vThe early high-purity HuaNickel Cr30Mo2 is a super ferritic stainless steel with C+N≤150ppm produced by double vacuum smelting process.

HuaNickel MONIT (Ti,Nb) enterprise brand name is HuaNickel MONIT, referred to as 25-4-4, is a kind of high chromium, molybdenum super ferritic stainless steel containing stabilized elements. The steel was developed in 1974 by Nyby in Sweden. Nickel is added to reduce the brittle transition temperature of the steel; Due to the high C+N content (≤0.04%) in the initial stage, the steel has a high tendency to intergranular corrosion, and the presence of stabilizing elements is to prevent intergranular corrosion during use after welding or high temperature cooling. Due to the high chromium and molybdenum content of this steel, the local corrosion resistance caused by chloride is excellent, the strength of this steel is high, and it has acceptable plasticity, toughness and welding properties under thin cross-sectional size conditions (such as ≤3~5mm), and can replace high-nickel austenitic stainless steel and high-nickel corrosion-resistant alloy under some medium conditions.