General characteristics

Circle of stainless steel CrN77TYR (old marking EI437) refers to the category of high heat resistance. The composition of the circle is regulated by GOST 5632- - - - - - - 72. Generally accepted international analogues of this alloy are Incoloy, Inconel and Hastalloy steels. The included titanium strengthens the alloy and improves technical characteristics, giving the circle strength and a homogeneous structure. Chromium and nickel form a surface oxide film that protects the wheel from corrosion and is easily repaired, if mechanically or chemically damaged.

Chemical composition:

Heat treatment

Hardening is carried out at 1090-1120 ° C, cooled in air or water. Aging takes place at 700-750°C for 12-16 hours. Weldability is limited. Preheating to 200 - 300°C with final annealing after welding is necessary to obtain a strong weld.

Advantages

The circle is resistant to atmospheric and soil corrosion, strong, reliable and durable, has a minimal tendency to brittle fracture at negative temperatures. Designed for continuous operation at t ° to 750 ° C, is highly resistant to nitric, sulfuric acid, aggressive industrial gases. Resistant to hot condensate, meets the most stringent sanitary requirements.

Disadvantages

Such expensive metals like chromium, nickel, molybdenum, titanium in the composition of steel CrN75MBTU, affect its cost. But the high strength, reliability and durability of the pipe, the possibility of recycling the material - reduces the high cost in the long term investment.

Application

Due to the strength, resilience, the ability to resist corrosion, a circle of CrN77TYR is used very widely. This - mechanical engineering, energy, automotive, gas, oil refining, chemical industry, construction. Parts of combustion chambers of internal combustion engines and turbines - both moving (rotating) and stationary (static) are made from the circle. This heat-resistant nickel circle, thanks to the manufacturability and corrosion resistance (in a vacuum, sea water vapor, in the air) in conditions of extreme temperature fluctuations, in demand at the most advanced frontiers of modern industry.

Buy at the best price

At the warehouse of Evek GmbH a wide range of products made of CrN77TUR alloy of standard and non-standard parameters is presented. Prices are conditioned by the technological features of production without the inclusion of additional costs. All products are certified. With us it is easy to buy the necessary products in bulk for large-scale projects, we also offer favorable conditions for retail customers. Products are manufactured with strict adherence to the technological process, which guarantees the highest quality, stored under cover or indoors to protect against any damage. Terms of realization of orders are minimal. Wholesale customers receive discounts.