Steel 07Х20Н25М3Д2ТЛ
Steel 03Х12Н5М6К13Л (VNL-8)
Steel 05X18AN5FL
Steel 05X18AN6M2FL
Steel 06Х12Н3ДЛ
Steel 06Х17Н10Г2С2Л (VNL-12)
Steel 07X17H16TL
Steel 07Х18Н10Г2С2М2Л
Steel 07Х18Н9Л (5Х18Н9Л)
Steel 07Х20Н25М3Д2ТL
Steel 07Х21Н9С2М (VNL-4)
Steel 07Х24Н8М2Д3Л (VKL-1)
07KhN25MDTL steel
Steel 08G2DNFL
Steel 08Х12Н4ГСМЛ
08Cr13HdL steel
Steel 08X13L (EI496L)
Steel 08Х14Н5М2ДЛ (VNL-3)
Steel 08Х14Н7МЛ (VNL-1; 5Х14Н7МЛ)
Steel 08X14NDL
Steel 08Х15Н4ДМЛ
Steel 08Х17Н34В5Т3Ю2Л (5Х17Н34В5Т3У2Л)
Steel 08Х17Н34В5Т3Ю2РЛ
Steel 09Х16Н4БЛ (10Х16Н4БЛ)
Steel 09X17H3SL (10X17H3SL)
Steel 10Х12НДЛ (0Х12НДЛ)
Steel 10Х14Н5М2Л (VNL-2)
Steel 10X14NDL (5X14NDL)
Steel 10Х17Н10Г4МБЛ (ЭИ402МЛ; 10Х17Н10Г4МБЛС)
Steel 10Х17Н13Г4Д2ТЛ (0Х17Н13Г4Д2ТЛ)
Steel 10Х18Н11БЛ (5Х18Н11БЛ)
Steel 10Х18Н12М3Л
Steel 10Х18Н3Г3Д2Л (0Х18Н3Г3Д2Л)
Steel 10Х18Н9БЛ (Х18Н9БЛ)
10X18H9L steel
Steel 10Х21Н6М2Л
Steel 10Х28Н6М3АL
110G10L steel
Steel 110G13L (G13L)
Steel 110G13FTL
Steel 110G13H2BRL
Steel 110Г13ХБРЛ
Steel 110Г13ХНЛ
110G8L steel
Steel 120G10FL
Steel 120Г13Х2БЛ
Steel 12МХЛ (12ХМЛ)
Steel 12H2DML
Steel 12Х13Н3М2Л (VNL-9)
Steel 12Х16Н8М2БЛ (VNL-11)
Steel 12Х18Н12БЛ (10Х18Н12БЛ)
Steel 12Х18Н12М3ТL
Steel 12Х18Н6ФАЛ
Steel 12X18H7M2FAL
Steel 12Х18Н9ТL (10Х18Н9ТL)
Steel 12Х19Н7Г2САЛ
Steel 12Х21Н5Г2САЛ
Steel 12Х21Н5Г2СЛ
Steel 12Х21Н5Г2СМ2Л
Steel 12Х21Н5Г2СТЛ
Steel 12Х25Н5ТМФЛ (10Х25Н5ТМФЛ)
12ХГФЛ steel
Steel 130Г14ХМФАЛ
Steel 13NDFTL
Steel 13Х11Н5М5Л (VNL-5)
Steel 14Х18Н4Г4Л (10Х18Н4Г4Л)
Steel 14Х2ГМРЛ
15DNML steel
Steel 15Х11МФБЛ
Steel 15X13L (10X13L)
15X14NL steel
Steel 15Х18Н10Г2С2М2Л
Steel 15Х18Н10Г2С2М2ТЛ
15X18H10L steel
Steel 15Х18Н12С4Л
Steel 15Х18Н22В6М2Л
Steel 15Х18Н22В6М2РЛ
15Х23Н18Л steel
15X25TL steel
16GDNML steel
Steel 16Х18Н12С4ТЛ (ЭИ654ЛК)
Steel 18Kh12NMVFL
Steel 18Х25Н19СЛ (15Х25Н19СЛ)
20GSNML steel
Steel 20H3DML
20FTL steel
Steel 20X12VNMFL
20X13L steel
Steel 20Х20Н14С2Л
Steel 20Х21Н46В8Л
Steel 20Х21Н46В8РЛ
Steel 20Х25Н19С2Л (15Х25Н19С2Л)
Steel 20X5ML
Steel 20X5TL
Steel 20X8VL
20KhGSNML steel
Steel 20ХГСФЛ
Steel 25NL
Steel 25Х2НМЛ
Steel 27KhGSNMDTL (27KhGSNMDTLA)
Steel 27ХГСНМЛ
Steel 27ХН2МФЛ
Steel 30Х16Н22В6БЛ (ЦЖ-13Л)
Steel 30Х24Н10АТС2Л
Steel 30Х28Н6М2Л
Steel 30KhG2STL
Steel 31Х19Н9МВБТЛ (ЭИ572Л; 30Х19НМВБТЛ)
Steel 35Х18Н24С2Л (30Х18Н24С2Л)
Steel 35X23H7SL (25X23H7SL)
Steel 35KhMFL
Steel 40Г17ХН2 (ММЛ-1)
40X17SL steel (GX40CrSi17)
Steel 40Х24Н12СЛ (30Х24Н12СЛ)
Steel 40X27H4SL (GX40CrNiSi27-4)
Steel 40X29SL (GX40CrSi29)
Steel 40Kh9S2L
Steel 45G17NMF (MML-3)
Steel 45G18H2TUL
Steel 45Cr17H13Ni3YuL
Steel 4Х4Н5МК (VKL-4М)
Steel 50X24H12SAL
Steel 55Х18Г14С2ТL
Steel 60G17HN2F (MML-2)
Steel 60X16G13TL
70XL steel
Steel 85X4M5F2V6L (R6M5L)
Steel 90G14Yu2
Steel 90X28MFTAL
Steel 90X4M4F2V6L (R6M4F2L)
95X18M steel (VNL-13)
Alloy ANV-300
Alloy VZhL8
G13Cr2L steel
G13HL steel
X23H26M3TFL steel
X23N28M3D3TL steel
X25H13ATL steel
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 07Х20Н25М3Д2ТЛ |
| Designation GOST Latin | 07X20H25M3D2TL |
| Transliteration | 07H20N25M3D2TL |
| The chemical elements | 07Cr20Н25Mo3Cu2Ti |
Description
07Х20Н25М3Д2ТЛ steel is used: for the manufacture of the 1st, 2nd and 3rd groups casting parts of valves and actuators to it operating in sulphuric and phosphoric acids of various concentrations at temperatures up to +80 °C, and in less aggressive environments when the working environment temperature from -70 to +300 °C without limitation of the rated working pressure.
Note
Casting parts of pipe fittings of steel 07Х20Н25М3Д2ТЛ demanding resistance to corrosion cracking are subjected to stabilization annealing step (Mode 2).
Standards
| Name | Code | Standards |
|---|---|---|
| Castings, steel | В82 | OST 26-07-402-83, ST ЦКБА 014-2004 |
| Welding and cutting of metals. Soldering, riveting | В05 | RD РТМ 26-07-233-79 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | Ti | Mo |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ST ЦКБА 014-2004 | ≤0.07 | ≤0.02 | ≤0.03 | ≤0.8 | 19-21 | ≤0.8 | 24-26 | The rest | 1.8-2.2 | 0.4-0.7 | 2.3-3 |
Fe is the basis.
Mechanical characteristics
| sT|s0,2, MPa | σB, MPa | d | y, % | kJ/m2, кДж/м2 |
|---|---|---|---|---|
| Casting parts of pipe fittings. Mode 1: Quenching in water from 1100-1150 °C or Mode 2: Annealing at 1100-1120 °C (exposure 1.5 h), cooling with the furnace to 950 °C (exposure 2 hours), cooled with the furnace to 300 °C, air cooling | ||||
| ≥200 | ≥400 | ≥20 | ≥20 | ≥800 |
Description mechanical marks
| Name | Description |
|---|---|
| sT|s0,2 | Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB | Limit short-term strength |
| d | Elongation after rupture |
| y | The relative narrowing |
| kJ/m2 | Toughness |
Technological properties
| Name | The value |
|---|---|
| Surfacing | For the argon arc and TIG welding of sealing and friction surfaces of parts of pipeline fittings are used electrodes and welding rods of alloy 06Х20Н10М3Д3С4Л po RD RTM 26-07-233-79. Before welding the parts must be subjected to preliminary heating in a furnace at a temperature of from +400 to +650 °C. To enhance the corrosion resistance of weld metal and relieve internal stresses after welding should be heat treatment of parts in the following mode: fit into the oven at temperatures up to +500 °C, heating from +950 to +1050 °C, exposure - 1.5 to 2 hours, cooling with the furnace. |
