Order high quality fepa graded boron carbide powders online here! pricing is per lb, with a 5 lb minimum order. boron caribde sandblasting abrasive grits and polishing powders are fepa classified, single classification. double classification is available, but this is a special process where we grade material per additional specifications. From our start in 2002, we have grown & established a reputation for supplying quality carbide sandblasting nozzles at competitive prices. the everblast brand is internationally recognized as one that represents quality, performance and added value. we offer a wide selection of sintered carbide, sandblasting nozzles and cabinet blast gun inserts. Due to its exceptionally high abrasion resistance, boron carbide boasts an unbeatable price/performance ratio. when costs per time unit of blasting are compared, 3m boron carbide blasting nozzles may offer a more cost-effective alternative to nozzles made of silicon carbide or hard metal. 3mu2122 boron carbide blasting nozzles typical ... Apr 12, 2018u00a0u00b7 because of the rising cost and because the lower cost boron carbide is probably sufficient in durability for most folks, i decided to work with a manufacturer to produce our own boron carbides. how long do boron carbides last? before the roctec came to the market, these type of boron carbide nozzles were probably the longest lasting.