Hastelloy is a nickel alloy that is extremely strong and corrosion-resistant, making it ideal for harsh chemicals and acids.... moreHastelloy is a nickel alloy that is extremely strong and corrosion-resistant, making it ideal for harsh chemicals and acids. The high temperature and corrosion resistance qualities are enhanced by including chromium and molybdenum. The malleability of Hastelloy plate suppliers allows it to take on a wide variety of shapes.