4043 aluminum wire is a non-heat-treatable aluminum alloy from the Al–Si series (4xxx series). It is widely recognized for its excellent corrosion resistance, good wear resistance, and superior weldability. Compared with 4032 aluminum wire, 4043 has lower hardness but better flexibility and is commonly used as filler wire for aluminum welding applications.
Description
Features
- Excellent Corrosion Resistance
Performs well in atmospheric, marine, and industrial environments, suitable for outdoor and structural applications.
- Good Wear and Mechanical Properties
Provides moderate strength and wear resistance, ideal for filler and joining applications.
- Superior Weldability
Widely used as welding filler wire, ensuring strong, crack-resistant joints in aluminum structures.
- Non-Heat-Treatable Alloy
Mechanical strength is achieved through alloying and strain hardening rather than heat treatment.
- Good Formability and Ductility
Maintains excellent bending and forming performance for fabrication and joining processes.
Specifications
| Item | Description |
|---|---|
| Alloy | 4043 |
| Aluminum Content / Chemical Composition | Al: Balance, Si: 4.5–6.0%, Mg: 0.05–0.20%, Fe: ≤ 0.8%, Cu: ≤ 0.2%, Mn: ≤ 0.05%, Zn: ≤ 0.1%, Ti: ≤ 0.2%, Others: ≤ 0.15% |
| Temper | O / F (customized) |
| Diameter Range | Customized according to requirements |
| Tensile Strength | According to temper |
| Elongation | According to temper |
| Surface Finish | Bright, mill finish, or anodizing grade |
| Straightness | According to standard or customized |
| Length | Coil, spool, or cut length |
| Standards | EN, ASTM, or customized |
Applications
- Welding Filler Wire
Extensively used as filler material in TIG and MIG welding, providing strong, durable, and crack-resistant joints.
- Automotive and Transportation Components
Applied in structural and body parts where welding is required.
- Marine and Offshore Structures
Suitable for joining aluminum components in marine or outdoor applications due to excellent corrosion resistance.
- Industrial Fabrication
Used in precision-formed parts, machinery, and equipment that require welding assembly.
- Lightweight Aluminum Structures
Ideal for aluminum frameworks, housings, and structural joints requiring strong, corrosion-resistant connections.
Packaging
| Packaging Type | Weight | Dimensions |
|---|---|---|
| Plastic Reel | 7 kg/reel | Outer Diameter: 270 mmBore Diameter: 52 mmHeight: 105 mm |
| Drum (Small) | 25–100 kg/drum | Outer Diameter: 460 mm Height: 280 mm |
| Drum (Medium) | 25–100 kg/drum | Outer Diameter: 570 mm Height: 380 mm |
| Drum (Large) | 25–100 kg/drum | Outer Diameter: 570 mm Height: 740 mm |
| Bundle | 10–40 kg/bundle | Outer Diameter: 570 mm Inner Diameter: 340 mm Height: 170 mm |