2014A T651 is a high-strength aluminum alloy belonging to the 2000 series and is strengthened with copper (Cu) additions. The “T651” temper indicates that the alloy has undergone solution heat treatment, followed by stress-relief heat treatment to eliminate residual stresses, and is then stabilized by natural aging. This process reduces internal stresses while providing high strength, offering significant advantages in engineering applications where dimensional stability and tight tolerances are critical. The chemical composition of the alloy typically includes approximately 3.9–4.5% Cu, 0.4–1.0% Mn, 0.4–0.8% Mg, and 0.2–0.8% Si, which enhances mechanical performance through heat treatment hardening.

In terms of strength, 2014A T651 is quite high; typical tensile strength ranges between 440–470 MPa, while yield strength is in the range of 270–300 MPa. Elongation is approximately 10–12%. These properties make the alloy suitable for structural components exposed to high loads in aerospace, defense industry, heavy machinery, and automotive sectors. Additionally, 2014A T651 offers good fatigue resistance, providing reliable performance under repeated loads and vibrational conditions.

Regarding machinability, 2014A T651 provides good surface quality and controlled chip breaking, consistent with other 2000 series aluminum alloys. It is suitable for CNC milling, drilling, turning, and other machining processes. The alloy has sufficient formability and can be subjected to operations such as bending, straightening, and pressing. However, its weldability is limited, and welding may negatively affect mechanical properties. Therefore, bolted connections or mechanical fastening methods are considered more reliable.

In terms of corrosion resistance, 2014A T651 is naturally limited due to its copper content. Surface protection is required in humid or aggressive environments. Therefore, protective treatments such as anodizing, coating, or painting are commonly applied. With appropriate surface protection, 2014A T651 provides long service life and reliable performance. This alloy is especially preferred in aerospace, defense, automotive, and heavy machinery industries where high strength and durability are required.
 

STANDARDS FOR MATERIAL COMPOSITION

2014A T651 can be supplied in accordance with the following standards:
• 2014A T651 Plate; ASTM B209, ISO AlCu4SiMg, UNS A9201, BS 2 L93, WNR 3.1255
• 2014A T651 Sheet; ASTM B209, ISO AlCu4SiMg, UNS A9201, BS 2 L93, WNR 3.1255
• 2014A T651 Cold Drawn Round Bar; ASTM B211, UNS A92014, ASTM B928
• 2014A T651 Cold Drawn Flat Bar; ASTM B211, UNS A92014, ASTM B928
• 2014A T651 Cold Drawn Wire; ASTM B211, UNS A92014, ASTM B928
• 2014A T651 Cold Drawn Tube; ASTM B211, UNS A92014, ASTM B928
 

Characteristic Properties of 2014A T651: 

• Strength: Excellent
• Machinability: Very Good
• Weldability: Weak (Filler welding is the best option)
• Formability: Good
• Corrosion Resistance: Poor (Improves with coating)
• Heat Treatment: Yes
   

Some Well-Known Applications of 2014A T651: 
Heat exchangers, cooling towers,
Military vehicle manufacturing and weapon production,
Generally used in aerospace and automotive industries.
 

STOCK
We supply 2014A T651 in plate/sheet, bar/flat bar, and tube/profile forms.

• Plate / Sheet
• Sheet
• Bar / Flat Bar
• Tube / Profile