GOST steel grades

GOST steel Grades

GOST Steel grades Substitute Weldability GOST 380−94 St0   Welded without any restrictions St2kp St2ps St2sp St2sp St2ps Welded without any restrictions. For thickness of more than 36 mm recommended heating and subsequent heat treatment St3kp St3ps ---«--- St3ps St3sp St3sp St3ps ---«--- St3gps St3ps Steel 18Гпс ---«--- St4kp     St4ps St4sp Cooks limited St5ps St5sp St6sp St4sp Welded is limited. Recommended heating and subsequent heat treatment St6ps   ---«--- St6sp St5sp ---«--- GOST 801−78 SHKH15 Steel: ШХ9, ШХ12, SHKH15SG The method of welding the CCC SHKH15SG Steel khvg, SHKH15, 9KHS, HUSH ---«--- SHKH4   ---«--- GOST 1050−88 08 Steel 10 Welded without restriction, except the parts after chemical-thermal treatment 08KP 08ps Steel 08 ---«--- 10 Steel: 08, 15, 08KP ---«--- 10kp 10ps Steel 08KP, 15kp, 10 ---«--- 15 Steel: 10, 20 ---«--- 15kp 15ps Steel: 10kp, 20kp Welded without any restrictions 18kp   Welded without any restrictions 20 Steel: 15, 20 Welded without restriction, except the parts after chemical-thermal treatment 20kp 20ps Steel: 15kp ---«--- 25 Steel: 20, 30 ---«--- 30 Steel: 25, 35 Welded is limited. Recommended heating and subsequent heat treatment 35 Steel: 30, 40, 35G ---«--- 40 Steel: 35, 45, 40G ---«--- 45 Steels: 40X, 50, 50Г2 Difficult weldability. Necessary preheating and subsequent heat treatment 50 Steel: 45, 50G, 50Г2, 55 ---«--- 55 Steel: 50, 60, 50G Does not apply to welded structures 58 (55пп) Steel: 30KHGT, 20KHGNTR, 20KHN2M, 12ХНЗА, 18HGT ---«--- GOST 1414−75 A20 Steel A12 Does not apply to welded structures A30 A40G Steel A40G ---«--- GOST 1435−90 U7, U7A Steel: U8 Does not apply to welded structures U8, U8A Steel: u7, U7A U10, U10A ---«--- U9, U9A Steel: u7, U7A, U8, U8A Does not apply to welded structures U10, U10A Steel: U10, U10A ---«--- GOST 4543−71 15X Steel: 20X Welded without restriction, except the parts after chemical-thermal treatment 20X Steel: 15X, 20KHN, 18HGT ---«--- 30S Steel: 35X Partially welded 35X Steel: 40CR ---«--- 38KHA Steel: 40X 35X Hard-welded 40X Steel: 45KH, 35ХА, 40HS Hard work, requires heating and subsequent heat treatment 45KH Steel: 40CR, 45KH, 50KHN ---«--- 50S Steel: 40CR, 45KH, 50KHN ---«--- 15G 20G Steel: 20G, 20, 30G Good weldability 30G Steel: 35, 40G Limited weldability. Recommended heating and subsequent heat treatment 35G   ---«--- 40G Were: 45, 40 ---«--- 45G Steel: 40G, 50G Difficult weldability. Recommended heating and subsequent heat treatment. 50G Steel: 40G, 50 ---«--- 10G2 Steel: 09Г2 Welded without any restrictions. 35G2 Steel: 40CR Difficult weldability. Requires heating and subsequent heat treatment. 40G2 Steel: 45G2, 60G ---«--- 45G2 Steel: 50Г2 ---«--- 50Г2 Steel: 45G2, 60G Does not apply to welded structures 47GT Steel: 40ХГРТ Does not apply to welded structures 18HGT 25 Steel: 30KHGT, 25KHGT, 12KHN3A, 12KH2N4A, 20KHN2M, 20KHGR Welded without restriction, except the parts after chemical-thermal treatment 20KHGR Steel: 20KHN3A, 20ХН24, 18Х1Т, 12KHN2, 12KHN3A ---«--- 25Х1Т Steel 18HGT, 30KHGT, 25KHGM Require subsequent heat treatment 30KHGT Steel 18HGT, 20KHN2M, 25KHGT, 12KH2N4A Limited weldability. Recommended heating and subsequent heat treatment 33KHS   Hard-welded 38KHS 40HS Steel: 40HS, 38KHS, 35ХГТ Hard-welded 15KHF Steel: 20ХФ Welded without restriction (method CCC) 40KHFA Steel: 40CR, 65G, 50KHFA, 30KH3MF Difficult weldability. Requires heating and subsequent heat treatment. 15KHM   Welded without any restrictions. Recommended heating and subsequent heat treatment 30KHM 30KHMA Steel: 35KHM, 35ХРА Limited weldability. Recommended heating and subsequent heat treatment 35KHM Steel: 40CR, 40KHN, 30ХН, 35HGSA ---«--- 38ХН   ---«--- 20KHN Steel: 15ХГ, 20KHNR, 18HGT Limited weldability. 40KHN Steel: 45KHN, 50KHN, 38KHGN, 40H, 35ХГФ, 40ХНР, 40ХНМ, 30ХГВТ Difficult weldability. Recommended heating and subsequent heat treatment 45KHN Steel: 40KHN ---«--- 50KHN Steel: 40KHN, 60ХГ Does not apply to welded structures 20KHNR Steel: 20KHN Limited weldability. Requires heating and subsequent heat treatment. 12KHN2 Steel: 20khnr, 20KHGNR, 12KHN3A, 18HGT, 20KHGR ---«--- 12KHN3A Steel: 12KHN2, 20KHN3A, 25KHGT, 12Х2НА, 20KHNR ---«--- 20KHN3A Steel: 20KHGNR, 20ХНГ, 38KHA, 20KHGR ---«--- 12KH2N4A Steel: 20KHGNR, 12KHN2, 20KHGR, 12KHN3A, 20KH2N4A ---«--- 20KH2N4A Steel: 20KHGNR, 20KHGNTR Limited weldability. Requires heating and subsequent heat treatment. 30KHN3A Steel: 30Х2ГН2, 34ХН2М ---«--- 20KHGSA Steel 30KHGSA Welded without any restrictions 25KHGSA Steel: 20KHGSA Welded without any restrictions 30KHGS, 30KHN2MA Steel: 40KHFA, 35KHM, 40KHN, 35HGSA Limited weldability. Requires heating and subsequent heat treatment. 38KH2N2MA   Not used for welding work 40KHN2MA Steel: 40ХГТ, 40ХГР, 30KH3MF, 45KHN2MFA Difficult weldability. Necessary preheating and subsequent heat treatment 40Х2Н2МА Steel: 38KH2N2MA ---«--- 38KHN3MA Steel: 38KHN3VA Does not apply to welded structures 18KH2N4MA Steel: 20KH2N4A Difficult weldability. Necessary preheating and subsequent heat treatment 30KHGSA Steel: 40KHFA, 35KHM, 40KHN, 25KHGSA, 35HGSA ---«--- 35HGSA Steel: 30KHGS, 30KHGSA, 30KHGT, 35KHM ---«--- 30KHGSN2A   ---«--- 38KHGN Steel: 38KHGNM ---«--- 20KHGNR Steel: 20KHN3A ---«--- 20KHN2M Steel: 20KHGR, 15ХР, 20KHNR, 20KHGNR ---«--- 30KHN2MFA Steel: 30KHN2VFA ---«--- 36KH2N2MFA   Difficult weldability. 38KHN3MFA   Does not apply to welded structures 45KHN2MFA   Difficult weldability. Necessary preheating and subsequent heat treatment 20KHN4FA Steel: 18KH2N4MA Does not apply to welded structures 38H2MYUA Steel: 38Х2ЮА, 38ХВФЮ, 38Х2Ю, 20KH3MVF Does not apply to welded structures GOST 5520−79 16K 18K   Welded without any restrictions 20K   Welded without any restrictions 22K   Limited weldability. Recommended heating and subsequent heat treatment GOST 5632−72 40KH9S2   Does not apply to welded structures 40KH10S2M   Difficult weldability. Necessary preheating and subsequent heat treatment 08KH13 12H13 20X13 25KH13N2 Steel: 12H13, 12X18H9T Steel: 20X13 Steel: 12H13, 14KH17N2 Limited weldability. Preheating and heat treatment are applied depending on the method of welding, type and purpose of structures 30X13 40X13   Does not apply to welded structures 10Х14АГ16 Steel: 12H18N9, 08H18N10, 12KH18N9T, 12KH18N10T Welded without any restrictions 12X17 Steel 12X18H9T Not recommended for welded structures. Hard-welded 08KH17T, 08KH18T1 Steel: 12X17, 08KH18T1, 08KH17T Limited weldability 95X18   Does not apply to welded structures 15KH25T Steel: 12KH18N10T Difficult weldability. Necessary preheating and subsequent heat treatment 15KH28 Steel 15KH25T, 20H23N18 ---«--- 20Х23Н13   Limited weldability 20H23N18 Steel: 10Х25Т, 20Х23Н13 ---«--- 10Х23Н10   Limited weldability 20Х25Н20С   ---«--- 15KH12VNMF   Hard-welded 20KH12VNMF Steel: 15KH12VNMF, 18KH11MNFB ---«--- 37Х12Н8Г2МФБ   Limited weldability 13KH11N2V2MF   ---«--- 45KH14N14V2M   Hard-welded 40KH15N7G7F2MS   ---«--- 08Х17Н13М21 Steel: 10Х17Н13М21 Good weldability 10Х17Н3М2Т   ---«--- 31KH19N9MVBT   Hard-welded 10KH14G14N4T Steel: 20KH13N4G9, 12KH18N9T, 12KH18N10T, 08KH18N10T Welded satisfactorily 14KH17N2 Steel: 20KH17N2 Good weldability 12KH18N9 17H18N9 Steel: 20KH13N4G9, 10KH14G14N4T, 20KH13N4G9 Welded without any restrictions 08X18H10 08KH18N10T 12X18H9T 12KH18N10T Steel: 12KH18N10T, Steel 15KH25T, 08KH18G8N2T, 10KH14G14N4T, 08KH17T Welded without any restrictions 12Х18Н12Т Steel: 12H18N9, 12KH18N9T, 12KH18N10T Partially welded 08KH18G8N2T Steel: 12H18N9 Welded without any restrictions 20KH20N14S2   ---«--- 12H25N16G7AR   ---«--- 08KH22N6T Steel 12KH18N9T, 12KH18N10T, 08KH18N10T Welded without any restrictions 06HN28MDT Alloy: 03KHN28MDT ---«--- HN35VT   Hard-welded KHN35VTJU   Hard-welded KHN70JU   Partially welded KHN70VMJUT   Hard-welded KHN70VMTJUF   ---«--- HN77TYUR   Hard-welded KHN78T Alloy: ХН38Т, Steel: 12H25N16G7AR, 20H23N18 ---«--- KHN80TBJU   Hard-welded GOST 5781−82 20KHG2C   Welded without any restrictions 35GS 25G2S Steel: St5sp, Ст6, St5ps Welded without any restrictions GOST 5950−73 ХВ4Ф   Does not apply to welded structures 9KH1 Steel: 9x2 ---«--- 9KHS Steel: CVH ---«--- CVH Steel: 9KHS, 9KHVG, SHKH15SG ---«--- 9KHVG Steel: CVH Does not apply to welded structures KH6VF Steel: KH12F1, X12M, 9Х5Ф ---«--- X12, KH12VMF Steel KH12MF ---«--- KH12MF KH12F1 Steel: KH6VF, KH12F1, KH12VMF Steel: KH6VF, Х6ВФМ ---«--- 7KHG2VMF   Does not apply to welded structures 7X3 8X3 Steel: 8X3 Steel: 7X3 ---«--- 5KHNM Steel: 5KHNV, 5ХГМ, 4KHMFS, 5KHNVS, 4KH5V2FS ---«--- 5ХГМ Steel: 5KHNM, 5KHNV, 6ХВС, 5ХНС, 5ХНСВ ---«--- 4ЗМФС   Does not apply to welded structures 4H5MFS   ---«--- 4ХМФ1С   ---«--- 3Х3МХФ   ---«--- 6KHS   Does not apply to welded structures 4ХВ2С Steel: 4KH5V2FS, 4Х3В2М2 ---«--- 5KHV2SF 6KHV2S Steel: 6KHV2S Steel: 6ХЗФС ---«--- 6KHVG   ---«--- GOST 9045−80 08JU   Welded without any restrictions GOST 14959−79 65 70 Steel: 60, 70 65G Does not apply to welded structures 75 Steel: 70, 80, 85 ---«--- 85 Steel: 70, 75, 80 ---«--- 60G Steel: 65G ---«--- 65G Steel: 70, U8A, 70G, 60S2A, 9KHS, 50KHFA, 60S2, 55S2 Does not apply to welded structures 55S2 Steel: 50С2, 60S2, 35Х2АФ ---«--- 60S2 60S2A Steel: 55S2, 50KHFA, 60S2N2A, 60S2G, 50KHFA ---«--- 70S3A   ---«--- 55KHGR   Does not apply to welded structures 50KHFA Steel 60S2A, 50KHGFA, 9KHS ---«--- 60S2KHA Steel: 60S2KHFA, 60S2N2A ---«--- 60S2KHFA Steel 60S2A, 60S2KHA, 9KHS, 60С2ВА ---«--- 65S2VA Steel 60S2A, 60S2KHA Does not apply to welded structures 60S2N2A Steel 60S2A, 60S2KHA ---«--- GOST 19265−73 R18   When butt welding with steel 45 and 40CR good weldability R6M5K5   ---«--- R9M4K8   ---«--- GOST 19281−89 09Г2 Steel 09G2S, 10G2 Welded without any restrictions 14G2 Steel: 15KHSND Limited weldability 12GS Steel: 15ГС Welded without any restrictions 16GS Steel: 17GS ---«--- 17GS Steel: 16GS ---«--- 17G1S Steel: 17GS ---«--- 09G2S Steel: 10Г2С, 09Г2 Welded without any restrictions 10G2S1 Steel: 10G2S1D ---«--- 10G2BD Steel: 10G2B ---«--- 15G2SFD   ---«--- 14G2AF Steel 16G2AF Welded without any restrictions 16G2AF Steel 14G2AF ---«--- 18Г2ФАпс Steel: 15Г2ФАДпс, 16G2AF, 10KHSND, 15KHSND ---«--- 14KHGS Steel: 15KHSND, 16GS ---«--- 15Г2АФДпс Steel 16G2AF, 18Г2АФпс, 10KHSND Welded without any restrictions 10KHSND Steel 16G2AF ---«--- 10KHNDP   ---«--- 15KHSND Steel 16G2AF, 14KHGS, 16GS ---«--- GOST 20072−72 12MKH   Welded without any restrictions. Recommended heating and subsequent heat treatment 12KH1MF   ---«--- 25KH1MF   Welded without any restrictions. Recommended heating and subsequent heat treatment 20KH3MVF   ---«--- 15X5M   ---«---

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