Heat-resistant pipe HN77TYUR brand (formerly known as EI437) is manufactured in accordance with GOST 5632−72. International alloy counterparts — brands Incoloy, Inconel and Hastalloy. Seamless thick-walled tubes are rolled using the latest technology, designed for a very high pressure, durable, can be used by the food, chemical industry. Nickel in alloy composition forms on the surface of the oxide film, which protects against corrosion, is easily restored in case of damage.
|70 to 77.4||19−22||2.4−2.8||06−1,0||1||0.6||0.4||0.07||0.02||0,015||0.01||0.01||0,007|
Tempering is conducted at a tube 1090−1120 ° C, cooled in air or water. Aging takes place at t ° 700−750 ° C from 12 to 16 hours. Weldability limited. For lasting weld required preheating up to 200 — 300 ° C with a final annealing after the welding.
|t °||E 10 — 5||a June 10||Heat capacity||Density|
|hail||MPa||1 / Grad||W / (m · deg)||g / cm 3|
Finished pipe can be used for a long time at t ° up to 750 ° C, characterized by high resistance to nitric acid, sulfuric acid, corrosive environments of industrial gases. It is resistant to hot condensate, reliability and durability to meet the stringent sanitary requirements.
Such expensive metals such as chromium, nickel, molybdenum, titanium in the steel HN75MBTYU, affect its cost. But the high strength and durability of the pipe, the possibility of recycling material — reduces the high cost of practically in long-term investments.
Stainless steel thick-walled pipes are indispensable for the transport of gases under high pressure fluids. Due to the corrosion resistance, good thermal conductivity and can be used in the construction of thermal power stations for heat exchange equipment in conditions of extreme temperature changes. HN77TYUR pipe demand on the ships, in the tanks for the storage of chemicals. Aesthetic appeal, biological inertness, compliance with the requirements of SNIP make such pipe demand in medicine and food industry. In construction with using stainless steel pipes solve the problem of water supply in private homes. Profiled polished pipes used by designers.
All submitted articles from the alloy HN77TYUR 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» in the presence of a wide range of iron-nickel alloys at the best price. It is formed with European rates on non-ferrous metals without the inclusion of the additional costs. Quality Certificate for products including data on chemical composition, limiting the percentage of impurities; mechanical properties. Cooperation with us gives a number of advantages. Our experts will be happy to provide advice when you buy precision alloys, the correct choice of which will depend on the performance and durability of the equipment. We will help you determine not only the optimum parameters of the product, but also offer the best price.