EN 573-3 Grade 3.1355 T351 Aluminum Alloy – High Strength & Machinability
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 | T351 | EN 573-3, EN 485, EN 754 |
2.78 g/cm³ | T351 | EN 573-3, EN 485, EN 754 |
Mechanical
| Property | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|
Bending angle 180° | 4.0 °/t | T351 | EN 573-3, EN 485 | |
5.0 °/t | T351 | EN 573-3, EN 485 | ||
Bending angle 90° | 4.0 °/t | T351 | EN 573-3, EN 485 | |
5.0 °/t | T351 | EN 573-3, EN 485 | ||
8.0 °/t | T351 | EN 573-3, EN 485 | ||
Elastic modulus | 73.0 GPa | T351 | EN 573-3, EN 485, EN 754 | |
Hardness, Brinell | 104.0 [-] | T351 | EN 573-3, EN 485 | |
110.0 [-] | T351 | EN 573-3, EN 485 | ||
115.0 [-] | T351 | EN 573-3, EN 485 | ||
120.0 [-] | T351 | EN 573-3, EN 485 | ||
122.0 [-] | T351 | EN 573-3, EN 485 | ||
123.0 [-] | T351 | EN 573-3, EN 485 | ||
124.0 [-] | T351 | EN 573-3, EN 485 | ||
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 | T351 | EN 573-3, EN 485, EN 754 | |
Tensile strength | 360.0 MPa | T351 | EN 573-3, EN 485 | |
380.0 MPa | T351 | EN 573-3, EN 485 | ||
400.0 MPa | T351 | EN 573-3, EN 485 | ||
420.0 MPa | T351 | EN 573-3, EN 485 | ||
425.0 MPa | T351 | EN 573-3, EN 754 | ||
430.0 MPa | T351 | EN 573-3, EN 485 | ||
435.0 MPa | T351 | EN 573-3, EN 485 | ||
440.0 MPa | T351 | EN 573-3, EN 485 |
Thermal
| Property | Temperature | Value | Condition | Related Standards |
|---|---|---|---|---|
Coefficient of thermal expansion | -50 °C | 2.11e-05 1/K | T351 | EN 573-3, EN 485, EN 754 |
20 °C | 2.11e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
20 °C | 2.2899999999999998e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
20 °C | 2.3199999999999998e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
20 °C | 2.38e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
20 °C | 2.4699999999999997e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
100 °C | 2.2899999999999998e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
100 °C | 2.3199999999999998e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
200 °C | 2.38e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
300 °C | 2.4699999999999997e-05 1/K | T351 | EN 573-3, EN 485, EN 754 | |
Melting point | 505.0 - 640.0 °C | T351 | EN 573-3, EN 485, EN 754 | |
505.0 - 635.0 °C | T351 | EN 573-3, EN 485, EN 754 | ||
Specific heat capacity | 875.0 J/(kg·K) | T351 | EN 573-3, EN 485, EN 754 | |
Thermal conductivity | 121.0 - 193.0 W/(m·K) | T351 | EN 573-3, EN 485, EN 754 | |
130.0 - 150.0 W/(m·K) | T351 | EN 573-3, EN 485, EN 754 |
Electrical
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Electrical conductivity | 17000000.0 - 29000000.0 S/m | T351 | EN 573-3, EN 485, EN 754 |
18000000.0 - 21000000.0 S/m | T351 | EN 573-3, EN 485, EN 754 | |
Electrical resistivity | 3.45e-08 - 5.88e-08 Ω·m | T351 | EN 573-3, EN 485, EN 754 |
4.76e-08 - 5.56e-08 Ω·m | T351 | EN 573-3, EN 485, EN 754 |
Chemical properties
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Chromium | 0.1 % | T351 | EN 573-3, EN 485, EN 754 |
Copper | 3.8 - 4.9 % | T351 | EN 573-3, EN 485, EN 754 |
Iron | 0.50 % | T351 | EN 573-3, EN 485, EN 754 |
Magnesium | 1.2 - 1.8 % | T351 | EN 573-3, EN 485, EN 754 |
Manganese | 0.3 - 0.9 % | T351 | EN 573-3, EN 485, EN 754 |
Silicon | 0.5 % | T351 | EN 573-3, EN 485, EN 754 |
Titanium | 0.15 % | T351 | EN 573-3, EN 485, EN 754 |
Zinc | 0.25 % | T351 | EN 573-3, EN 485, EN 754 |
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 3.1325 T351: Key Specifications for Wrought 2000 Series Aluminium
- EN 573-3 Grade 3.1645 T351 – Comprehensive Material Properties
- EN 573-3 Grade 3.1355 F Aluminum Alloy – Aircraft-Grade Strength & Machinability
- EN 573-3 Grade 3.1355 H18 – High‑Strength Aluminum Alloy for Aerospace Applications
- EN 573-3 Grade 3.1355 O3 Aluminum Alloy – Aircraft‑Grade Strength & Machinability
- EN 573-3 Grade AW-2030 T351 Aluminum Alloy – Properties & Applications
- EN 573-3 Grade 3.1355 H13 Aluminum – High Strength, Formability & Machinability
- EN 573-3 Grade 3.1255 T351 – High-Strength Aluminum Alloy
- EN 573-3 Grade 3.1355 H111 – High-Strength Aluminum Alloy for Aerospace Applications
- EN 573-3 Grade 3.1355 T8 Aluminum Alloy – High Strength, Excellent Machinability