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HN77TYUR - EI437BU pipe

HN77TYUR - EI437BU pipe

General characteristics

Pipe HN77TYUR of corrosion-resistant special steel is classified as stainless steel pipes. It is intended to produce parts which are operated at high temperature (not higher 850ºС) in aggressive chemical environments. Due to the high content of Nickel, chromium, mechanisms and parts made from this alloy have high corrosion resistance, providing increased reliability of the equipment. Due to its cold resistance and the ability to hardening, brand HN77TYUR used in the manufacture of pipes of the suction type large thickness. However, despite its corrosion resistance, these pipes still unstable in the atmosphere of sulfur compounds and sulfur. Because of the content in the composition of the alloy of Nickel and titanium tubes are more expensive but are more reliable. Their cost kompensiruet durability and strength of the material.

The chemical composition of the alloy, in percent.
Ni Ti Cr Al Si Fe Mn Ce With P Pb B S
70 — 77,4 2.4 to 2.8 19−22 06−1,0 to 0.6 to 1 to 0.4 0,02 0,07 0,015 0,01 0,01 0,007

Quality brand HN77TYUR at t° 20°C:

— The ultimate short-term strength = 950 MPa;

— yield strength of 620 MPa.;

max. elongation at break — 20%;

— max. contraction is no higher than 15%;

— hardness after hardening Brinell — 255 — 321 MPa.

Mechanical properties at t°100°C:

the linear expansion coefficient of 12.67x10-6/°C;

— density of 8.18 g/cm3;

— heat capacity of 13.9 W/(m·deg);

the resistivity of 1,247, Mhmm2/m.


Due to its strength, high corrosion resistance and durability of the pipe Yarki HN77TYUR used in very harsh conditions in the form of containers for transportation of chemical active substances, This pipe is not always the end product. It is often used as a workpiece for punching, cutting, pressing in the manufacture of separators, bearings and other parts of rolling. Pipe brand HN77TYUR is also used in the manufacture of parts installations in the oil and gas industry, which operate at high temperatures (above 600°C), in metallurgy and mechanical engineering. The process of production of these tubes requires strict control of compliance with the international, domestic standards of quality and safety, which allows further without any restrictions to their use in construction, chemical, food industry, medical industry and mechanical engineering.

Buy at best price

LLC «AVEK global» implements of precision alloys at a bargain price. It is formed under the influence of world prices for metal without the inclusion of additional costs. Pipe HN77TYUR belongs to the popular group of steel products due to its real value and variety of output options. The face of our company determines the high level of service and excellent quality products. On the website LLC «AVEK global» reflects the most current information. Our managers are always happy to help answer questions. Implementation of orders takes minimal time. Deliveries go directly from the warehouse. This gives consumers significant savings on inventory and facilities. In the absence of the basic version, the required version of the products, we can produce them according to individual order.