Tube-Alloy® Build Up-O is a self-shielded, flux-cored wire that deposits a low alloy steel. It is designed for build-up carbon and low alloy steels only. The weld metals have good compressive strength and impactresistance, making them excellent bases for more abrasion-resistant alloys. The deposits have excellent resistance to cracking, even in multiple layers, and are well within the machinable range. Tube-Alloy® Build Up-O is not recommended for joining. Conforms to AWS A5.21, classification ERCFe-1A. Tube-Alloy® Build Up-O has a steady arc with a globular transfer. It can operate successfully over a wide range of parameters. Spatter and noise levels are minimal, with a complete, easily removed slag cover even at high temperatures. Out-of-position welding is limited to a horizontal shelf technique. Applications: Bucket Teeth and Lips, Crane Wheels, Dragline Buckets, Spindles, Steel Shafts etc.