Steel 03KH17N14M3 (ЗИ66)
|Designation GOST Cyrillic||03Х17Н14М3|
|Designation GOST Latin||03X17H14M3|
|By chemical elements||03Cr17Н14Mo3|
|Designation GOST Cyrillic||ЗИ66|
|Designation GOST Latin||ZI66|
|By chemical elements||ЗИ66|
03KH17N14M3 steel is used: for the manufacture of rolled plates (6−20 mm); welded constructions working in the conditions of action of the boiling phosphoric, sulfuric, 10% acetic acid and sulfuric acid media intended for long-term service at operating temperatures to +600 °C, welded structures operating in environments of increased aggressiveness at temperatures down to -196 °C; all connections of equipment installed in radioactive environments and in contact with aggressive environment; pipes tsentrobezhnolityh for the manufacture of the coils of the tubular furnace installations production of ammonia, hydrogen, ethylene, carbon disulphide, etc., operating in the temperature range of +760−1060 °C and a pressure of 3.92 MPa (40 kgf/cm2); instrument in chemical engineering.
Romancelatina low carbon steel corrosion resistant austenitic class.
|Steel pipes and fittings to them||В62||GOST 11068-81, TU 1333-047-00220302-02, TU 14-159-250-95, TU 14-3-1348-85, TU 14-3-396-75, TU 14-3-1357-86, TU 14-158-137-2003|
|Processing of metals by pressure. Forgings||В03||GOST 25054-81|
|Sheets and strips||В33||GOST 5582-75, GOST 7350-77, TU 14-1-5054-91, TU 14-1-5056-91, TU 14-1-5071-91, TU 14-1-5073-91, TU 14-1-2144-77, TU 14-1-1541-75|
|Classification, nomenclature and General rules||В30||GOST 5632-72|
|Bars and shapes||В32||GOST 5949-75, TU 14-1-3303-82, TU 14-11-245-88|
|Blanks. Of the workpiece. Slabs||В31||OST 3-1686-90, TU 14-1-1183-74, TU 14-1-3931-84, TU 14-1-565-84, TU 14-1-2132-77, TU 14-134-293-91|
|Welding and cutting metals. Soldering, riveting||В05||OST 95 10441-2002|
|Thermal and thermochemical treatment of metals||В04||STP 26.260.484-2004|
According to TU 14-1-5071-91 the chemical composition is given for steel grade 03X17N14M3-VI. Deviations in chemical composition and content of residual elements (copper, tungsten, titanium, vanadium) - according to GOST 5632. It is allowed to introduce technological additions of cerium and calcium in an amount up to 0.050% each. The amount of cerium and calcium is calculated and chemical analysis is not determined, but is recorded in the quality document.
According to TU 14-158-137-2003, cerium and other rare-earth metals can be introduced by 0.2-0.3%, which are not determined by chemical analysis.
According to TU 14-1-1541-75, the chemical composition is given for steel grade 03X17N14M3 (ZI66). The tolerance for silicon content is + 0.40%, sulfur + 0.0050%. It is allowed to increase the molybdenum content by + 0.20%. The content of other residual elements is according to GOST 5632.
According to TU 14-1-5054-91, the chemical composition is given for steel grade 03Х17Н14М3-ВО (ЗИ66-ВО). The content of residual elements - copper, tungsten, titanium, vanadium - is allowed in accordance with GOST 5632. Cerium additions in the amount of 0.050%, calcium in an amount of 0.050% are allowed, the content of which is calculated and chemical analysis is not determined. In the melting sample and in finished rolled products deviations from the chemical composition are allowed in accordance with GOST 5632.
According to TU 14-1-5073-91 the chemical composition is given for steel grade 03X17N14M3 (ZI66). The introduction of technological additions of cerium in an amount of 0.050% and calcium in an amount of 0.050% is allowed, the content of which is calculated and chemical analysis is not determined.
|Section, mm||sT|s0,2, MPa||σU, MPa||d5, %||y, %||HB, MPa|
|Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Quenching in water or air with 1030-1070 °C|
|Hot rolled sheet (4,0-50,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Quenching in water or air with 1080-1100 °C|
|Hot rolled sheet (4,0-50,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Quenching in water or air with 960-1050 °C + Vacation at 275-350 °C, air cooling|
|Sheet hot-rolled steel in the delivery state on the other 14-1-1541-75. Quenching in water from 1050-1075 °C|
|Forgings. Quenching in water from 1070-1100 °C|
|Bars hot rolled and forged according to GOST 5949-75. Quenching in water from 1070-1100 °C|
|Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air with 1100-1120 °C|
|Bars on the other 14-1-3303-82. Quenching in water from 1050-1070 °C|
|Heavy-gauge hot-rolled steel in the delivery state on the other 14-1-5073-91. Quenching in water or under a water shower with 1080-1100 °C|
|Rolled plates in the state of delivery on the other 14-1-5054-91. Quenching in water from 1100-1120 °|
|Rolled plates in the state of delivery on the other 14-1-5071-91. Quenching in water with 1100-1140 °C|
|Thin-sheet cold-rolled steel in the delivery state on the other 14-1-5056-91. Quenching in water or under a water shower with 1060-1080 °C|
|Tsentrobezhnolityh pipe outer diameter 85-320 mm. Quenching in water or air from 1100-1150 °C|
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|
|y||The relative narrowing|
|HB||Brinell hardness number|
A description of the physical symbols
|Е||The normal elasticity modulus|
|l||Coefficient of thermal conductivity|
|R||UD. the resistivity|
|Weldability||Limited-weldability requires primene combined welding techniques.|
|Macrostructure and pollution||The macrostructure of the steel on the other 14-1-3303-82 should not be visible without using the magnifying devices of the traces of shrinkage, bubbles, cracks, and slag inclusions. Macrostructure and surface quality of the sheets on the other 14-1-5056-91 must meet M2a-M3A group surface finish GOST 5582.|
|Microstructure||The contents of alpha phase in the rental should not exceed 0.5 points. Steel on the other 14-1-3303-82 controlled for the content of alpha-phase. The contents of alpha phase shall not exceed 2.0 points.|
|Features of heat treatment||Products hromonikelevoj steel stabilized with titanium, to remove residual stresses and prevent stress corrosion cracking may be subjected to heat treatment according to the requirement stipulated in the draft mode which should be agreed with specialized organization. Steel products are subjected to hardening in order to improve the overall corrosion resistance and ductility, to eliminate the tendency to intergranular corrosion. Hardening is performed according to the mode: heating up to 1100-1120 °C, cooling in water or air. The 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. Products with wall thickness up to 10 mm is to be cooled in the air, more than 10 mm in water. Welded parts of complex configuration in order to avoid the leash is to be cooled in the air. To give steel the greatest plasticity and the elimination of the structure of the Sigma phase quenching is recommended when heated to the upper limit. Heat treatment nesvorny products to relieve internal stresses and prevent stress corrosion cracking should be carried out in the following mode: heating up to 900±10°C, exposure time of 2-3 h, air cooling. Welded components manufactured from steel hromonikelevoj with the use of unregulated electrodes, to remove residual stresses and prevent stress corrosion cracking should be subjected to heat treatment regime: heating to a 1020-1060 °C, exposure 2 h, air cooling. Products for welded low carbon pure austenitic electrodes, heat-treated to relieve residual stresses and prevent stress corrosion cracking should be carried out according to mode: heating to a 1020-1060 °C, exposure 2 h, cooling with the furnace to 300 °C, then in air. Products, welded electrodes, stabilized by niobium, should be termoobrabotki to relieve residual stresses and prevent stress corrosion cracking according to the mode: heating up to 1100-1140 °C, exposure 2 h, cooling with the furnace to 300 °C, then in air.|
|Corrosion resistance||The corrosion rate of hire should not exceed 0.5 mm/year. Steel 03KH17N14M3 has a high resistance against intergranular corrosion and knife than steel brands 08KH17N15M3T and 10X17H13M2T.|
|The tendency to intergranular corrosion||Bars on the other 14-1-3303-82 should not possess the propensity to intergranular corrosion in the hardened state.|