Surface Treatment Of Duplex Stainless Steel S39240
According to EN 10088-1: 2007 and EN 10088-3: 2007, stainless steel two-phase duplex stainless steel 1.4462, X2CRNIMON22-5-3 resistant to intergranular and stress corrosion, ferrite-austenite structure. 1: 304 belongs to sub The stainless steel in the annealed state belongs to a single austenite structure after being annealed, and is not magnetic.
S39240 chemical identity:
- Carbon C: ≤0.03
- Silicon Si: ≤1.00
- Manganese Mn: ≤2.00
- Phosphorus P: ≤0.030
- Sulfur S: ≤0.020
- Chromium Cr: 21.00 ~ 23.00
- Molybdenum Mo: 2.50 ~ 3.50
- Nickel Ni: 4.50 ~ 6.50
- Vanadium V:-
- Nitrogen N: 0.08 ~ 0.20
S39240 Standard and Utilization
High-temperature-resistant ferrite-austenite dual-phase and dual-phase steels, manipulating NaCl, CaCl 2, LiCl 2 in acids and salts, increasing chromium-Cr, molybdenum-molybdenum, and nitrogen-N content, being supersaturated The production temperature in the form is 1020-1100 ℃, and it exists in the form of bars, pipes, plates and forgings.
The characteristics of the two-phase X2CrNiMoN22-5-3 steel are high intergranular corrosion resistance, stress corrosion resistance, surface corrosion resistance, low thermal shrinkage coefficient and working temperature up to 200-250 ° C. Compared with ordinary austenitic acid-resistant steel, it has better strength and higher wear resistance and erosion resistance.
The above-mentioned two-phase grading depends on begging, especially used in chemical, shipbuilding, aviation, high temperature, papermaking, mining, petrochemical and power industries.
From such manufactured parts and sub-assemblies, such as pumps, coolers, aircraft, bolts, bushings, shafts, valves, tanks and containers, used to transport chemical materials on chemical ships, seawater concentration plant pipes, mixers, Swing arms, offshore equipment, pressure oil tanks, rotor micro-fans, petrochemical and processing plants, containing chlorides, pressure rollers, mechanical parts and equipment used in the paper industry.
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