The 7075 T651 aluminum alloy, classified under ASTM B209-14 / ASTM B221-14 and DIN 3.4365 (AlZnMgCu1.5), stands out for its high mechanical strength and good fatigue resistance, its composition includes magnesium, chromium, zinc, copper , silicon, iron, manganese and titanium, available in rolled or extracted conditions, supplied with precipitation hardening or aging heat treatments, exhibits physical properties such as thermal conductivity and coefficient of thermal expansion, along with notable mechanical properties.
Aluminum 7075 T651 In compliance with ASTM B209-14 / ASTM B221-14 and DIN 3.4365 (AlZnMgCu1.5), it represents an outstanding choice due to its exceptional mechanical strength and ability to resist fatigue compared to other alloys, its chemical composition, which includes magnesium, chromium, zinc, copper, silicon, iron, manganese and titanium, contributes to its outstanding properties.
This alloy is supplied in rolled or extruded conditions, with heat treatment options, either precipitation hardening or aging, its physical properties encompass a thermal conductivity of 130 W/m °C and a coefficient of thermal expansion of 23.0 x 10-6 / °C (0-100°C), has a tensile strength of at least 517 N / mm2 (75,000 Lb/in2), yield strength of at least 427 N/mm2 (62,000 Lb/in2) and a hardness of 150 HB (500 Kg / 10 mm) at room temperature.
Alloy 7075 T651, known as “duralumin”, stands out for its good machinability, polishability and weldability characteristics, it is susceptible to electrolytic treatments such as anodizing, chrome plating and nickel plating, it offers superior resistance compared to other aluminum alloys, including the 5000 or 6000 series.
Regarding its applications, this alloy finds use in structural components, measuring devices, and in the aeronautical industry, where it is often called “aerospace aluminum.” In addition, in the plastic molding industry, it is used in manufacturing blow molds, thermoforming, vulcanizing and injection prototype molds, taking advantage of their high conductivity for short production cycles.
