ASTM B209 AA5251 5251 Alloy Aluminum Coil

Prime Quality ASTM B209  AA5251 Aluminum Coil 5251 Alloy Aluminum Coil

Alloy 5251 is a non-heat treatable rolled product supplied as either sheet or coil. 5251

is stronger than 5005 and is used in applications requiring more structural integrity or

impact resistance. 5251 has excellent corrosion resistance, medium static strength, me

-dium to high fatigue strength, good weldability and very good corrosion resistance esp

-ecially in marine applications.

Key Characteristics

• Moderate Mg content (2.0-2.5%) offering balanced strength

• Exceptional corrosion resistance - outperforms 5052 in marine environments

• Excellent weldability - suitable for MIG/TIG welding

• Anodizing-friendly with good surface treatment adaptability

• Cost-performance leader between 5052 and 5083 alloys

Mechanical Properties

Key Advantages

• Enhanced Corrosion Resistance: Performs exceptionally well in marine environments,

   outperforming standard 5052 alloy.

• Optimized Strength: Offers 15-20% higher strength than 5052 while maintaining good

   formability.

• Welding Friendly: Maintains excellent weld characteristics without requiring post-weld

   treatment

• Surface Ready: Accepts anodizing and coatings exceptionally well for aesthetic applications

• Cost Effective: Provides near-5083 performance at significantly lower cost

Industry Applications

• Marine Components

Ideal for shipbuilding applications including hull panels, decking, and marine hardware where

saltwater resistance is critical.

• Transportation Equipment

Widely used in truck bodies, rail components, and EV battery enclosures requiring durability

and weight savings.

• Architectural Features

Perfect for coastal building facades, roofing systems, and architectural trim demanding both

aesthetics and weather resistance.

• Industrial Fabrications

Commonly specified for chemical equipment, food processing machinery, and pressure vessels.

Our company advantages

Technological & Production Strengths:

♦ R&D Capabilities: Own a national-level corporate technology center and contributes to industry

standards.

♦ Production Scale: We had an annual capacity exceeding 1 million tons of aluminium large-scale 

rolling mills.

♦ Production Ability: We can produce the great Aluminum material for automobile, railway transp

-ortation, marine, aerospace etc fields, and obtained the relevant certification.

Our factory own the world advanced equipments, include: