Foil, sheet, strip made of X2CrNi19-11
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X2CrNi19−11 alloy relates to chrome-nickel steels of austenitic class. It possesses high resistance to intercrystalline corrosion of the main metal and welded joints. It can operate in corrosive environments in a temperature range of up to 80 °C. It is used in manufacture of welded equipment for extraction of high-concentrated nitric acid (65%), nitrophos, extraction of phosphorus acids and similar compositions that are characterized by a high corrosive power.
Percentage composition of alloy, GOST 5632−72
|9,5 — 11||≤ 0,03||≤ 2||Basis||17 — 19||≤ 0,035||≤ 0,8||≤ 0,02|
Physical properties at t° of 20°С:
— Heat conductivity is 0,134 10² V/(m К).
— Density is 7,7 g/cm3
— Module of elasticity is 17,8 10 — 4 N/mm2
— Hardness is 200 HB MPa -1
— Unit-area resistance is 0,75 Ohm-mm2/m;
— Magnetic permeability is 1,255 micro-tesla/m in H field of 500
It is smelted in electric-arc furnaces. It is classified as a stainless corrosion resistant simple heat-resistant steel of austenitic class. It complies with severe requirements of national standard. It is well weldable and can be exposed to cutting. Available mill-products: rod, pipe, wire, sheet, strip. Manufacture is specified by the following GOSTs: 1133−71, 5582−76, 5632−72; technical conditions: 14−1-1160−74, 14−1-1180−74, 14−1-2144−77, 14−1-2450−78, 14−1-490−72, 14−1-3652−83, 14−1-3071−80, 14−4-3071−80.
Starting temperature of hot working (stamping, rolling, forging) is 1170 °C and finishing is about 900 °C. Semi-fabricated can be easily cut and welded with manual or automatic welding. There are used OZL-24 electrodes with wire core 02H17N14S4 during manual, automatic electric-arc, or argonarc welding. To protect welding seams, there is applied finishing heat treatment.
X2CrNi19−11 grade has gotten a wide application in manufacture of chemical welding apparatus, reactors, pipelines. X2CrNi19−11 sheet is utilized in manufacture of tanks that operate in extracted phosphorus, 55% sulfuric acids, spirit of verdigris, and similar corrosive environments at a temperature of 80 °C. It is applied in synthesis of mineral fertilizers. X2CrNi19−11 is used as a means of clad layer of centrifugally cast pipes, for convective coils and two-layered hot-rolled corrosion-resistant sheets that operate in radioactive environment.
X2CrNi19−11 sheet, strip supplier
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