Clean Billet Aluminum Welding Wire

Specification

Applications and Solutions

• Aerospace and Space: Where military specifications (MIL-SPEC) or AMS standards mandate extremely tight control over residual elements and inclusions.

• High-Vacuum and Ultra-Clean Systems: Welding components for scientific equipment, particle accelerators, and semiconductor chambers where outgassing or purity is critical.

• Fatigue-Critical Structures: Reducing internal inclusions which act as nucleation sites for fatigue crack growth under cyclic loading.

• Nuclear and High-Pressure Vessels: Where weld integrity must be guaranteed against micro-defects under extreme service conditions.

FAQ

• Q: How does iron (Fe) impurity in the billet affect the final weld?A: Iron forms brittle intermetallic phases (FeAl3​) in the weld deposit. These phases decrease fracture toughness, reduce ductility, and can serve as initiation points for corrosion and fatigue cracks. Lower Fe content is always preferable.

• Q: How do you verify the billet is "clean"?A: Every billet is sampled and subjected to Optical Emission Spectrometry (OES) analysis to verify chemical limits. Additionally, metallographic analysis (micro-etching) is performed to check for non-metallic inclusion density and grain structure uniformity.

• Q: Does the use of clean billet reduce the need for wire cleaning?A: No. While the billet purity is superior, the wire still requires multi-stage cleaning (shaving/chemical wash) to remove process lubricants and surface oxides acquired during drawing and handling. Both steps are mandatory for the highest quality.