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Introduction

Hastelloy is a nickel-based corrosion-resistant alloy, mainly divided into nickel-chromium alloy and nickel-chromium-molybdenum alloy. Hastelloy has good corrosion resistance and thermal stability, and is mostly used in aviation and chemical fields.

classification

Hastelloy alloys are mainly divided into three series, B, C, and G. It is mainly used in iron-based Cr-Ni or Cr-Ni-Mo stainless steel, non-metallic materials, and other highly corrosive media that cannot be used.

Hastelloy
In order to improve the corrosion resistance and cold and hot workability of Hastelloy, Hastelloy has made 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 second-generation materials N10665 (B-2), N10276 (C-276), N06022 (C-22), N06455 (C-4) and N06985 (G-3)

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