Pipe KHN70JU - ЭИ652
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| ХН70Ю | EI652 | 2.4872 | N06008 | Delivery from the stock, in stock | |
| ХН70Ю-Н | EI652 | Delivery from the stock, in stock |
Production KHN70JU
Pipe brand KHN70JU (formerly designated as ЭИ652) is made of heat-resistant alloy based on Nickel, which is contained in the composition 65,073 — 71,2%. This high-temperature alloy refers to the «doped». Part KHN70JU except Nickel chrome includes 26 — 29%. Therefore, the alloy KHN70JU also referred to as chromium-Nickel. As additives are: aluminum, 2.8 to 3.5%, iron — 1%, barium — not more than 0.10%, manganese — 0.3%, cerium — less than 0.03%, silicon up to 0.8%, phosphorus less than 0.015%, copper up to 0.07%, sulfur — up to 0,012%.
The percentage composition of (GOST 5632−72)
| Alloy | C | Fe | Mn | P | S | Ni | Cr | Cu | Al | Si | CE | Ba |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KHN70JU | ≤0.1 | ≤1 | ≤0.3 | ≤0.015 | ≤0.012 | 65,1−71,2 | 26−29 | ≤0.7 | 2.8 — 3.5 | ≤0.8 | ≤0.03 | ≤0.1 |
Steel smelted in an open induction furnace or used a method of electroslag remelting — method of producing metal by melting in a bath of electrically conductive slag under the action of electric current. This method significantly improves the quality of the alloys. The pipe is made according to GOST 12 766.4−77 and 5632−72. Hot forging is carried out at a temperature of 1150 °C at the beginning and 900 °C at the end of the process. After raskopki recommended quenching in air or water at 1100−1200°C. Weldability is limited. Requires heating to about 200 °C and the final heat treatment.
| t° | E 10— 5 | a 10 6 | Heat | Density |
|---|---|---|---|---|
| Grad | MPa | 1/Deg | W/(m·deg) | g/cm3 |
| 20 | 1.91 | 11.7 | 7,9 | |
| 200 | 1.73 | 13.86 | 13.9 | |
| 400 | 1.56 | 15.68 | 17.25 | 7,76 |
| 600 | 1.37 | 17.81 | 18.9 | |
| 800 | 25.47 | 24.8 | 7,59 | |
| 1000 | 21.21 |
Use
The manufacture of fragments of gas pipeline systems, whose work is held under moderate tension. This alloy is heat-resistant, but is unstable in sulfur-containing environments. Pipe KHN70JU long time can be operated at temperatures up to 800 °C, although able to withstand short-term increase in t° up to 1200 °C, but the greater the heating process causes the active formation of scale. Also alloy is used for the manufacture of heating elements, welding wire for welding parts and welding of metal structures in mechanical engineering. This steel can be used for the production of parts of afterburners, an additional combustion chambers of turbojet engines, designed to temporarily increase the thrust, and combustion chambers that operate with little voltage in the temperature range 1100−1200°C. by heating chromium and aluminum in the alloy composition active in forming the oxide film, which increases the material’s resistance to aggressive environments. In addition to gas pipeline systems KHN70JU pipe can be used for sanitation, construction of industrial building structures.
Buy at best price
In stock, LLC «Electrocentury-steel» a wide range of brand products KHN70JU standard and non-standard parameters. Prices due to technological features of production without the inclusion of additional costs. The timing of orders is minimal. Wholesale customers receive discounts.
