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.
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.
|Chemical Element||% Present|
|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 BS2L95 (1971) was superseded by BS EN 2126 on 15 October 1996.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
|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|