Standards sheet steel 08KH21N6M2T and ЭП54
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Alloy 08KH21N6M2T relates to chromium-Nickel-molybdenum steels austenitic-ferritic class. This alloy is used in the manufacture of distillation columns, extraction, Packed, purge and other containers, storage facilities, tanks, etc. This steel is well exploited in redox environments in acid production, pulp and paper industry and organic synthesis.
The percentage composition of the alloy 08KH21N6M2T
|≤0,8||Basis||20−22||1,8−2,5||≤0,025||≤0,035||5.5 to 6.5||≤0,8||0,2 — 0,4|
Steel is smelted in electric arc furnaces. This alloy is classified as stainless steel corrosion-resistant ordinary heat-resistant steel. austenitic-ferritic class. Manufacture of rolled products from this alloy listed the following technical conditions 14−3-59−72 and 14−1-894−74 and GOST: 5582−75; 25 054−81; 5632−72; 7350−77; 5949−75.
Alloy characteristics (t° 20°C)
· The thermal conductivity of 0,126 · 102 W/(m · K)
· Density: 7.7 g/cm3
· Modulus of elasticity is 19.3 · 10— 4 N/mm2
· Hardness — HB 200 MPa -1
· Resistivity 0.75 Omhm2/m
· The magnetic permeability in a field of 500 e of 0.6 (T · m)/A)
The electrodes 06Х21Н6М2Т (cover anv-17) and the electrodes of SV-04Х19Н11МЗ (covered by SSSI-13) are well suited for manual welding of steel sheet thickness not exceeding 10 mm, as well as to fill the cutting steel with a thickness more than 10 mm When manual TIG welding with non-consumable electrode steel sheet thickness of 10 mm, and in order to fill cutting steel thicker than 10 mm, recommended wire SV-04Х19Н11МЗ. The strength of the weld seams is 90 percent of the base metal. Connection of all types of welding are resistant to intergranular and General corrosion.
Steel of this brand used in the manufacture of distillation columns, extraction, Packed, purge and other containers, storage facilities, tanks, etc. This steel is well exploited in redox environments in acid production, pulp and paper industry and organic synthesis. The steel used in the production of acetic, phosphoric and sulphuric acids, melamine, caprolactam, urea. It is needed to obtain the ammonium chloride (the method of evaporation), filtration apparatus — sulfite and ammonium sulfate at a temperature of 100−110°C With the addition of sulfuric acid to 20 g/L.
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