In order to improve the corrosion resistance and cold and hot working properties of Hastelloy alloy, hastelloy has made three major improvements:
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)
Currently the most widely used is the second generation of materials N10665 (B-2), N10276 (C-276), N06022 (C-22), N06455 (C-4) and N06985 (G-3).
2. Mechanical property:
The mechanical properties of Hastelloy alloys is very prominent, it has high strength, high toughness, so there is a certain degree of difficulty in machining, and the strain hardening tendency is very strong, when the deformation rate is up to 15%, it is about two times of 18-8 stainless steel. In addition, the sensitization tendency of Hastelloy alloy increases with the increase of deformation rate. When the temperature is higher, Hastelloy alloy is easy to absorb harmful elements to reduce its mechanical properties and corrosion resistance.
