Without getting technical on this, the simple answer is Hastelloy C-276 is a wrought material. Hastelloy is also a trademarked name for the material by Haynes International. CW12MW is an (almost) equivalent material in a cast form. Either sand or investment cast. There is a slight chemistry difference between the two, but for most industrial applications either works for corrosion resistance. Some companies call it Alloy-C.