What Is Aluminum Alloy 7075 For Die Casting?

This article aims to show all about the aluminum alloy 7075 for die casting, the properties, physical characteristics, chemical composition and uses for 7075 aluminum, and highlight its strengths as an engineering material.

What Is Aluminum Alloy 7075?

7075 aluminum alloy is a cold treated forging alloy with high strength, far superior to low carbon steel, it’s suitable for die casting. 7075 is one of the most powerful alloys on the market. 7075 aluminum alloy has compact structure and strong corrosion resistance, which is most suitable for aviation and navigation plate. General corrosion resistance, good mechanical properties and anode reaction. The finer the grain, the better the deep drilling performance and the stronger the wear resistance of the tool.


Aluminum alloy 7075 zinc is the main alloying element in 7075. Adding magnesium to the alloy containing 3% – 7.5% zinc can form mgzn2 with significant strengthening effect, which makes the heat treatment effect of the alloy much better than that of the aluminum zinc binary alloy. Increasing the content of zinc and magnesium in the alloy will further improve the tensile strength, but its ability to resist stress corrosion and exfoliation corrosion will be correspondingly reduced. After heat treatment, very high strength characteristics can be obtained. 7075 materials generally add a small amount of copper, chromium and other alloys. In this series, 7075-T651 aluminum alloy is particularly high-grade. It is known as the leader in aluminum alloy. It has high strength, far superior to any low carbon steel. This alloy also has good mechanical properties and anodic reaction. Representative applications include aerospace, mold processing, mechanical equipment, tooling and fixtures, especially for manufacturing aircraft structures and other high stress structures requiring high strength and strong corrosion resistance.


7075 aluminum plate is a cold treated forging alloy with high strength and hardness, which is far superior to low carbon steel. 7075 aluminum plate is one of the most powerful commercial alloys, with common corrosion resistance, good mechanical properties and anode reaction. Fine grain makes the deep drilling performance better, the tool wear resistance is enhanced, and the thread rolling is more characteristic. It is the first choice for metal materials with low density and high hardness requirements.


7 series aluminum alloy belongs to Al Zn mg Cu Series superhard aluminum. This alloy is an ultra-high strength deformed aluminum alloy, which has been used in the aircraft industry in the late 1940s and is still widely used in the aviation industry. It is characterized by good plasticity after solution treatment, especially good heat treatment strengthening effect, high strength below 150 ℃, and especially good low temperature strength; Poor welding performance; Stress corrosion cracking tendency; Aluminum coating or other protective treatment is required. Two-stage aging can improve the stress corrosion cracking resistance of the alloy. The plasticity in the annealed and quenched state is slightly lower than that of 2A12 in the same state and slightly better than that of 7A04. The static fatigue and notch sensitivity of the plate are better than 7A04. And the density was 2.85 g / cm3.


Physical Characteristics Of Aluminum Alloy 7075

Tensile strength: 524mpa 0.2% yield strength: 455mpa elastic modulus E: 71gpa hardness: 150HB density: 2.81g/cm ^ 3

Chemical Composition Of Aluminum Alloy 7075

– Silicon Si: 0.40 

– Iron: 0.50 

– Copper Cu: 1.2-2.0 

– Manganese: 0.30 

– Magnesium: 2.1-2.9

– Chromium Cr: 0.18-0.28 

– Zinc: 5.1-6.1 

– Titanium: 0.20 


Features Of Aluminum Alloy 7075

High strength heat treatable alloy. Good mechanical properties. Good availability. Easy to process and good wear resistance. T7351 is a high-strength material used for high-pressure structural parts with enhanced corrosion resistance and fracture resistance.


7075 materials generally add a small amount of copper, chromium and other alloys. In this series, A7075 aluminum alloy is particularly high-grade. It is known as the leader in aluminum alloy. It has high strength, far superior to any low carbon steel. This alloy also has good mechanical properties and anodic reaction.


Representative applications include aerospace, mold processing, mechanical equipment, tooling and fixtures, especially for manufacturing aircraft structures and other high stress structures requiring high strength and strong corrosion resistance.


Aluminum Alloy 7075 Mechanical Behavior

Combined element attributes are expressed as the highest percentage, unless a range or minimum value is listed. In order to determine the appropriate numerical limits, the observed or calculated values obtained from the analysis are expressed in a clear range according to the standard rules (ANSI z25.1). Except for the alloy, the specified content of elements in the alloy is usually indicated in the analysis report. However, if other elements or some elements are suspected to exceed the standard during analysis, further analysis is required until confirmation. The content of aluminum in unrefined non alloy aluminum is the difference between the total amount of other metals and 100% pure aluminum — the difference is 0.01% or more. It can contain up to 0.25% zirconium and titanium.


Zinc is the main alloying element in 7075. Adding magnesium to the alloy containing 3% – 7.5% zinc can form mgzn2 with significant strengthening effect, which makes the heat treatment effect of the alloy much better than that of the aluminum zinc binary alloy. Increasing the content of zinc and magnesium in the alloy will further improve the tensile strength, but its ability to resist stress corrosion and exfoliation corrosion will be correspondingly reduced. After heat treatment, very high strength characteristics can be obtained.


7075 materials generally add a small amount of copper, chromium and other alloys. In this series, 7075-T651 aluminum alloy is particularly high-grade. It is known as the leader in aluminum alloy. It has high strength, far superior to any low carbon steel. This alloy also has good mechanical properties and anodic reaction. Representative applications include aerospace, mold processing, mechanical equipment, tooling and fixtures, especially for manufacturing aircraft structures and other high stress structures requiring high strength and strong corrosion resistance.


Aluminum Alloy Calculation Formula

Sheet weight (kg) = length * width * thickness * density (0.0000028) unit (mm) aluminum pipe weight (kg) = 0.0000028 × 3.14 × 0.25x (outer diameter ^ 2 – inner diameter ^ 2) × Length unit (mm): weight calculation formula of aluminum rod (kg) = 0.0000028 × 3.14 × radius × radius × Length unit (mm)