| 摘要 |
The present invention relates to a thin hollow casting austenitic stainless steel fitting product having corrosion resistance, and a manufacturing method therefor comprising a heat treatment step of maintaining thin fittings, which are made of stainless steel and manufactured by casting, at a heat treatment temperature of 1,030-1,200°C. The thin hollow fitting product having corrosion resistance improved by suitable ferrite fraction and permeability, of the present invention, has excellent effects such as not having a post-treatment step after heat treatment, maintaining the intrinsic gloss of stainless steel by preventing the oxidation of the surface of a material since passivation is carried out after heating, and improving corrosion resistance by controlling a ferrite fraction and permeability such that the ferrite fraction and the permeability are suitable. |
