ESAB OK AlSi12
The ESAB OK AlSi12 is a high-performance aluminum stick electrode, ideal for welding aluminum castings of AlSi, AlSiMg, and AlSiCu types. This electrode contains approximately 12% silicon, enhancing fluidity and minimizing cracking. It’s suitable for both welding and repair work, delivering excellent results on aluminum components. Featuring an airtight tin can packaging, this electrode remains moisture-free for reliable performance straight from the package. The AlSi12 alloy is equivalent to ER 4047, making it a trusted choice for applications requiring high-quality aluminum-silicon welds.
The electrode operates with DC+ current, ensuring flexibility and consistency across various welding setups. Its chloride and fluoride salt coating enhances the stability of the arc, in addition to providing smooth welds. OK AlSi12 is also suitable for gas welding applications, expanding its versatility in aluminum fabrication and repair tasks. It can also be used as a brazing alloy with the appropriate flux.
Key Features of ESAB OK AlSi12
- Moisture-Proof Packaging: Delivered in airtight tin cans to maintain electrode quality, preventing moisture-related issues during welding.
- AlSi12 Alloy: Features 12% silicon, reducing hot cracking and ensuring smooth, defect-free welds.
- Equivalent to ER 4047: Matches the characteristics of ER 4047 aluminum filler materials, widely used in aluminum welding.
- Excellent Arc Stability: Coating with chloride and fluoride salts ensures smooth arc control, providing cleaner welds and reduced spatter.
- Versatile Application: Suitable for welding aluminum castings and used as a filler for gas welding, broadening its use cases.
Key Industry Applications
- Automotive Repairs: Ideal for welding aluminum engine blocks, cylinder heads, and transmission cases, ensuring strong, crack-resistant welds for critical automotive components.
- Aerospace Fabrication: Used for welding and repairing aluminum airframe components that demand lightweight, high-strength joints, ensuring structural integrity in flight-critical parts.
- Marine Industry: Provides corrosion-resistant, high-strength welds for aluminum boat parts and marine equipment, ensuring durability in saltwater environments.
- Foundry Repairs: Perfect for repairing aluminum castings, including molds and dies. It offers excellent weld quality and fluidity for smooth surface finishes.
- Industrial Equipment: Suitable for fabricating and repairing aluminum parts in industrial machinery. It ensures high performance and long-term durability under demanding conditions.
The ESAB OK AlSi12 is used in the production of pistons for internal combustion engines. It is great for joining metal pieces in techniques such as extrusion and casting because of its qualities for welding and brazing. In addition to its widespread application in the domains of aviation, aerospace, racing, and automobile manufacturing, the ESAB OK AlSi12 is also great for applications involving thin walls, such as the production of heat exchangers.
Specifications
| Feature | Details |
|---|---|
| Alloy Type | AlSi12 (equivalent to ER 4047) |
| Typical Composition | 12.4% Si, 87.4% Al, 0.2% Fe |
| Classification | EN ISO 18273: AlSi12 |
| Coating Type | Chloride and Fluoride Salt |
| Current Type | DC+ |
| Diameter Options | 2.4 mm and 3.2 mm |
The ESAB OK AlSi12 is the go-to electrode for aluminum welding in demanding industries like automotive, aerospace, and marine, offering unmatched performance and reliability in aluminum castings and repairs.
Reference: Aluminum Alloy AlSi12
