Round, wire HN77TYUR - EI437BU
Round stainless steel HN77TYUR (obsolete marking ЭИ437) belongs to the category of high heat resistance. The composition of the circle of regulated GOST 5632 — — — — 72. Common international counterparts of this steel alloy are Incoloy, Inconel and Hastalloy. Part of the Titan hardens the alloy, improves the technical characteristics, giving a circle of strength and homogeneous structure. Chromium and Nickel form a surface oxide film which protects the circle from corrosion and is easily restored at mechanical or chemical damage.
|70 — 77,4||19−22||2.4 to 2.8||06−1,0||to 1||to 0.6||to 0.4||0,07||0,02||0,015||0,01||0,01||0,007|
Hardening is carried out at 1090−1120°C, cooled in air or in water. Aging takes place at a temperature of 700−750°C of 12 to 16 hours. Weldability is limited. To obtain a strong weld is required pre-heat to 200 — 300 °C final annealing after welding.
|t°||E 10— 5||a 10 6||Heat||Density|
The range is resistant to atmospheric and soil corrosion, durable, reliable and durable, has minimal tendency to brittle fracture at low temperatures. Designed for long be operated at t° up to 750 °C, has high resistance to nitric, sulfuric acid, corrosive environments and industrial gases. Resistant to hot condensate to meet the most stringent sanitary requirements.
Such expensive metals as chromium, Nickel, molybdenum, titanium in the steel composition KHN75MBTJU affect its cost. But high strength, reliability and durability of pipe, the possibility of recycling of material reduces the cost of virtually long-term investment.
Due to its strength, elasticity, ability to withstand corrosion, the circle HN77TYUR used very widely. It — engineering, energy, automotive, gas, oil refining, chemical industry, construction. From the circle to produce the details of the combustion chambers of internal combustion engines and turbines as the moving (rotating) and fixed (static). This Nickel-round, thanks to the manufacturability and corrosion resistance (in a vacuum, pairs of sea water, in air) in extreme temperature changes, demanded in the most advanced frontiers of modern industry.
Buy at best price
In stock, LLC «Electrocentury-steel» a wide range of products of alloy HN77TYUR standard and non-standard parameters. Prices due to technological features of production without the inclusion of additional costs. All products are certified. It is very easy to buy wholesale essential products for large-scale projects, we also offer favorable terms to retail customers. The products are manufactured with strict adherence to the requirements of the technological process that guarantees the highest quality, stored under cover or indoors to protect from any damage. The timing of orders is minimal. Wholesale customers receive discounts.