... sepiolite, white clay, pyrophyllite etc siliceous nonmetallic minerals are effectively used in E4303, E4313 welding rod, while they have not so ... flake shape aluminium potassium silicate, formula is KAl2[Si3AlO10](OH,F), the chemical contents that are suitable for welding rod are: ... shell frequent cracks effectively. The mix percentage is 3% to 5% when it is used in E4303, E4313 etc acid welding rod ...