7075 T6 Aluminum: Properties, Characteristics & Uses (2024)

FAQs

7075 T6 Aluminum: Properties, Characteristics & Uses? ›

7075-T6. T6 temper 7075 has an ultimate tensile strength of 510–540 MPa (74,000–78,000 psi) and yield strength of at least 430–480 MPa (63,000–69,000 psi). It has a failure elongation of 5–11%.

7075-T6. T6 temper 7075 has an ultimate tensile strength of 510–540 MPa (74,000–78,000 psi) and yield strength of at least 430–480 MPa (63,000–69,000 psi). It has a failure elongation of 5–11%.

In sum, 7075 Aluminum, with its unique composition, exhibits exceptional mechanical and physical properties. Despite certain drawbacks, such as susceptibility to stress corrosion cracking, it remains a preferred material due to its high strength, light weight, and corrosion resistance.

In the "T6 condition" (both metals heat-treated with a solution and aged), aluminium 7075 T6 has a tensile strength nearly double that of 6061 T6 aluminium. 7075 alloy also has a higher shear strength which is about 1.5 times that of 6061 alloys in the same T6 condition.

7075 wrought aluminum grades have a maximum tensile strength of greater than 572 MPa with a density of 2.8 g/cm3. 304-grade stainless steel, on the other hand, has a tensile strength of 621 MPa and a density of 8 g/cm3. So 7075 aluminum has 90 % of the strength of 304 stainless steel and ~ 1/3 of the weight.

Here, the T6 temper means that the alloy is solution treated at high temperatures and then artificially aged at a certain temperature (for example, 420–480K) to yield the precipitation hardening of alloys. In contrast to the O temper alloys shown in Fig.

The hardness of 7075 T6 aluminum is higher than that of 2024 T3 aluminum (150-200 HB vs. 120-150 HB). Compared with 7075 aluminum alloy, 2024 aluminum alloy has lower strength and toughness, but has better workability and weldability.

Aluminum alloys of 2024 and 7075 can become susceptible to stress corrosion cracking after welding. This phenomenon is particularly dangerous because it is not detectable immediately after welding. The cracking usually develops later when the component is in service.

The 7075-T6 alloy corresponding to an Al-Zn T6, is mostly used as structural component in the aviation industry, due to the good relationship between weight and mechanical properties. However, the negative point of this alloys is the resistance to corrosion, which is why they need to be coated with an anodic film.

Bending 7075 Aluminium has the potential to be tricky. A member of the 7000 series, it is one of the strongest alloys available and is comparable to many types of steel. The temper also plays a huge role in how difficult it is to achieve the desired bend of your curved aluminium profile extrusion.

Is 7075 more brittle than 6061? ›

First off is that the tensile strength of 7075-T6 is nearly double that of 6061-T6. The shear strength of 7075-T6 is roughly 1.5 times that of 6061-T6. The former is substantially harder as well.

What is the strongest aluminum alloy? 7068 aluminium alloy is one of the strongest commercially available aluminium alloys, with a tensile strength comparable to that of some steels. This material, also known as an aircraft alloy, is heat treatable.

Coming in at a higher cost (25% on average), 7075 aluminum alloy will give you a higher strength with slightly poorer machinability. The most notable negative when using 7075 is its much lower corrosion resistance than 6061.

Some of the frequent alloying elements for aluminum include silicon, magnesium, manganese, zinc, molybdenum and copper. Among the strongest of these alloys are the aluminum-zinc grades.

Grade 7000

Known as the zinc grades – zinc being the largest alloying element, the 7000 series grades are the hardest and strongest commercial grades of aluminium. Grade 7075 is the most common of the 7000 series grades. It is an extremely high strength alloy; the strongest of all commercial grades of aluminium.

Compared to grade 2 titanium, 7075-T6 aluminum is 33% lighter and has a higher tensile strength, strength-to-weight, and stiffness-to-weight. Aluminum can also be anodized - effectively growing an ultra hard, ultra durable skin on the outside of the metal.

The 7075-T6 aluminium is the preferred choice for the aerospace, marine, and transportation industries, where low weight and high stress resistance are crucial factors.

7 Major Differences Between 7050 Aluminum VS 7075 Aluminum

Compared to 7050 aluminum, 7075 aluminum has higher hardness and strength but performs relatively poorly in terms of machinability and corrosion resistance. 7075 is susceptible to stress corrosion and its toughness decreases with decreasing temperature.

Titanium (Grade 5 Ti 6Al-4V)

6061 does better in welding applications, it's easier to machine, and costs less. The bottom line when machining aluminum: If low weight, high tolerance to heat, and high strength are key, 7075 is the way to go.