Premium Chromium Liners(Bi metal liner,Hy-chorme liner )combine the strength of a forged
steel out shell with the abrasion and corrosion resistance of a
high chromium iron inner sleeve. These liners feature a
centrifugally cast high chrome iron sleeve which is machined and
heat treated to a minimum uniform bore hardness of 62RC. Each liner
is machined to close tolerance to assure ease of installation and
long liner life with the inside diameter of these premium liners
honed to a mirror-like finish for smooth even wear during the life
superior performance under tough corrosive and abrasive conditions.
Outer Shell: 45# forged steel, tensile strength is σb ＞610MPa, yield strength is σs＞450MPa, elongation is δ＞17%, hardness is HRC180-200 Inner Sleeve: Hy-chrome forged steel
(centrifugal forged). Annealing hardness is HRC≤40. Quenching
hardness is HRC59-67.