03H23N6 Alloy (ZI68)
Mark 03H23N6 refers to hromonikelmolibdenovym steels austenitic-ferritic class. Production is normalized by the following guests: 5632−72, 7350−77, and TU: 14−1-1554−75, 14−1-1905−76. This steel is used for welded cans are required in the production of nitric acid: 10% concentration at t ° 140 ° C; 20% HNO3 t ° to 120 ° C; 30% HNO3 t ° to 120 ° C; and 40−70% HNO3 to 100 ° C. Also it is used in the manufacture of ammonium nitrate, adipic acid, nitrogen fertilizers, in pipelines for the transport of nitrous gas from the compressor in the refrigerator first and second stages (Wednesday — nitrous dioxide, nitric acid, t º <230 ° C, pressures of up to 1 16 N / mm2). This steel has successfully replaces OZH18N11 alloys 03H19AGZN10, X18N9T and X18H10T, showing greater resistance to blade corrosion welds as compared with alloys doped titanium: 08H22N6T, 18Cr10NiTi X18H9T.
The percentage of
Mechanical properties at t = 20 ° C
|> TU||products||σ in N / mm²||σ 0,2, N / mm²||δ 5%|
|GOST 7350−77||thick sheets||590||345||25|
The mechanical properties at low and high t º (sheet of 6 mm tempered in water from 1050 ° C)
|es t, ° C||σ 0,2, N / mm²||σ in N / mm²||δ 5%||es t, ° C||σ 0,2, N / mm²||σ in N / mm²||δ 5%|
Mechanical properties at high tº (6 mm sheet, the water-hardened from 1050 ° C)
|es t, ° C||σ 0,2, N / mm²||σ in N / mm²||δ 5%||ψ,%||KCU, J / cm 2||n, of|
|1200||8||10||75; 88||61||100||8.0; 17.6|
Physical properties at 20 ° C t
Density 7.7 g / cm3; thermal conductivity of 0.168 · 10² W / (m · K); Electrical resistivity at 20 ° C equal to 0.74 • ohm mm2 / m modulus at 20 ° C = 20 · x10−4 N / mm2 ;; saturation magnetic field of 500 Oe reaches 0.3−0.5 (m · T) / A; and the temperature coefficient α of linear expansion as the temperature rises from 20 ° C to 100 ° C, 200 ° C and 300 ° C respectively of 9.6; 13.8 and 16×10−6 / ° C.
In accordance with GOST 7350−77, and TU 14−1-1905−76, this steel is resistant to intergranular corrosion by AM (duration of the test in the control solution 24 hours), GOST 6032−89 method. During tests in boiling 65% HNO3 high purity, density 1.41 g / cm³, the corrosion rate should not exceed 0.5 mm / year (test includes 3 cycles of 48 hours each). The test methods are subjected to two samples cut from the sheet in a quenching state provoking additional heating to 550 ° C for 1 hour.
The hot deformation of such a low-carbon steel is carried out at higher temperatures than other stainless steels; namely, in the temperature range 1280−1110 ° C. Steel bends well, stamped, both cold and hot conditions. Quenched in water to 1000−1050 ° C; the same heat treatment and is recommended to remove the work hardening after cold or hot deformation.
Steel welded well with all kinds of manual welding. For manual arc welding — better electrodes RLA-20. The strength of the welds is not less than 90% of the base material at equal corrosion resistance. Welds not require additional heat treatment, they are not prone to corrosion blade in boiling 65% HNO3.
All submitted 03H23N6 rental brand certified. The technical documentation includes data on the chemical composition, limiting the percentage of impurities; mechanical properties of products. We can buy in bulk, any semi-finished products for large-scale productions. We also offer optimal conditions for retail customers. High level of service and efficiency of service are the face of our company.
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In stock company «Electrovek-steel» is represented by a diverse range of stainless steel alloys. We supply certified products of domestic and foreign manufacturers. Our staff members are always happy to provide expert assistance in the selection of metal-roll. We employ some of the most experienced management consultants. Strict compliance with the rules of production, excellent product quality and minimal lead times are the face of our company. For regular customers introduced discount prices.