Nihonweld NT-AL 5356/NM-AL 5356 description: NT-AL5 (5356) is more commonly referred to as Al Mg 5. It is a 5% magnesium aluminum filler metal that is available for TIG and MIG welding processes. The weld deposit of NT-AL 5356 offers much better corrosion resistance when exposed to salt and water. The post-anodizing color tint is white.