Steel 15KH12VNMF (ЭИ802)
Steel 1Х14Н14В2М (ЭИ257)
Steel 13Х15Н4АМ3 (EP310; VNS-5)
Steel 15X11MF (1X11MF)
Steel 15Х12ВНМФ (ЭИ802)
Steel 15Х12Н2МВФАБ (EP517)
Steel 15Х16К5Н2МВФАБ (EP866; VNS-30)
Steel 16Х11Н2В2МФ (ЭИ962А)
Steel 16Х12ВМСФ5Р
Steel 16X12MVSFBR (EP823)
18X11MNFB steel (EP291)
Steel 18Х12ВМБФР (ЭИ993)
Steel 18Х14Н4АМ3 (VNS-43)
18Kh15N3M steel (DI1)
Steel 13Х11Н2В2МФ (ЭИ961; ВНС-33)
Steel 20X12VNMF (EP428; 20X12VNMF-S (EP427-S))
Steel 25Х13Н2ВМФ (EP65; 2Х13НВМФ)
Steel 25Х18Н10В2 (EP610)
Steel 25Х18Н8В2 (ЭИ946)
Steel 31Х19Н9МВБТ (ЭИ572)
Steel 37Х12Н8Г8МФБ (ЭИ481)
Steel 40Х15Н7Г7Ф2МС (ЭИ388)
Steel 42Х11М3Ф (EP890)
Steel 45Х14Н14В2М (ЭИ69)
Steel 45Х14Н14СВ2М (ЭИ240)
Steel X12H20T2P (EI696A)
X14H8M2 steel (EP509)
Cr18N13C2AMVF5P steel
Steel 09Х14Н19В2БР1 (ЭИ726)
Steel 01X19Yu3Bch (EP904; 02X18Yu3B)
Steel 04Х15Н11С3МТ
Steel 06X14H5MF
Steel 06Х16Н15М3Б (ЭИ847; 06Х16Н15М3Б)
06X16H15M3K steel
Steel 07Х25Н16АГЦ (EP781)
Steel 08X14MF
Steel 08Х15Н24В4ТР (EP164)
Steel 08Х15Н25М3ТЮБ
Steel 08Х15Н5Д2Т (EP410; VNS-2; EP225)
Steel 08Х16Н13М2Б (ЭИ680)
Steel 09X14H16B (EI694)
Steel 09X14H19V2BR (EI695R)
Steel 13Х14Н3В2ФР (ЭИ736; 513Л)
Steel 09Х16Н13М3 (ЭИ592)
Steel 09Х16Н15М3Б
Steel 09Х16Н16МВ2БР (ЭП184; Х16Н16МВ2БР)
Steel 09Х16Н7М2Ю (ЗИ65)
10GN2MFA steel
Steel 10Х11Н20Т3Р (ЭИ696)
Steel 10Х11Н23Т3МР (ЭП33; ЭЦ696)
Steel 10Х12Н22Т3МРУ (EP33U)
Steel 10Х15Н28В2М4Б (EP485)
Steel 10Х15Н9С3Б1 (EP302)
10Х9НСМФБ steel
Steel 11Х11Н2В2МФ (ЭИ962)
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 15Х12ВНМФ |
| Designation GOST Latin | 15X12BHMF |
| Transliteration | 15H12VNMF |
| The chemical elements | 15Cr12WНMoV |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ЭИ802 |
| Designation GOST Latin | EI802 |
| Transliteration | EhI802 |
| The chemical elements | - |
Description
15KH12VNMF steel is used: for the manufacture of steam turbine blades operating at temperatures up to +580 °C; rotors, disks, blades, bolts, bands, nuts, pins and other parts operating at temperatures up to +780 °C.
Note
Steel high-temperature martensite-ferritic class.
The recommended maximum operating temperature for a long time — up to 780 °C. the Temperature of beginning of intensive scaling in air +950 °C.
Standards
| Name | Code | Standards |
|---|---|---|
| Sheets and stripes | В23 | GOST 103-2006 |
| Sectional and shaped rolling | В22 | GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006 |
| Sheets and stripes | В33 | GOST 4405-75 |
| Classification, nomenclature and general norms | В30 | GOST 5632-72 |
| Sectional and shaped rolling | В32 | GOST 5949-75, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 18968-73, GOST 19442-74, TU 14-11-245-88 |
| Bulls. Blanks. Slabs | В31 | OST 108.020.03-82, OST 3-1686-90 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | V | Ti | Mo | W |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 5632-72 | 0.12-0.18 | ≤0.025 | ≤0.03 | 0.5-0.9 | 11-13 | ≤0.4 | 0.4-0.8 | The rest | ≤0.3 | 0.15-0.3 | ≤0.2 | 0.5-0.7 | 0.7-1.1 |
Fe is the basis.
Mechanical characteristics
| Section, mm | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa |
|---|---|---|---|---|---|---|
| Bars and strip hot rolled and forged GOST 18968-73. Normalization or quenching at 1010-1060 °C, cooling in oil + Leave in 660-770 °C, air cooling | ||||||
| 590-735 | ≥740 | ≥15 | ≥50 | ≥588 | 229-269 | |
| Disc diameter 750-1020 mm, height 300 mm. Forging rotor diameter 1140 mm. Quenching in oil from 1050 °C to + Vacation at 720 °C (sample tangential). At 20 °C NV=228-248 | ||||||
| - | 600-650 | 750-810 | 14-23 | 41-55 | - | - |
| Disk with a diameter of 700 mm, a height of 300 mm (indicated temperature and time of heat exposure) | ||||||
| - | ≥600 | ≥790 | ≥21 | ≥57 | - | ≥241 |
| Bars hot rolled and forged according to GOST 5949-75. Annealing at 900-950 °C, cooling in furnace + Quenching in oil from 1000-1020 °C + Vacation at 600-700 °C, air cooling | ||||||
| ≥590 | ≥740 | ≥15 | ≥45 | ≥588 | - | |
| Disc diameter 750-1020 mm, height 300 mm. Forging rotor diameter 1140 mm. Quenching in oil from 1050 °C to + Vacation at 720 °C (sample tangential). At 20 °C NV=228-248 | ||||||
| - | 580-610 | 720-760 | 16-18 | 45-53 | - | - |
| Disk with a diameter of 700 mm, a height of 300 mm (indicated temperature and time of heat exposure) | ||||||
| - | ≥580 | ≥750 | ≥21 | ≥49 | - | ≥241 |
| Rolled steel. Quenching in oil from 1050 °C + Vacation at 740 °C, air cooling | ||||||
| ≤60 | ≥510 | ≥690 | ≥18 | ≥57 | ≥686 | - |
| Disc diameter 750-1020 mm, height 300 mm. Forging rotor diameter 1140 mm. Quenching in oil from 1050 °C to + Vacation at 720 °C (sample tangential). At 20 °C NV=228-248 | ||||||
| - | 540-570 | 690-710 | 13-17 | 37-54 | - | - |
| The forging of a rotor with a diameter of 1000 mm (provided the temperature and time of heat exposure) | ||||||
| - | ≥660 | ≥810 | ≥17 | ≥44 | - | ≥262 |
| Contoured rods (g/K, x/K and x/t for steam turbine blades; x/a and x/t for coupling blades of steam turbines) according to GOST 19442-74. Quenching in oil with 1010-1060 °C to + Leave in 660-770 °C, air cooling (specified strength) | ||||||
| 588-735 | 735-931 | ≥15 | ≥50 | ≥588 | 229-269 | |
| Disc diameter 750-1020 mm, height 300 mm. Forging rotor diameter 1140 mm. Quenching in oil from 1050 °C to + Vacation at 720 °C (sample tangential). At 20 °C NV=228-248 | ||||||
| - | 520-540 | 640-680 | 13-17 | 46-51 | - | - |
| The forging of a rotor with a diameter of 1000 mm (provided the temperature and time of heat exposure) | ||||||
| - | ≥630 | ≥780 | ≥14 | ≥42 | - | ≥255 |
| Disc diameter 750-1020 mm, height 300 mm. Forging rotor diameter 1140 mm. Quenching in oil from 1050 °C to + Vacation at 720 °C (sample tangential). At 20 °C NV=228-248 | ||||||
| - | 500-510 | 610-630 | - | 45-51 | - | - |
| The forging of a rotor with a diameter of 1000 mm (provided the temperature and time of heat exposure) | ||||||
| - | ≥480 | ≥660 | ≥21 | ≥40 | - | ≥207 |
| Disc diameter 750-1020 mm, height 300 mm. Forging rotor diameter 1140 mm. Quenching in oil from 1050 °C to + Vacation at 720 °C (sample tangential). At 20 °C NV=228-248 | ||||||
| - | 440-460 | 510-530 | 15-19 | 52-61 | - | - |
| The forging of a rotor with a diameter of 1000 mm (provided the temperature and time of heat exposure) | ||||||
| - | ≥440 | ≥630 | ≥26 | ≥51 | - | ≥196 |
| Disc diameter 750-1020 mm, height 300 mm. Forging rotor diameter 1140 mm. Quenching in oil from 1050 °C to + Vacation at 720 °C (sample tangential). At 20 °C NV=228-248 | ||||||
| - | 330-350 | 340-360 | 21-31 | 83-85 | - | - |
| Bars with a diameter of 40-120 mm. Quenching in oil from 1050 °C to + Vacation at 700 °C. At 20 °C NV=255-271 | ||||||
| - | 700-730 | 830-870 | 15-18 | 55-59 | - | - |
| - | 600-620 | 720-730 | 14-15 | 59-63 | - | - |
| - | 570-590 | 670-680 | 13-14 | 55-62 | - | - |
| - | 520-570 | 550-570 | 14-15 | 59-78 | - | - |
| - | 455-470 | 500-520 | 18-19 | 78-79 | - | - |
| - | 350-370 | 370-395 | 20-23 | 79-88 | - | - |
| - | 275-315 | 295-340 | 26 | 87 | - | - |
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 | r, кг/м3 | l, Вт/(м · °С) | a, 10-6 1/°С | С, Дж/(кг · °С) |
|---|---|---|---|---|---|
| 0 | 212 | 7850 | - | - | - |
| 20 | 216 | 7850 | - | - | - |
| 100 | 207 | 7830 | 25 | 105 | 477 |
| 200 | 202 | 7800 | 25 | 108 | 498 |
| 300 | 196 | 7780 | 26 | 111 | 545 |
| 400 | 190 | 7760 | 26 | 114 | 625 |
| 500 | 181 | 7730 | 27 | 116 | 741 |
| 600 | 167 | 7700 | 27 | 118 | 896 |
| 700 | - | 7670 | 272 | 119 | - |
| 800 | - | - | 276 | 12 | - |
| 1000 | - | - | - | 107 | - |
| 1200 | - | - | - | 116 | - |
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 | difficult weldability. For welding use electrode KTN-10, to welding full heat treatment after welding - vacation at 700 °C for 5 h or at 680 °C for 10 h, cooling with the furnace. |
| Forging temperature | Start - 1230 °C, the end of - 900 °C. the cross Sections up to 250 mm is subjected to annealing, one hypothermia. Sections from 250 to 400 mm - annealing and two hypothermia. |
| Workability by cutting | when HB 230 Kn TV.SPL.=1.1 Kn b.St.=0.5. |
