Hastelloy plates are suitable for use in a variety of chemical industries containing oxidizing and reducing media. The higher molybdenum and chromium contents make the alloy resistant to chloride ion corrosion, and the tungsten element further improves the corrosion resistance. At the same time, C-276 Hastelloy tube is one of only a few materials resistant to moisture chlorine, hypochlorite and chlorine dioxide solution. It has high concentration of chloride solution such as ferric chloride and copper chloride. Significant corrosion resistance.

Application areas

heat exchangers, bellows compensators, chemical equipment, flue gas desulfurization and denitrification, paper industry, aerospace applications, acidic environments.

Classification

Hastelloyalloy is mainly divided into three series of B, C and G. It is mainly used in the case of iron-based Cr-Ni or Cr-Ni-Mo stainless steel, non-metallic materials and other strong corrosive media.

Hastelloy grade

In order to improve the corrosion resistance and cold and hot processing properties of Hastelloy, Hastelloy has undergone three major improvements, and its development process is as follows:

B series: B→B-2(00Ni70Mo28)→B-3

C series: C→C-276(00Cr16Mo16W4)→C-4(00Cr16Mo16)→C-22(00Cr22Mo13W3)→C-2000(00Cr20Mo16)

G series: G→G-3(00Cr22Ni48Mo7Cu)→G-30(00Cr30Ni48Mo7Cu)

The most widely used are the second generation materials N10665 (B-2), N10276 (C-276), N06022 (C-22), N06455 (C-4) and N06985 (G-3).

Hastelloy C276 chemical composition %wt

Hastelloy C276 tensile test at room temperature (20 ° C)