2018 AA T61 Aluminium Grade – Technical Specifications & Mechanical Properties
Properties
General
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Density | 2.82 g/cm³ | T61 | AA Standards, ASTM B247 |
Mechanical
| Property | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|
Bending Fatigue Strength | 115.0 MPa | T61 | AA Standards | |
Elastic modulus | 74.0 GPa | T61 | AA Standards, ASTM B247 | |
Hardness, Brinell | 120.0 [-] | T61 | AA Standards | |
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 | 26.0 - 27.5 GPa | Typical for Wrought 2000 Series Aluminium | ||
Tensile strength | 380.0 MPa | T61 | AA Standards, ASTM B247 | |
420.0 MPa | T61 | AA Standards |
Thermal
| Property | Temperature | Value | Condition | Related Standards | Comment |
|---|---|---|---|---|---|
Coefficient of thermal expansion | 20 °C | 2.23e-05 1/K | T61 | AA Standards, ASTM B247 | |
100 °C | 2.23e-05 1/K | T61 | AA Standards, ASTM B247 | ||
Melting point | 505.0 - 640.0 °C | T61 | AA Standards, ASTM B247 | ||
Specific heat capacity | 816.0 - 963.0 J/(kg·K) | Typical for Wrought 2000 Series Aluminium | |||
Thermal conductivity | 155 W/(m·K) | T61 | AA Standards, ASTM B247 |
Electrical
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Electrical conductivity | 23000000.0 S/m | T61 | AA Standards, ASTM B247 |
Electrical resistivity | 4.35e-08 Ω·m | T61 | AA Standards, ASTM B247 |
Chemical properties
| Property | Value | Condition | Related Standards |
|---|---|---|---|
Chromium | 0.1 % | T61 | AA Standards, ASTM B247 |
Copper | 3.5 - 4.5 % | T61 | AA Standards, ASTM B247 |
Iron | 1.00 % | T61 | AA Standards, ASTM B247 |
Magnesium | 0.45 - 0.9 % | T61 | AA Standards, ASTM B247 |
Manganese | 0.2 % | T61 | AA Standards, ASTM B247 |
Nickel | 1.7 - 2.3 % | T61 | AA Standards, ASTM B247 |
Silicon | 0.9 % | T61 | AA Standards, ASTM B247 |
Zinc | 0.25 % | T61 | AA Standards, ASTM B247 |
Technological properties
| Property | ||
|---|---|---|
| Brazing | general: no brazing is known or developed | |
| General machinability | General: good to acceptable | |
| Workability | Moderate Workability | |
Metal
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