Steel 20GSL
36CrNrL steel
Steel 40G1
Steel 35KhNML
Steel 35KhNL
Steel 35KhN2ML
Steel 35KhN2VL
Steel 35KhML
Steel 35KhGFL (35KhGF)
Steel 35KhGSL
35KhGL steel
Steel 35NGML
Steel 35GTRL
Steel 35GL
Steel 32X06L
30KhNML steel
30KhML steel
30XL steel
30ХГФРЛ steel
Steel 30ХГСФРЛ
30KhGSFL steel
30KhG1 steel
Steel 30Х3С3ГМЛ
30GSL steel
30GL steel
Steel 5MFRL
X8ML steel
X15L steel
KPL steel
VKL-5 steel
Steel 80GSL
Steel 75KhNMFL
Steel 70X2GL
70GL steel
Steel 60KhGL
5KhNML steel
Steel 5FL
Steel 28X11ML
Steel 55SL
50KhGL steel
Steel 45FL
45GL steel
40KhFL steel
40KhNL steel
40KhN2L steel
40KhML steel
40KhL steel
40KhGRL steel
40GTL steel
Steel 12Х2НМЛ (VKL-3М)
20GL steel
16KhGTL steel
Steel 16Х3МФЛ
15XL steel
15KhGSML steel
Steel 15Х1М1ФЛ
15GNFL steel
15GNL steel
15GL steel
Steel 13KhNDFTL
Steel 12Х7Г3СЛ
20GML steel
Steel 12Х2НВМЛ (VKL-3)
Steel 12DKhN1MFL
Steel 12DN2FL
08TL steel
Steel 08N6G4ML
08GNFL steel
08GNL steel
Steel 08GDNL (SL-30)
08G2FL steel
Steel 03N12H5M3TUL
Steel 03N12H5M3TL
20XL steel
Steel 25KhGSL
Steel 25KhGL
Steel 25Х2ГНМФЛ
Steel 25GSL
Steel 23ХГСС2МФЛ
Steel 23GNMFL
20KhNFL steel
20KhNL steel
20XHN3L steel
20KhMFL steel
20KhML steel
Steel 27Х5GSML
20KhGSL steel
Steel 20Х3МВФЛ (ЭИ415Л)
20FL steel
20DHL steel
20GFL steel (20G1FL)
20GTL steel
20GSL steel
20GNFL steel
20GNMYL steel
20GNMFL steel
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 20ГСЛ |
| Designation GOST Latin | 20GCL |
| Transliteration | 20GSL |
| The chemical elements | 20MnС |
Description
20GSL steel is used: for the manufacture of castings parts, high tensile strength; basic parts of hydraulic turbines, operating at temperatures up to +450 °C; casting parts for gas turbines and axial compressors operating at temperatures from -40 to +350 °C; stationary parts of steam turbines operating at temperatures up to +450 °C; casting equipment parts (valves) for nuclear power stations, heat supply stations, heat and power plants, experimental and research nuclear reactors and installations; tsentrobezhnolityh pipes used as components in equipment for metallurgical, engineering, glass, ceramic, mining and processing petrochemical industry and is intended for the manufacture of blanks and parts used in the composition of the products of aviation and the nuclear industry.
Note
Steel pearlitic class.
Standards
| Name | Code | Standards |
|---|---|---|
| Castings, steel | В82 | GOST 977-88, OST 108.961.04-80, OST 5Р.9285-95, TU 108-23.45-88, TU 108.671-84, TU 108-978-80, TU 24-1-12-181-75, TU 03.12290-95, TU 5.961-11151-92 |
| Castings with special properties (cast iron and steel) | В83 | OST 108.961.02-79, OST 108.961.03-79 |
| Welding and cutting of metals. Soldering, riveting | В05 | RTM 108.020.122-78 |
| Pipes steel and connecting parts to them | В62 | TU 1333-003-76886532-2014 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu |
|---|---|---|---|---|---|---|---|---|---|
| OST 5Р.9285-95 | 0.16-0.22 | ≤0.03 | ≤0.03 | 1-1.3 | ≤0.3 | 0.6-0.8 | ≤0.3 | The rest | ≤0.3 |
| TU 5.961-11151-92 | 0.16-0.22 | ≤0.03 | ≤0.03 | 1-1.3 | - | 0.6-0.8 | - | The rest | - |
| OST 108.961.03-79 | 0.16-0.22 | ≤0.025 | ≤0.025 | 1-1.3 | ≤0.3 | 0.6-0.8 | ≤0.3 | The rest | ≤0.3 |
Fe is the basis.
According to OST 5P.9285-95, the content of nickel and chromium up to 0.50%, copper to 0.40% and molybdenum to 0.12% is not a defect condition provided that the requirements of the standard are observed and if there are no specific instructions in the technical conditions of the order or drawing .
According to TU 5.961-11151-92 for castings of grades 1 and 2 the mass fraction of cobalt in steel should not exceed 0.20%, and for castings in the direct irradiation zone - 0.15%.
According to OST 5P.9285-95, the content of nickel and chromium up to 0.50%, copper to 0.40% and molybdenum to 0.12% is not a defect condition provided that the requirements of the standard are observed and if there are no specific instructions in the technical conditions of the order or drawing .
According to TU 5.961-11151-92 for castings of grades 1 and 2 the mass fraction of cobalt in steel should not exceed 0.20%, and for castings in the direct irradiation zone - 0.15%.
Mechanical characteristics
| Section, mm | sT|s0,2, MPa | σB, MPa | d | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa |
|---|---|---|---|---|---|---|
| Casting parts of gas turbines. Normalization when 890-930 °C, air cooling + Vacation at 630-660 °C, air cooling | ||||||
| - | ≥275 | ≥490 | ≥18 | ≥30 | ≥390 | 124-151 |
| Casting of body parts stationary steam turbines. Normalization at 880-930 °C + vacation at 630-660 °C, air cooling | ||||||
| - | ≥230 | - | - | - | - | - |
| Castings for shipbuilding. Normalization at 900-950 °C + Vacation at 570-600 °C, air cooling | ||||||
| - | ≥300 | ≥550 | ≥18 | ≥30 | ≥300 | 149-197 |
| Casting of body parts stationary steam turbines. Normalization at 880-930 °C + vacation at 630-660 °C, air cooling | ||||||
| - | ≥200 | - | - | - | - | - |
| - | ≥280 | ≥500 | ≥18 | ≥30 | ≥294 | - |
| - | ≥180 | - | - | - | - | - |
| Casting. Normalization at 870-890 °C + vacation at 570-600 °C, air cooling | ||||||
| 100 | ≥294 | ≥540 | ≥18 | ≥30 | ≥294 | - |
| Casting of body parts stationary steam turbines. Normalization at 880-930 °C + vacation at 630-660 °C, air cooling | ||||||
| - | ≥170 | - | - | - | - | - |
| Castings with wall thickness up to 100 mm in the delivery state on the other 5.961-11151-92. Normalization at 870-890 °C + Vacation at 570-600 °C. the Critical temperature of brittleness of TKO ≤ 50 °C. | ||||||
| - | ≥294 | ≥540 | ≥18 | ≥30 | ≥392 | - |
| - | ≥260 | ≥480 | - | ≥22 | - | - |
| - | ≥240 | ≥460 | - | ≥20 | - | - |
| - | ≥220 | ≥440 | - | ≥20 | - | - |
Description mechanical marks
| Name | Description |
|---|---|
| Section | Section |
| 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 |
|---|---|
| Weldability | Satisfactory weldability. |
| Defect welding | Welding defects of castings after cutting is usually carried out without heating. By semiautomatic welding in carbon dioxide environment used welding wire SV-08G2S diameter of 2 mm at a current of 380-420 A. Welding defects by manual welding is done with electrodes type e-50A (GOST 9467) brand SSSI-13/55. When welding the hard contour and the large sample volume required pre-heating to 200-250 °C. After welding and repair of defects by welding is used vacation at 570-600 °C. |
