|Designation GOST Cyrillic||18Х13Н3|
|Designation GOST Latin||18X13H3|
|By chemical elements||18Cr13Н3|
18Х13Н3 steel is used: for the manufacture methods of hot and cold deformation and machining of various parts with high ductility for aircraft and instrumentation, exposed to shock loads and working at temperature to 450−500 °C; products exposed to slightly aggressive media at room temperature.
Steel corrosion-resistant martensitic class.
|Bars and shapes||В22||GOST 1133-71, GOST 2590-2006, GOST 2591-2006|
|Sheets and strips||В33||GOST 4405-75|
|Bars and shapes||В32||TU 14-1-2139-77|
According to TU 14-1-2139-77, the following deviations in chemical composition in finished products are allowed, provided that the mechanical properties are satisfied: chroma ± 0.20%, nickel ± 0.30%. Since 01.01.1991 steel is not allowed to be used in newly created and modernized machinery. At the request of the customer, steel 18H13N3 can be supplied with a content of 0.15-0.19% carbon, which is specified in the order.
|Section, mm||sT|s0,2, MPa||σU, MPa||y, %||KCU, kJ/m2||HB, MPa|
|Bars and strips steel hot-rolled and forged in the delivery condition on the other 14-1-2139-77. Quenching in oil with 1000-1060 °C + Vacation at 600-650 °C, cooling in oil or air|
Description mechanical marks
|sT|s0,2||Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%|
|σU||Limit short-term strength|
|y||The relative narrowing|
|HB||Brinell hardness number|