought 7000 Series Aluminium | ||||
Tensile strength | 20.0 °C | 415.0 MPa | T7452 | WL 3.4334-1 | Forging | Transverse |
20.0 °C | 420.0 MPa | T7452 | WL 3.4334-1 | Forging | Transverse | |
20.0 °C | 435.0 MPa | T7452 | WL 3.4334-1 | Forging | Transverse | |
20.0 °C | 435.0 MPa | T7452 | WL 3.4334-1 | Forging | ||
20.0 °C | 440.0 MPa | T7452 | WL 3.4334-1 | Forging | Transverse | |
20.0 °C | 450.0 MPa | T7452 | WL 3.4334-1 | Forging | Transverse | |
20.0 °C | 450.0 MPa | T7452 | WL 3.4334-1 | Forging | ||
20.0 °C | 460.0 MPa | T7452 | WL 3.4334-1 | Forging | Transverse | |
20.0 °C | 470.0 MPa | T7452 | WL 3.4334-1 | Forging | ||
20.0 °C | 475.0 MPa | T7452 | WL 3.4334-1 | Forging | Transverse | |
20.0 °C | 490.0 MPa | T7452 | WL 3.4334-1 | Forging |
Thermal
| Property | Value | Comment |
|---|---|---|
Coefficient of thermal expansion | 2.1e-05 - 2.4e-05 1/K | Typical for Wrought 7000 Series Aluminium |
Melting point | 465.0 - 655.0 °C | Typical for Wrought 7000 Series Aluminium |
Specific heat capacity | 795.0 - 1050.0 J/(kg·K) | Typical for Wrought 7000 Series Aluminium |
Thermal conductivity | 121.0 - 170.0 W/(m·K) | Typical for Wrought 7000 Series Aluminium |
Electrical
| Property | Value | Comment |
|---|---|---|
Electrical conductivity | 18000000.0 - 34000000.0 S/m | Typical for Wrought 7000 Series Aluminium |
Electrical resistivity | 2.9e-08 - 5.6e-08 Ω·m | Typical for Wrought 7000 Series Aluminium |
Chemical properties
| Property | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|
Chromium | 0.18 - 0.28 % | T7452 | WL 3.4334-1 | Forging |
Copper | 1.2 - 2.0 % | T7452 | WL 3.4334-1 | Forging |
Iron | 0.2 | T7452 | WL 3.4334-1 | Forging |
Magnesium | 2.1 - 2.9 % | T7452 | WL 3.4334-1 | Forging |
Manganese | 0.1 | T7452 | WL 3.4334-1 | Forging |
Silicon | 0.15 | T7452 | WL 3.4334-1 | Forging |
Titanium | 0.1 | T7452 | WL 3.4334-1 | Forging |
Zinc | 5.1 - 6.1 % | T7452 | WL 3.4334-1 | Forging |
Technological properties
| Property | ||
|---|---|---|
| Brazing | Excellent | |
Metal
- ASTM A514 Grade F Low-Carbon Steel – Key Properties & Applications
- EN 10305-5 Grade St 33 Welded Precision Steel Tubes
- BS 3100 Grade A1 Steel Specifications & Properties
- WL 3.2364 T5: Superior Weldable Cast Alloy for High-Integrity Applications
- AA 7175 T7452 Aluminium Alloy – Standard and Key Properties
- WL 3.4394 T7452 High‑Strength Steel – Superior Fracture Toughness & Corrosion Resistance
- AA 7050 T7452 – High‑Strength, Heat‑Treatable Aluminium Alloy for Aerospace
- DIN 3.4144 T7452: High-Strength, Corrosion-Resistant Aerospace Alloy
- WL 3.4334-1: German Aviation Grade 3.4334 (T74) – Premium Forged Aluminum Alloy
- WL 3.4354-1 (Grade 3.4354) – T7452: High‑Strength, Corrosion‑Resistant Al‑Zn‑Mg Alloy