Steel 12DN2FL
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 | 12ДН2ФЛ |
| Designation GOST Latin | 12DH2FL |
| Transliteration | 12DN2FL |
| The chemical elements | 12CuН2V |
Description
12DN2FL steel is used: for the manufacture of litho-and combined welded structures and castings for critical loaded parts, which are requirements of high strength and toughness, working under static and dynamic loads at temperatures up to +400 °C.
Standards
| Name | Code | Standards |
|---|---|---|
| Castings, steel | В82 | GOST 977-88, OST 3-4365-79 |
Chemical composition
| Standard | C | S | P | Mn | Si | Ni | Fe | Cu | V |
|---|---|---|---|---|---|---|---|---|---|
| GOST 977-88 | 0.08-0.16 | ≤0.035 | ≤0.035 | 0.4-0.9 | 0.2-0.4 | 1.8-2.2 | The rest | 1.2-1.5 | 0.08-0.15 |
Fe is the basis.
Mechanical characteristics
| Section, mm | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa |
|---|---|---|---|---|---|---|
| Normalization at 910-930 °C + vacation at 530-560 °C, air cooling | ||||||
| 100 | ≥540 | ≥638 | ≥12 | ≥20 | ≥294 | 170-229 |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling (named place of clippings sample) | ||||||
| 100 | 500-510 | 600-630 | 23-26 | 46-54 | - | - |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling | ||||||
| - | 460-500 | 580-620 | 19-24 | 49-64 | - | - |
| Normalization at 940-950 °C + tempering air with 890-910 °C + vacation at 560-600 °C, air cooling | ||||||
| 100 | ≥638 | ≥785 | ≥12 | ≥25 | ≥392 | - |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling (named place of clippings sample) | ||||||
| 100 | 500-510 | 620-640 | 23-27 | 48-64 | - | 187-206 |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling | ||||||
| - | 415-470 | 540-500 | 8-18 | 28-58 | - | - |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling (named place of clippings sample) | ||||||
| 200 | 490-510 | 500-610 | 11-16 | 19-36 | - | 196-206 |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling | ||||||
| - | 410-450 | 500-600 | 11-18 | 19-53 | - | - |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling (named place of clippings sample) | ||||||
| 200 | 500-520 | 570-640 | 9-24 | 21-54 | - | 196-206 |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling | ||||||
| - | 380-410 | 500-550 | 13-20 | 30-51 | - | - |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling (named place of clippings sample) | ||||||
| 30 | 490-540 | 630-660 | 21-27 | 55-64 | - | 187-196 |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling | ||||||
| - | 315-355 | 390-420 | 15-21 | 37-53 | - | - |
| Normalization at 920-930 °C (maintained for 5 h), air cooling + vacation at 520-530 °C (exposure 6 h), cooled with the furnace for 1 h, air cooling (named place of clippings sample) | ||||||
| 50 | 510-550 | 610-670 | 25-26 | 49-62 | - | 187-196 |
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 |
| d5 | Elongation after rupture |
| y | The relative narrowing |
| kJ/m2 | Toughness |
Physical characteristics
| Temperature | Е, ГПа | G, ГПа | r, кг/м3 | l, Вт/(м · °С) | R, НОм · м | a, 10-6 1/°С | С, Дж/(кг · °С) |
|---|---|---|---|---|---|---|---|
| 0 | 211 | 82 | 7860 | 37 | 210 | - | - |
| 20 | 211 | - | 7860 | 37 | 210 | - | - |
| 100 | 206 | 80 | - | 38 | 268 | 115 | 487 |
| 200 | 196 | 76 | - | 38 | 339 | 123 | 504 |
| 300 | 189 | 74 | - | 38 | 426 | 129 | 517 |
| 400 | 181 | 70 | - | 37 | 545 | 131 | 529 |
| 500 | 174 | 67 | - | 34 | 641 | 137 | 559 |
| 600 | 155 | 59 | - | 32 | 787 | 142 | 575 |
| 700 | 135 | 51 | - | 29 | 939 | 141 | 617 |
| 800 | 127 | 48 | - | 27 | 1109 | 108 | 689 |
| 900 | - | - | - | 27 | 1158 | 108 | 689 |
| 1100 | - | - | - | - | - | 126 | 685 |
A description of the physical symbols
| Name | Description |
|---|---|
| Е | The normal elasticity modulus |
| r | Density |
| l | Coefficient of thermal conductivity |
| R | UD. the resistivity |
Technological properties
| Name | The value |
|---|---|
| Weldability | well welded RDS |
