ASTM B316 Grade 7050-O: High-Performance Heat‑Treatable Aluminum Alloy for Aerospace
ASTM 7050 is a heat treatable alloy that has very high mechanical properties and high fracture toughness. Popular with the aerospace industry, ASTM 7050 offers good stress and corrosion cracking resistance and high strength at subzero temperatures.
Properties
General
| Property | Value | Comment |
|---|---|---|
Density | 2.7 - 2.85 g/cm³ | Typical for Wrought 7000 Series Aluminium |
Mechanical
| Property | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|
Elastic modulus | 69.0 - 72.0 GPa | Typical for Wrought 7000 Series Aluminium | |||
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 | 275.0 | O | ASTM B316 | Wire, Rod |
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 | 0.04 | O | ASTM B316 | Wire, Rod |
Copper | 2.0 - 2.6 % | O | ASTM B316 | Wire, Rod |
Iron | 0.15 | O | ASTM B316 | Wire, Rod |
Magnesium | 1.9 - 2.6 % | O | ASTM B316 | Wire, Rod |
Manganese | 0.1 | O | ASTM B316 | Wire, Rod |
Silicon | 0.12 | O | ASTM B316 | Wire, Rod |
Titanium | 0.06 | O | ASTM B316 | Wire, Rod |
Zinc | 5.7 - 6.7 % | O | ASTM B316 | Wire, Rod |
Technological properties
| Property | ||
|---|---|---|
| Brazing | Excellent | |
Metal
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