7049 T7351 aluminum alloy belongs to the Al-Zn-Mg-Cu based 7000 series and is developed for applications requiring very high strength along with improved resistance to stress corrosion cracking (SCC). 7049 is often used as an alternative to 7075 and is particularly optimized for thick-section components. The T7351 temper includes solution heat treatment, stress relieving, and overaging, providing a balanced combination of strength and corrosion resistance.

In terms of corrosion resistance, 7049 T7351 offers high SCC resistance within the 7000 series and benefits from T7 temper characteristics. It provides significantly better stress corrosion resistance compared to 7075-T6 and shows similar SCC performance to alloys such as 7050 and 7040. Although its general corrosion resistance is lower than 6000 series alloys, it performs more reliably in aggressive environments.

Regarding strength and mechanical properties, 7049 T7351 provides very high strength, reaching levels close to or even exceeding 7075 in some cases. Although there is a slight reduction in strength compared to T6 tempers, toughness, crack propagation resistance, and damage tolerance are significantly improved. Compared to alloys such as 2024 and 6082, it offers substantially higher strength.

In terms of machinability, bendability, and weldability, 7049 T7351 offers good machinability and is suitable for machining operations. However, its weldability is limited and it is generally not used in welded structures. Its bending capability is low, and forming operations are typically carried out before heat treatment. The alloy is commonly used in forged or precision-machined components.

Regarding coating ability, vibration behavior, and applications, 7049 alloy is suitable for anodizing and protective coatings. Its decorative surface quality is limited, but performance can be improved with functional coatings. Its vibration damping capacity is low. Main application areas include aerospace industry, defense sector, high load-bearing structural parts, and thick-section components. 7049 T7351 is an ideal alloy for applications where high strength and SCC resistance are both critical.

MATERIAL COMPOSITION STANDARDS

7049 T7351 is available according to the following standards:
• 7049 T7351 Plate; AMS 4200, ASTM B209, ISO AlZn8MgCu, AFNOR A-Z8GU, UNS A97049
 

Characteristic Properties of 7049 T7351: 

• Strength: High
• Machinability: Excellent
• Weldability: Poor
• Formability: Moderate
• Corrosion Resistance: Very Good
• Heat Treatable: Yes
   

Some Well-Known Applications of 7049 T7351: 
In structural forged components,
As structural components in military fuselages,
Also widely used in the aerospace industry.
 

STOCK
7049 T7351 is supplied in plate form.

• Plate