TU 14-1-2131-77. Iron-nickel steel
| Title: Hot-rolled plates of corrosion-resistant alloy CrN40MDB-VI (EP937-VI). Technical specifications. |
| Entered into force: 01.12.77 |
| Amendments: 5, 6 |
| Pages: 4 |
| Description of TU 14-1-2131-77: These specifications apply to hot-rolled sheets of stainless steel CrN40MDB-VI (EP937-VI), used in chemical engineering. |
| TU 14-1-2131-77 is located in: Sheets and Bands - |
| List of grades described in TU 14-1-2131-77: CrN40MDB (EP937) |
| Document TU 14-1-2131-77 provided by portal member. |
Iron-nickel steels
| Mark | Application |
| CRN40MDB-VI (EP937-VI) |
A weldable non-magnetic wrought alloy. Chemical equipment operating in a particularly aggressive environment. |
| 06XHN28MDT (EI943). |
Production of welded chemical equipment (reactors, heat exchangers, pipelines, tanks) operating at elevated temperatures. |
| CRN30MDB (EK77) |
Production of welded chemical equipment operating in particularly aggressive media producing complex mineral... |
| CRN40MDTU (EP543U) |
Production of a variety of chemical equipment (centrifugal separators, centrifuges, etc.), exposed when operating in... |
| 03CRNI28MDT (EP516). |
Production of welding equipment for the production of sulphuric acid at all concentrations up to 80 °C, nitrophoska, extracting... |
Alloying has a multidimensional effect on the quality of steel. Chromium increases hardness and corrosion resistance. Nickel makes the alloy ductile; Vanadium increases strength and resistance to impact. Molybdenum makes the alloy red-resistant and resists oxidation at high temperature. Manganese content above 1% increases hardness, impact strength and wear resistance. Titanium increases corrosion resistance. Copper increases ductility.
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