904L stainless steel pipe is a non-stabilised low carbon high alloy austenitic stainless steel pipe. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid. It is also highly resistant to chloride attack both pitting / crevice corrosion and stress corrosion cracking.
904L stainless steel pipe fittings are designed for harsh environments of the corrosion conditions. Initially stainless steel is developed for corrosion resistance in sulfuric acid. This feature has been verified that is very successful after many years of practical application. Now, 904L stainless steel pipe in many countries have been standardized.
As the high chromium, nickel, molybdenum and copper content, 904L stainless steel forged fittings has excellent corrosion resistance. Such as the uniform corrosion, especially in dilute sulfuric acid.
904L stainless steel does have very substantial contents of the high cost ingredients nickel and molybdenum. Many of the applications in which this grade has previously performed well can now be fulfilled at lower cost by duplex stainless steel. Production cost of the company has reduced with fall in nickel prices, benefits of which can be passed onto customers; Nickel prices have been volatile in last two years.
904L has greater amounts of chromium and nickel than the 316L grade. It is typically used in the chemical industry for severe corrosion environments i.e better resistance to pitting, SCC, IGC etc. In terms of matching international standards It is unsure, The only problem is with this alloy is that it would be a great deal more expensive than a 316L grade stainless steel. The falling in price of 904L stainless steel is not good for Indian economy. Dynamic forge & Fittings (I) P. Limited is one of the leading producer of 904L stainless steel flanges, discounted 20% off on 904L stainless steel products. Please check our extant price list of 904L flanges.