24 July 2021 Duplex Stainless Steel
00Cr22Ni5Mo3N Duplex Stainless Steel Bar
Following the development of 3RE60 duplex stainless steel in Sweden, SAF2205 steel was first developed for the oil and gas industry pipeline material, incorporating ASTM A789, A790, A240, A276 and other standards, the United States grade UNS S31803; after the 1980s, all countries successively Develop similar steel grades and incorporate them into the standard. Germany has W-Nr.1.4462, DIN X2Gr-NiMoN2253, France has Z2CND-22-05-03, Sweden has SS2377, Britain has BS318S13 and so on. SAF2205 steel has been used for oil and gas pipelines since the late 1970s. It is the first duplex stainless steel used in this field. UNS S32205 is also derived from UNS S31803 steel in recent years to improve the phase balance and avoid the precipitation of harmful phases. The latter has In the narrower interval, ASTM has specifically established a test for the detrimental intermetallic phase of metallurgical products for both steels (ASTM A923-98). In the 1980s, China also started to develop the equivalent 00Cr22Ni5Mo3N duplex stainless steel of SAF2205 steel, which has better stress corrosion resistance in neutral chloride solution and H2S than 304L, 316L austenitic stainless steel and 18-5Mo duplex stainless steel . Can be cold, hot processing and molding, good weldability, the steel suitable for structural materials, is the world's most widely used duplex stainless steel grades.
00Cr22Ni5Mo3N Chemical composition:
- Silicon (Si) ≤1.0,
- Phosphorus (P) ≤0.03,
- Sulfur (S) ≤0.02,
- Chromium (Cr) 21.0 ~ 23.0,
- Nitrogen (N) 0.12 to 0.20,
- Molybdenum (Mo) 2.75 ~ 3.25