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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

PropertyValueConditionRelated 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

PropertyValueConditionRelated StandardsComment

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

PropertyTemperatureValueConditionRelated 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

PropertyValueConditionRelated 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

PropertyValueConditionRelated 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

  1. EN 573-3 Grade 3.0915 (H111) – Premium Aluminium Alloy
  2. EN 573-3 Grade 3.3326 H111 – Detailed Mechanical Properties of 5000 Series Aluminium
  3. EN 573-3 Grade 3.0505 H111 Aluminium Alloy - Technical Specifications
  4. AW‑5186 H111 Aluminium Alloy – EN 573‑3 Certified for High‑Performance Applications
  5. EN 573-3 Grade 3.0257 H111 Aluminium Alloy Specifications
  6. EN 573-3 Grade 3.3549 H111 Aluminium Alloy – Technical Specifications and R&D Services
  7. EN 573-3 Grade 3.1325 H111 – Aluminium Alloy Properties & Standards
  8. EN 573-3 Grade 3.1355 F Aluminum Alloy – Aircraft-Grade Strength & Machinability
  9. EN 573-3 Grade 3.1355 O3 Aluminum Alloy – Aircraft‑Grade Strength & Machinability
  10. EN 573-3 Grade 3.1355 T8 Aluminum Alloy – High Strength, Excellent Machinability