7150-T6151 aluminum alloy is a high-strength alloy from the 7xxx series, specifically developed for aerospace applications. Its main alloying elements are zinc (Zn), magnesium (Mg), and copper (Cu). The T6151 temper represents a combination of solution heat treatment, stress relief, and artificial aging, providing both high strength and improved toughness.

In terms of corrosion resistance, 7150 offers improved performance compared to conventional 7075-T6. It shows better resistance to stress corrosion cracking (SCC). While 5xxx series alloys such as 5083 provide superior corrosion resistance in marine environments, 7050 and 7150 alloys offer an optimized balance between strength and corrosion resistance for aerospace use. Surface treatments like anodizing are commonly applied.

Regarding strength and machinability, 7150-T6151 provides very high yield and tensile strength, comparable to or even exceeding 7075-T6 in some cases. Compared to 2024, it offers higher strength and better performance in thick sections. Machinability is generally good, although tool wear can be higher due to its strength.

In terms of bending and weldability, 7150-T6151 has limited formability due to its high strength. Its bending capability is lower compared to O or T4 tempers. Weldability is generally poor, and in this regard, 6061 is much more favorable. It can be anodized, but surface uniformity may vary due to copper content.

Regarding vibration response and applications, 7150 is widely used in aerospace structures such as fuselage panels, wing structures, and thick-section components due to its high specific strength and good fatigue resistance. It was developed as an alternative to 7050 and 7075, offering better damage tolerance and improved thick-section performance. While 6061 is used in general engineering and 2024 in thin aircraft structures, 7150 stands out in critical aerospace structural applications.

MATERIAL COMPOSITION STANDARDS

7150 T6151 can be supplied in accordance with the following standards.
• 7150 T6151 Sheet/Plate; AMS 4306, UNS A97150, ISO AlZn6CuMgZr, ASTM B209

Characteristic Properties of 7150 T6151: 

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

Some Well-Known Applications of 7150 T6151: 
Upper structures of aircraft wings,
Flanges of fuselage plate girders,
Landing gear components.
 

STOCK
We manufacture and supply 7150 T6151 in sheet form.

• Sheet / Plate