EN 573-3 Grade 3.1355 H111 – High-Strength Aluminum Alloy 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
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Density | 2.77 g/cm³ | H111 | EN 573-3, EN 754, EN 755 |
2.78 g/cm³ | H111 | EN 573-3, EN 754, EN 755 |
Mechanical
| Property | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|
Elastic modulus | 73.0 GPa | H111 | EN 573-3, EN 754, EN 755 | |
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 | 27.4 GPa | H111 | EN 573-3, EN 754, EN 755 | |
Tensile strength | 240.0 | H111 | EN 573-3, EN 754 | |
250.0 | H111 | EN 573-3, EN 754, EN 755 |
Thermal
| Property | Temperature | Value | Condition | Related Standards |
|---|---|---|---|---|
Coefficient of thermal expansion | -50 °C | 2.11e-05 1/K | H111 | EN 573-3, EN 754, EN 755 |
20 °C | 2.11e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
20 °C | 2.2899999999999998e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
20 °C | 2.3199999999999998e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
20 °C | 2.38e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
20 °C | 2.4699999999999997e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
100 °C | 2.2899999999999998e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
100 °C | 2.3199999999999998e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
200 °C | 2.38e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
300 °C | 2.4699999999999997e-05 1/K | H111 | EN 573-3, EN 754, EN 755 | |
Melting point | 505.0 - 640.0 °C | H111 | EN 573-3, EN 754, EN 755 | |
505.0 - 635.0 °C | H111 | EN 573-3, EN 754, EN 755 | ||
Specific heat capacity | 875.0 J/(kg·K) | H111 | EN 573-3, EN 754, EN 755 | |
Thermal conductivity | 121.0 - 193.0 W/(m·K) | H111 | EN 573-3, EN 754, EN 755 | |
130.0 - 150.0 W/(m·K) | H111 | EN 573-3, EN 754, EN 755 |
Electrical
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Electrical conductivity | 17000000.0 - 29000000.0 S/m | H111 | EN 573-3, EN 754, EN 755 |
18000000.0 - 21000000.0 S/m | H111 | EN 573-3, EN 754, EN 755 | |
Electrical resistivity | 3.45e-08 - 5.88e-08 Ω·m | H111 | EN 573-3, EN 754, EN 755 |
4.76e-08 - 5.56e-08 Ω·m | H111 | EN 573-3, EN 754, EN 755 |
Chemical properties
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Chromium | 0.1 % | H111 | EN 573-3, EN 754, EN 755 |
Copper | 3.8 - 4.9 % | H111 | EN 573-3, EN 754, EN 755 |
Iron | 0.50 % | H111 | EN 573-3, EN 754, EN 755 |
Magnesium | 1.2 - 1.8 % | H111 | EN 573-3, EN 754, EN 755 |
Manganese | 0.3 - 0.9 % | H111 | EN 573-3, EN 754, EN 755 |
Silicon | 0.5 % | H111 | EN 573-3, EN 754, EN 755 |
Titanium | 0.15 % | H111 | EN 573-3, EN 754, EN 755 |
Zinc | 0.25 % | H111 | EN 573-3, EN 754, EN 755 |
Technological properties
| Property | ||
|---|---|---|
| Anodizing | decorative: not suitable, Protective: good | |
| Brazing | hard brazing (with flux/ without flux): not suitable / not suitable, friction soldering: acceptable, soft brazing with flux: not suitable | |
| Corrosion properties | Seawater: poor, weathering: poor | |
| Workability | Bending / Spinning (cold): sufficient (O) / acceptable (O), Impact extrusion (cold): acceptable (O), Deep drawing / upsetting (Condition) acceptable (O) / sufficient (O) | |
Metal
- EN 573-3 Grade 3.0915 (H111) – Premium Aluminium Alloy
- EN 573-3 Grade 3.3326 H111 – Detailed Mechanical Properties of 5000 Series Aluminium
- EN 573-3 Grade 3.0505 H111 Aluminium Alloy - Technical Specifications
- AW‑5186 H111 Aluminium Alloy – EN 573‑3 Certified for High‑Performance Applications
- EN 573-3 Grade 3.0257 H111 Aluminium Alloy Specifications
- EN 573-3 Grade 3.3549 H111 Aluminium Alloy – Technical Specifications and R&D Services
- EN 573-3 Grade 3.1325 H111 – Aluminium Alloy Properties & Standards
- EN 573-3 Grade 3.1355 F Aluminum Alloy – Aircraft-Grade Strength & Machinability
- EN 573-3 Grade 3.1355 O3 Aluminum Alloy – Aircraft‑Grade Strength & Machinability
- EN 573-3 Grade 3.1355 T8 Aluminum Alloy – High Strength, Excellent Machinability