Alloy name HN75MBTYU indicates the alloying elements included in its composition: X — chromium (Cr), N — Nickel (Ni), M — molybdenum (Mo), B — niobium (Nb), T — titanium (Ti), Yu — aluminum (Al). The number 75 after the letter N indicates the average percentage of nickel. It was he who imparts high temperature strength and ductility of the material resistance to aggressive environments. Available in the form of a sheet of hot or cold rolled.
The percentage of leaf HN75MBTYU
|to 77.6||19−22||1.8−2.3||up to 1||0.8||0.9−1.3||0.35−0.75||0.35−0.75||0.4||0.12||0.1||to 0.012|
Thanks to the alloying elements included in the alloy austenitic steels group. They are characterized by high resistance to heat, easily polished, have an attractive appearance. HN75MBTYU sheet has greater heat resistance than similar alloys (pearlite or martensite) has high workability (ductility, weldability), oxidation resistance — resistance to gas corrosion and thermal fatigue. Due to the high merits of such a list is essential for parts that need a long time to work at t ° from 700 to 900 ° C.
The main property of the sheet material — heat resistance greatly complicates its handling. Tests show that the precipitation hardening in the range (700−800 ° C) ductility characteristics vary from 3 to 10%. The sheet can be welded and soldered. Welding is permitted to produce without heating and subsequent heat treatment. Experts know the specifics of the technology of welding of austenitic steels, and the choice of welding process come primarily from the sheet thickness and the shape of the structure. It is known that the best quality welding and burn exception alloying elements is achieved by using coated electrodes ftoristokaltsievyh materials. For successful brazing products dunite or platinum catalysts must be used because surface of the sheet of nickel-chrome alloy coated film of chromium oxide. Film resistance is quite high, which causes difficulty in soldering.
|t °||E 10 — 5||a June 10||Heat capacity||Density|
|hail||MPa||1 / Grad||W / (m · deg)||g / cm 3|
HN75MBTYU high-temperature alloys, due to its high resistance to creep and fracture at high temperatures, are widely used in industrial production, for example, operating at moderate voltage under high temperature: parts of gas and combustion chambers. High level of resistance (700−800 MPa) and long-term strength (250−300 MPa) alloy allow its use for the manufacture of conductivity of steam and paronagrevatelnyh pipes, various systems of ultra-high pressure, steam and gas turbines, as well as use it for details of any engines up to jet.
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In stock «Electrovek-steel» company offers a wide range of metal-roll standard and custom settings. Today buy HN75MBTYU sheet and other rolled easily through our representative offices. This can be done without leaving the office, for example, place your order online through the Moscow branch of our Company. To buy a tape, you need only place your order and click «buy». Lead times are minimal. When wholesale purchases include preferential discounts.