Composition

Grade 37Х12Н8Г8МФБ-sh (ЕИ481-sh) is a heat-resistant iron-based alloy and has in its composition such components as chromium (11−13%), nickel and manganese (about 8% each). In addition, this chromium-nickel alloy includes additives (up to 1%) of elements such as molybdenum, vanadium and niobium. The composition includes 0.37% carbon, hundredths of a percent silicon, phosphorus, and sulfur. The alloy is melted in open electric arc furnaces. Semifinished products are forged at 1150−1180 degrees Celsius at the beginning to 850 degrees Celsius at the end of treatment. Tubes and rods are quenched at t° 1050−1150 in air.

Percentage composition

Welding

This steel grade, like most heat-resistant alloys, is difficult to weld. To get a high quality connection requires additional steps: heating to 200−300 degrees and the final heat treatment after welding. Bonding of structural parts and elements is made by manual arc welding.

Technological characteristics

Applications

Pipe and tube due to the heat resistance and heat resistance are used for the manufacture of parts of the attachment of high-temperature firing furnaces, fragments of internal combustion engines, turbojet aircraft engines. The heat resistance is dependent on: the strong bonds between the atoms of steel and the structure of the substance. High chemical and corrosion resistance allows the use of the alloy in the petrochemical industry. The low nickel content makes products made of this alloy resistant to sulfuric environment. Thin wire is used in furnace conveyor grids. Tubes 37Х12Н8Г8МФБ-sh can be used as a part of burner device, covers thermoelectric converters. This alloy does not contaminate thermocouple electrodes and it provides reliable protection for thermocouple wire when working in hazardous conditions. Such pipes can withstand temperatures of 1250−1300 degrees. They are used as flues for the removal of combustion products of industrial and domestic furnaces.

Buy at the best price

At the warehouse of Evek GmbH a wide range of heat-resistant rolled steel standard and non-standard parameters. It is not difficult to buy a steel tube or a circle of 37Х12Н8Г8МФБ brand from us. Our offices are located You can make a purchase without leaving your office, for example, online through the website of the Company. To purchase you only need to place an order and click «buy». If necessary, our managers can consult you on any current issues. They will give you all necessary information concerning products, price range, and terms of sale. Lead time is minimal. In case of bulk purchases we provide discounts.