X15CrNiSi20-12, aisi 309, tp 309s
|Grade||analogue||W. Nr.||Aisi Uns||En||Order|
|20Х20Н14С2||EI211||1.4828||309||X15CrNiSi20-12||Buy from stock, view availability|
Steel heat-resistant wire and rod of grade X15CrNiSi20−12 are made on the basis of chrome-nickel high-alloyed alloy, in which composition are presented nickel (12−15%) and chrome (19−22%). As a means of masteralloys, there can be added manganese (up to 1.5%), copper (0.3%), silicon (2−3%), carbon (0.2%), titanium (0.2%), sulfur and phosphorus (parts per thousand).
Percentage composition GOST 5632−72
|≤ 0,3||2 — 3||≤ 0,2||≤ 1,5||≤ 0,035||19 — 22||12 — 15||≤ 0,025||≤ 0,2|
Calibrated bar X15CrNiSi20−12 is made according to the following GOSTs: 7417−75, 8559−75 and 8560−78. Silver steel and brushed bar are made according to GOST 14 955−77, forged blankets and forgings — according to GOST 1133−71.
Rod is made by stamping method — flow of metal to specific dimensions. Hot stamping is considered to be a cheaper, less complicated and energy-consuming method as long as there are needed fewer efforts for hot metal forming. While manufacturing of rod, there are stamped a few surfaces at the same time. That is why the surface turns out to be smooth and uniform. The dimensions are kept according to customer’s requirements. Processing of multiple surfaces is more profitable — there is possible a manufacture of blankets with different sections due to a die with intended sizes.
It is used for parts of high-temperature installation for needs of mechanical engineering and petroleum-refining industry. There are manufactured parts of thermal furnaces, furnace conveyors that are intended to operate at a temperature of up to 1000 °C and other parts of industrial high-temperature furnaces. A period of operational use of products is limited by a temperature of 900 °C. After this, there begins an extensive oxide scale formation. A rod is used in metallurgic, chemical, textile, paper-and-pulp industries. A wire is used at steel welding. Grids and various protections can be made out of this wire.
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