Steel 02Х8Н22С6 (ЭП794)
|Designation GOST Cyrillic||02Х8Н22С6|
|Designation GOST Latin||02X8H22C6|
|By chemical elements||02Cr8Н22С6|
|Designation GOST Cyrillic||ЭП794|
|Designation GOST Latin||EP794|
|By chemical elements||-|
02Х8Н22С6 steel is used: for the production of chemical equipment operating in the environment of concentrated nitric acid at elevated temperature; welding wire.
Low carbon steel corrosion resistant heat resistant Nickel-containing austenitic.
The steel is melted only by special methods — sh, PD, and ID.
|Thermal and thermochemical treatment of metals||В04||STP 26.260.484-2004|
|Blanks. Of the workpiece. Slabs||В31||TU 14-1-3164-81|
|Welding and cutting metals. Soldering, riveting||В05||TU 14-1-3233-81|
|Bars and shapes||В32||TU 14-1-3812-84|
|Sheets and strips||В33||TU 14-1-5075-91, TU 14-1-5076-91|
|Steel pipes and fittings to them||В62||TU 14-3-1024-81|
According to TU 14-3-1024-81, TU 14-1-3812-84 the chemical composition is given for steel grade 02Х8Н22С6 (EP794).
According to TU 14-1-3164-81 the chemical composition is given for steel grade 02X8N22S6 (EP794). Deviations in the carbon content by +0.010%, chromium, nickel and silicon by ± 0.10 each are allowed.
According to TU 14-1-3812-84 the chemical composition is given for steel grade 02Х8Н22С6 (EP794). Deviations in the content of chromium, nickel, silicon ± 0.10% each, carbon + 0.010% are allowed in the finished product. Limit deviations and the content of residual elements - according to GOST 5632.
|Section, mm||sT|s0,2, MPa||σU, MPa||d5, %||KCU, kJ/m2|
|The billet according to TU 14-1-3164-81. The longitudinal samples. Quenching in water from 1050 °C|
|Bars on the other 14-1-3812-84. Quenching in water from 1050 °C|
|Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water from 1050-1070 °C|
|Pipe cold and warm in the delivery condition on the other 14-3-1024-81|
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|
|d5||Elongation after rupture|
|Macrostructure and pollution||In the macrostructure of the billets on the other 14-1-3164-81 not toproceed traces of shrinkage, porosity, subcortical bubbles, cracks, foreign non-metallic inclusions, delaminations visible to the naked eye. The norm of non-metallic inclusions by the maximum score shall not exceed : oxides of stroke - 4,0, oxides of point - 2,0, silicates fragile - 4,0, silicates plastic - 1,0,, non-deformed silicates - 1,0, sulphides and 1.0.|
|Features of heat treatment||The product of the steel subjected to quenching in water from 1050 °C. holding Time at the heating for hardening to products with a wall thickness up to 10 mm - 30 min, over 10 mm - 20 min + 1 min per 1 mm maximum thickness.|