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The variety of the range of HN78T pipes and a wide range of standard sizes allows satisfying any customer requirements and choosing the right option for solving the most complicated engineering problem. Virtually all the advantages of the pipes ХН78Т are due to the optimally selected chemical composition. Resistance to many aggressive factors, the ability to withstand the destructive influence of high temperatures in the work area, manufacturability and good workability — this is the list of the most important useful qualities of KhN78T pipes .
An excellent combination of basic and auxiliary alloying substances in the composition of pipes ХН78Т explains their popularity and active application in many spheres of modern industry.
Percentage of GOST 5632−72 .
|Name of the characteristic||Symbol||Numeric value|
|Limit of proportionality (yield index for deformation of residual type), MPa||ST||300|
|Short-term strength (limit value), MPa||Sv||590−880|
|Relative elongation at breaking strength,%||D5||40|
|Value of relative narrowing,%||Y||50|
|Heat treatment||Hardening in air or water (980−1100 degrees)|
|Name of the characteristic||The numerical value of the parameter|
|The value of the elastic modulus (E), MPa||2.19|
|The coefficient of linear expansion, measured at a temperature of 100ºC (ах10 6), 1 / deg||12.2|
|Heat capacity (I), W / (mxgrade)||14.6|
|Density, g / cm 3||8.38|
|Specific electrical resistance ®, Ohmmm 2 / m||1.1|
Most often, pipes ХН78Т are used for the needs of machine-building, aviation industry, power complex. Considering the good weldability, the pipes ХН78Т are actively used in the manufacture of pipelines of any shape and complexity. It is important to note that although such an alloy does not require preliminary preparation of the surface of the semi-finished product before welding, but in some particularly important cases, to ensure high strength of the joint, the structural elements are heated to two hundred or three hundred degrees. The suture zone is then heat treated to relieve the residual stresses after the welding procedure is completed.
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On our site we offer a wide range of products from chromium-nickel alloys. The high quality of the products and the absence of intermediaries determine the most favorable conditions for the acquisition of the sheet ХН78Т for the solution of any production tasks. Delivery in the shortest time in any region of the country and abroad, the compliance of products of regulatory documentation has long won the trust of regular customers. Due to the reasonable cost and a wide range of semi-finished products, chromium-nickel alloys enjoy constant popularity in all spheres of production.