Hastelloy is also a super alloy with slight modifications in contents. Hastelloy pipes contain nickel-molybdenum-chromium content with the addition of tungsten. Addition of tungsten helps in providing excellent corrosion resistance in a wide range of severe environments.
The high nickel and molybdenum content makes it resistant to pitting and crevice corrosion in reducing conditions. While, the chromium in these Hastelloy pipes helps in resisting oxidizing from various mediums. Carbon content in Hastelloy pipes is low, which helps in minimizing carbide precipitation during welding. Hastelloy is also considered as one of the most versatile alloys with resistance to corrosion. Hastelloy pipes can resist a wide variety of chemical attacks effectively. It resists sea water, chloride solutions, organic and in organic corrosive mediums, formic acid, acetic acid, as well as ferric and cupric chlorides. Hastelloy pipes also have great resistance to pitting and stress corrosion cracking. Hastelloy is use in chemical processing components, reaction vessels, evaporators, paper and pulp production, sour gas wells, pharmaceutical and food processing equipment and more.