Applications:
Aircraft and military highly stressed structural components. Rolling stock for machine parts and tools (for rubber and plastics). Screws and bolts, nuts. Rivets. Nuclear applications.
Characteristic Properties:
Heat treatable very high strength alloy with a strength slightly lower than 7010. Very high fatigue strength. Joining preferably by rivets, adhesives or screws. Corrosion protection is recommended also in outdoor atmosphere.
Precautions and Warnings:
Care to be taken when selecting temper (and other thermal treatment) for balance of properties. May be clad with 7072 for better protection against stress corrosion cracking.
|
BS 2L95(1971) Alloy L95 |
|
|---|---|
| Chemical Element | % Present |
| Aluminium (Al) | balance |
| Other (Each) | 0.05 max |
| Tin (Sn) | 0.05 max |
| Nickel (Ni) | 0.05 max |
| Lead (Pb) | 0.05 max |
| Others (Total) | 0.15 max |
| Titanium + Zirconium (Ti+Zr) | 0.2 max |
| Chromium (Cr) | 0.1 - 0.25 |
| Manganese (Mn) | 0.3 max |
| Silicon (Si) | 0.4 max |
| Iron (Fe) | 0.5 max |
| Copper (Cu) | 1.2 - 2 |
| Magnesium (Mg) | 2.1 - 2.9 |
| Zinc (Zn) | 5.1 - 6.4 |
Aluminium alloy L95 - 7075 is covered by standard BS 2L95 (1971). BS2L95 (1971) was superseded by BS EN 2126 on 15 October 1996.
The most common temper for L95 – 7075 aluminium is:
L93 – 7075 aluminium is supplied in Plate
| Physical Property | Value |
|---|---|
| Density | 2.81 g/cm³ |
| Melting Point | 635 °C |
| Thermal Expansion | 23.5 x10^-6 /K |
| Modulus of Elasticity | 72 GPa |
| Thermal Conductivity | 134-160 W/m.K |
| Electrical Resistivity | 40 % IACS |
These Mechanical properties are for Plate in the T651 temper
| Thickness (mm) | Proof Strength (Min) | Tensile Strength (Min) | Elongation % (Min) |
| Over 6 to & incl. 12.5 | 450 | 530 | 8 |
| Over 12.5 up to & incl. 25 | 450 | 530 | 6 |
| Over 25 up to & incl. 40 | 450 | 530 | 5 |
| Over 40 up to & incl. 63 | 440 | 510 | 5 |
| Over 63 up to & incl. 90 | 410 | 500 | 5 |