03KH22N6M2 - эи67 aisi 301 sheet, round, wire
Brand 03KH22N6M2 refers to hromonikelevoj steels austenitic-ferritic class. Production normalized following GOST: 5632−72, 7350−77 and the 14−1 — 1905−76. Steel is used for welded vessels in the production of mineral fertilisers, sulphuric and acetic acid, urea and caprolactam. The permissible operating temperature of such containers from -70 to +300°C. This steel, and steel 08KH21N6M2T (ЭП54), recommend that instead of mark 10X17H13M2T, since stamps, alloy of titanium has been much less resistance to stab corrosion of welds
|≤0,03||21−23||≤0,4||1−2||1,8 -2,5||5.5 to 6.5||≤0,02||≤0,035||Basis|
Mechanical properties at 20°C
|GOST||Products||σin N/mm2||σ0,2, N/mm2||δ5, %|
|7350−77||The leaves are thick||590||345||25|
|THAT 14−1-1905−76||The leaves are thin||550||300||25|
Mechanical properties depending on the temperature (sheet of 6 mm tempered in water at t° 1050°C)
|tCOI, °C||σ0,2, N/mm2||σin N/mm2||δ5, %||ψ, %||tCOI, °C||σ0,2, N/mm2||σin N/mm2||δ5, %||ψ, %|
Mechanical properties at high t º (sheet 6−10 mm, tempered in water at t° 1050°C)
|tCOI, °C||σ0,2, N/mm2||σin N/mm2||δ5, %||ψ, %||n,|
|800||140−200||170−220||53; 90||68||3.9 to 4.6|
|1000||50||52||61; 109||85||5,5; 6,7|
|1200||11||12||60; 80||77||The 10.5−19,6|
Physical properties at 20°C
Density: 7.7 g/cm3; specific resistance = 0.7 Ω • mm2/m; magnetic saturation in a field of 500 e reaches to 0.6 (T · m)/A; modulus of elasticity = 20·x10−4 N/mm2; and the temperature coefficient of linear expansion of α with increasing temperature from 20 °C to 100 °C, 200 °C and 300 °C respectively 9,5; of 13.8 and 16.6×10−6/°C.
Resistance to corrosion
According to GOST 7350−77, THE 14−1-1905−76 03KH22N6M2 steel resistant to intergranular corrosion during the test according to method AM GOST 6032−89 (24 hours). Pass the test on the quenched samples with an additional provoking heated to 550 °C (within an hour). During the test in boiling 65% HNO3 with a density of 1.41 (3 cycles at 48 hours) the corrosion rate in the tempered condition shall not exceed 0.5 mm/year. Resistance to General corrosion similar to steel 08KH21N6M2T (ЭП54).
Hot deformation of such low-carbon steel is carried out at elevated temperatures, comparatively with other corrosion resistant steels, namely when 1280−1100°C. This steel is well stamped, bent in cold and hot conditions, well cut. Tempered in water at 1000−1050°C, the same heat treatment is applied for removing the work hardening after cold or hot deformation.
Good cooks all types of manual welding. For manual arc welding — better electrodes OzL-20. When TIG welding using wire 03Х17Н14М2 (ЭП551). The strength of the welded seams is at least 90% of the basic material of equal corrosion resistance. Welded joints do not require additional heat treatment.
Submitted to the rental brand 03KH22N6M2 certified. In the technical documentation included data on chemical composition, limiting the percentage of impurities; mechanical qualities of the products. We can buy in bulk any semi-finished products for large-scale production. We also offer optimal conditions for retail customers. A high level of service and speed of service are the face of our company.
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In stock company «Elektrovek-steel» always in stock products from stainless steel alloys at a reasonable price. It is based bets on European non-ferrous metals without incorporating extra cost. Supply certified products of domestic and foreign manufacturers. Cooperation with us gives a number of advantages. Our experts will be happy to provide advice in the purchase of any of the alloys, the correct choice of which will depend on the performance and durability of equipment. We will help to determine not only the optimal parameters of the product, but also offer the best price.