ASTM A105 FLANGES

A105 Flanges are used for ambient and high temperature services and by nature have hardness level and nickel content within the limit of NACE. ASTM A105 has no grade.Sometimes A105N is described. N stands not for Grade, but for normalized. Normalizing is a type of heat treatment, applicable to ferrous metals only. The purpose of normalizing is to remove the internal stresses induced by heat treating, casting, forming etc. A105 / A105N flanges are used in low and middle pressure fluid pipe line, boiler, petroleum and natural gas industry, electric industry , shipbuilding, fertilizer equipment, etc,.