Sheet ХН75МБТЮ - ЭИ602
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| ХН75МБТЮ | EI602 | 2.4856 | N06625 | NiCr22Mo9Nb | Delivery from the stock, in stock |
general characteristics
The name of the alloy KhN75MBTU indicates the alloying elements that make up its composition: X — chromium (Cr), H — nickel (Ni), M — molybdenum (Mo), B — niobium (Nb), T — titanium, Aluminum (Al). The number 75 after the letter H indicates the average percentage of nickel. It is he who imparts high heat resistance and plasticity to the material, stability in aggressive environments. Produced in the form of a sheet of hot or cold rolled products.
The percentage composition of the sheet ХН75МБТЮ
| Ni | Cr | Mo | Fe | Si | Nb | Al | Ti | Mn | FROM | Cu | S |
|---|---|---|---|---|---|---|---|---|---|---|---|
| To 77.6 | 19−22 | 1.8−2.3 | Up to 1 | Up to 0,8 | 0.9−1.3 | 0.35−0.75 | 0.35−0.75 | Up to 0,4 | Up to 0.12 | Up to 0,1 | Up to 0.012 |
Due to alloying elements, this alloy is included in the group of austenitic steels. They are highly resistant to heat, easy to polish, and have an attractive appearance. The sheet ХН75МБТЮ has a high heat resistance in comparison with similar alloys (pearlite or martensitic), is characterized by high processability (ductility, weldability), scale resistance — resistance to gas corrosion and temperature fatigue. Due to its high quality, this sheet is indispensable for parts that must work long at t ° from 700 to 900 ° C.
Treatment
The main property of sheet material — heat resistance makes it much more difficult to process. Tests show that in the range of precipitation hardening (700−800 ° C) the ductility characteristics vary from 3 to 10%. The sheet can be welded and soldered. Welding can be done without heating and without subsequent heat treatment. Specialists know the features of the welding technology of austenitic steels, and when choosing the welding method, they are primarily based on the thickness of the sheet and the shape of the structure. It is known that the best quality of welding and elimination of fumes of alloying elements is achieved by using electrodes coated with fluorocalcium materials. For successful soldering of products it is necessary to use dunite or platinum catalysts. The surface of the sheet of chromium-nickel alloy is covered with a film of chromium oxides. The resistance of the film is quite high, which causes difficulties in soldering.
| T ° | E 10 — 5 | A 10 6 | Heat capacity | Density |
|---|---|---|---|---|
| Grad | MPa | 1 / Grad | W / (m · deg) | G / cm 3 |
| 20 | 1.9 | 8.3 | ||
| 200 | 13.4 | 15.3 | ||
| 400 | 1.65 | 15 | 18.5 | 8.16 |
| 600 | 1.5 | 16.5 | 22.3 | |
| 700 | 1.37 | 18.1 | 24.4 | 8 |
Application
The high-temperature alloy KhN75MBTU, due to its high creep resistance and degradation in the high-temperature condition, is widely used in industrial production, for example, for workers operating at moderate voltage under high temperature conditions: gas pipeline parts and combustion chambers. High resistance level (700−800 MPa) and long-lasting strength (250−300 MPa) of the alloy allow it to be used for the production of steam and steam heating pipes, various ultra-high pressure systems, gas and steam turbines, and also to use it for parts of any engines, Reactive.
Buy at the best price
In the warehouse of Electrovek-Steel LLC there is a wide range of metal products of standard and non-standard parameters. Today you can buy a sheet of ХН75МБТЮ and other types of rolled metal easily through our representative offices. You can do this without leaving the office, for example, by placing an order on the Internet through the Moscow branch of our Company. To buy a tape, you just need to place an order and press the «buy» button. The lead time for orders is minimal. At wholesale purchases discounts are given.
