Sheet, Circle, Wire KhN55MBYu - EP666

International Equivalent

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KhN55MBYu EP666 Delivery from the stock, in stock


Heat-resistant nickel-based hard-alloy of CrN55MbU (CrN63M9B2U; EP666; CrN55MbU-VD; CrN55MbU-ID; EP666-VD; EP666-ID) is used in power engineering for parts of gas turbine engines, pipeline fittings of nuclear power plants. In modern engines the material for turbine blades must have high resistance to breakage under low cycle and thermal fatigue which is the main cause of failure today. The danger of fracture can be exacerbated by surface reactions associated with grain boundary loosening and gas corrosion. The material requirements for turbine blades are due to the latest developments in engine design, they are aimed at increasing ductility, heat resistance, resistance to dynamic loads and thermal fatigue, as well as resistance to gas corrosion.


Sheet and section semi-finished products: bars, hot-rolled sheets, forgings, tubes. The recommended maximum operating temperature for a limited time is 900°C, and the temperature of the environment, at which heavy dross starts to form, is 1100°C.

Description Designation Technical specifications
Forgings Metal forming. В03 Technical specifications 14-1-3628-83
Thermochemical and heat treatment of metals В04 ST TSKBA 016-2005
Blanks. ingots. Slabs В31 Technical specifications 14-1-3626-83
Shaped and section rolled products В32 Technique 14-1-2606-79
Sections and sheets В53 Techn.conditions 14-1-3191-81

Shape, dimensions, steel grade are regulated by the following requirements:

GOST 8559-75 - square calibrated;

GOST 8560-78 - hexagonal calibrated;

GOST 14 955-77 - with special surface finish;

GOST 2590-88 - hot-rolled round;

OST 14-2-205-87, GOST 2591-88 - hot-rolled square;

GOST 1133-71 - forged square and round;

GOST 4405-75 - hot-rolled and forged strip;

GOST 103-76 - hot-rolled strip;

GOST 2879-88 - hot-rolled hexagonal;

GOST 7417-75 - round calibrated.

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The range of products of grade XN55MBYu from Evek GmbH will satisfy any consumer. The price is determined by the technological features of production without including 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. Technological configuration of each production stage gives us the opportunity to fulfill individual orders of non-standard parameters. Products are manufactured with strict compliance with the requirements of technological process, which guarantees the highest quality. On our site you will find all the necessary information. We are waiting for your orders.