2014A - AlCuSiMg(A) Aluminium Plates & Sheets (DIN, WNR)

Product Description

Aluminium alloy 2014A (often designated as AlCu4SiMg(A)) is a high-strength, copper-based "duralumin" alloy. It is primarily used in the aerospace, defense, and high-performance structural sectors due to its exceptional strength-to-weight ratio and excellent machinability.

Technical Designations & Equivalents

The 2014A grade is a refined European version of the standard 2014 alloy, adhering to tighter impurity limits (specifically for Silicon and Iron).

Chemical Composition (Typical Weight %)

The "A" in 2014A signifies a specific control over alloying elements to enhance mechanical properties and consistency.

• Aluminium (Al): Remainder

• Copper (Cu): 3.90% “ 5.00% (Main strengthening agent)

• Silicon (Si): 0.50% “ 0.90%

• Manganese (Mn): 0.40% “ 1.20%

• Magnesium (Mg): 0.20% “ 0.80%

• Iron (Fe): 0.50% max

• Zinc (Zn): 0.25% max

Mechanical Properties (T6 / T651 Temper)

Most 2014A plates and sheets are supplied in the T6 (Solution heat-treated and artificially aged) or T651 (Stress-relieved by stretching) condition to maximize strength.

Key Characteristics & Usage

ðŸ›ï Fabrication & Processing

• Machinability: Excellent. It is one of the best aluminum alloys for high-speed machining, producing small, manageable chips.

• Weldability: Poor. Fusion welding (MIG/TIG) is generally not recommended due to the high risk of solidification cracking. Resistance welding and mechanical fastening (riveting/bolting) are preferred.

• Corrosion Resistance: Poor. Due to high copper content, it is susceptible to atmospheric corrosion. It is often "clad" with a thin layer of pure aluminum (Alclad) or requires protective coatings/anodizing.

ˆï Primary Applications

• Aerospace: Aircraft structures, skins, and frames.

• Military: Vehicles and weapons components.

• High-Load Structures: Heavy-duty bridges, truck frames, and forgings.