Steel 38KHN3MFA (38ХН3МФ)
Steel 35KhSN3M1A (VKS-8)
Steel 30Kh2GSN2VM (30Kh2GSN2M1; VL-1)
Steel 30Kh2GSNVM (VL-1D)
Steel 30Х2Н2СВМФА (VKS-3)
Steel 30KhGSN2A (30KhGSNA)
Steel 30KhGSN2MA (30KhGSNMA)
Steel 30ХН3М1ФА (30ХН3М1Ф)
Steel 30ХН3М2ФА (30ХН3М2Ф)
Steel 32KhN8M1FK5A (VKS-6)
Steel 34KhMA (34KhM)
Steel 34KhN3MA (0KhN3M)
Steel 35KhMA (35KhMAR)
Steel 35KhN1M2FA
Steel 35KHN3MFA (35KHN3MFAR)
Steel 35ХС2Н3М1ФА (VKS-9)
Steel 28ХНН3МФА (28ХН3МФ)
Steel 36KHN3MFA (36KHN3MF)
Steel 38Kh3SNMVFA (SP38)
38KhMFYUA steel
38KhN3MFA steel (38KhN3MF)
40GMFR steel
Steel 40KhN2SVA (EI643)
Steel 40KhN2SMA (EI643M)
Steel 42Kh2GSNM (VKS-1)
43Kh3SNMVFA steel (SP43)
Steel 45Г15Н9Х2ЮФ (EP769)
45Kh3NM2FA steel
Steel АЦ28ХГН2АФБ
Steel АЦ28ХГН3ФТ
B2G steel
X11MNAFB steel
20KhGSNM steel
Steel 01N17K12M5T (EP845; VKS-240)
Steel 02N18K9M5T (EP637A; VKS-210)
Steel 03N18K8M5T (VKS-170; EK21)
Steel 03N19K6M5TR (EP631)
Steel 03Cr14H7V
Steel 08Х15Н25Т2МФР (EP674)
Steel 09Х16НМ2Д (EP887; VNS28)
Steel 120G13 (EI256)
12Kh3GNMFBA steel
Steel 15Х16Н3КАМФ2 (VNS-47; EK81)
15Kh2GMF steel
15Kh2NMFA steel
Steel 16X16H3MAD (EP811; VSN21)
Alloy 20ХГСН2МФА (DI107)
Steel 28Kh3SNMVFA (SP28; EP326A)
Steel 25Х12Н2В2М2Ф (EP311; VNS-6)
Steel 25Х20Н9В2М (EP466)
Steel 25Kh2GNTA
Steel 25Х2ГНТРА
Steel 25Х2Н4МФА
Steel 25Kh2NMF (25Kh2NMFA)
Steel 25KhGSNMA
Steel 25KhN3MFA (25KhN3MFAR)
Steel 25ХСНВФА (VP25)
Steel 26ХН3М2ФА (26ХН3М2ФАA)
Steel 26KhN3MF (26KhN3MFA)
Steel 26KhN4MF (26KhN4MFA)
Steel 27ХН3М2ФА (27ХН3М2Ф)
Steel 27ХН3МФА (27ХН3МФ)
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 38ХН3МФА |
| Designation GOST Latin | 38XH3MFA |
| Transliteration | 38HN3MFA |
| The chemical elements | 38CrН3MoV |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 38ХН3МФ |
| Designation GOST Latin | 38XH3MF |
| Transliteration | 38HN3MF |
| The chemical elements | 38CrН3MoV |
Description
38KHN3MFA steel is used: for the production of rings of turbogenerators and most critical highly loaded parts operating at temperatures up to +400 °C; heavily loaded parts of pipe fittings; forged billets for rotors of troubleproof; billet forged shafts and rotors, stationary and transport steam turbines.
Note
Structural steel high-quality hromonikelemolibdenovyh.
Standards
| Name | Code | Standards |
|---|---|---|
| Sheets and stripes | В23 | GOST 103-2006 |
| Sectional and shaped rolling | В32 | GOST 1051-73, GOST 4543-71, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008 |
| Sectional and shaped rolling | В22 | GOST 1133-71, GOST 8319.0-75, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006 |
| Metal forming. Forgings | В03 | GOST 8479-70, OST 5Р.9125-84, OST 26-01-135-81, TU 3-896-78, TU 108-1029-81, TU 108-11-910-87, TU 108-11-921-87, ST ЦКБА 010-2004, TU 108-11-342-87 |
| Bulls. Blanks. Slabs | В31 | OST 3-1686-90, TU 108-11-440-87, TU 108.11.889-87, TU 14-1-1937-77, TU 14-1-4944-90, TU 14-1-4797-90 |
| Thermal and thermochemical treatment of metals | В04 | ST ЦКБА 026-2005 |
| Sheets and stripes | В33 | TU 14-1-5036-91 |
| Cylinders made of steel | В66 | TU 14-159-257-98, TU 14-3-644-77 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | V | Ti | Mo | W |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TU 108-1029-81 | 0.34-0.42 | ≤0.022 | ≤0.025 | 0.25-0.55 | 1.2-1.5 | ≤0.37 | 3-3.4 | The rest | ≤0.25 | 0.1-0.2 | - | 0.35-0.45 | - |
| GOST 4543-71 | 0.33-0.4 | ≤0.025 | ≤0.025 | 0.25-0.5 | 1.2-1.5 | 0.17-0.37 | 3-3.5 | The rest | ≤0.3 | 0.1-0.18 | ≤0.03 | 0.35-0.45 | ≤0.2 |
Fe is the basis.
GOST 4543-71 regulates the content of high-quality steel: P≤0,025%; S≤0.015%; Сu≤0.25%.
According to TU 108.11.889-87, deviations in chemical composition are allowed: by carbon ± 0.010%, by chroma ± 0.050%, by manganese ± 0.020%, by molybdenum ± 0.020%, by vanadium ± 0.020%, by nickel -0.10% , for silicon +0.020%. The total content of sulfur and phosphorus should not be more than 0.036% for smelting by a duplex process and in an electric furnace. The sulfur and phosphorus content after the use of the out-of-furnace refining and evacuation unit (OVPV) should not be more than 0.010% and 0.012%, respectively, for a sum of sulfur and phosphorus not more than 0.020%. The steel shall be melted according to the manufacturer's technical documentation using the UVRB unit. It is allowed to melt steel in an open-hearth furnace by a duplex process or in the main electric arc furnace.
According to TU 108-1029-81 the chemical composition is given for steel grade 38HN3MFA. In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%. For metal VDP, the deviation of manganese content +0.10% / - 0.15% is allowed. The deviation of the silicon content in the metal VDP and ESR is allowed within ± 0.050%. In the ESR steel, the sulfur content should not be more than 0.015%. The total content of sulfur and phosphorus should not be more than 0.040%.
GOST 4543-71 regulates the content of high-quality steel: P≤0,025%; S≤0.015%; Сu≤0.25%.
According to TU 108.11.889-87, deviations in chemical composition are allowed: by carbon ± 0.010%, by chroma ± 0.050%, by manganese ± 0.020%, by molybdenum ± 0.020%, by vanadium ± 0.020%, by nickel -0.10% , for silicon +0.020%. The total content of sulfur and phosphorus should not be more than 0.036% for smelting by a duplex process and in an electric furnace. The sulfur and phosphorus content after the use of the out-of-furnace refining and evacuation unit (OVPV) should not be more than 0.010% and 0.012%, respectively, for a sum of sulfur and phosphorus not more than 0.020%. The steel shall be melted according to the manufacturer's technical documentation using the UVRB unit. It is allowed to melt steel in an open-hearth furnace by a duplex process or in the main electric arc furnace.
According to TU 108-1029-81 the chemical composition is given for steel grade 38HN3MFA. In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%. For metal VDP, the deviation of manganese content +0.10% / - 0.15% is allowed. The deviation of the silicon content in the metal VDP and ESR is allowed within ± 0.050%. In the ESR steel, the sulfur content should not be more than 0.015%. The total content of sulfur and phosphorus should not be more than 0.040%.
Mechanical characteristics
| Section, mm | t отпуска, °C | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa | HRC |
|---|---|---|---|---|---|---|---|---|
| Quenching in oil from 850 °C + vacation | ||||||||
| - | 200 | 1590 | 1800 | 11 | 43 | 589 | - | 52 |
| - | 300 | 1470 | 1080 | 9 | 46 | 490 | - | 48 |
| - | 400 | 1400 | 150 | 10 | 45 | 471 | - | 46 |
| - | 500 | 1290 | 1370 | 11 | 45 | 579 | - | 44 |
| - | 600 | 1130 | 1200 | 14 | 55 | 540 | - | 39 |
| Quenching in oil from 850 °C + vacation at 560 °C, air cooling (named place of clippings sample) | ||||||||
| 160-200 | - | 1210 | 1260 | 12 | 49 | 687 | - | - |
| Quenching + tempering (forgings) | ||||||||
| 500-800 | - | 640 | 785 | 10 | 30 | 383 | 248-293 | - |
| Billet shafts and rotors of steam turbines on the other 108-1029-81 (in the delivery condition specified strength and direction and place the cuttings sample) | ||||||||
| - | - | 638-834 | ≥804 | ≥14 | ≥40 | ≥590 | - | - |
| Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential) | ||||||||
| - | - | 294 | 491 | 16 | 30 | 294 | - | - |
| Quenching in oil from 850 °C + vacation at 560 °C, air cooling (named place of clippings sample) | ||||||||
| ≤30 | - | 1250 | 1330 | 13 | 52 | 687 | - | - |
| Quenching + tempering (forgings) | ||||||||
| 500-800 | - | 685 | 835 | 10 | 30 | 383 | 262-311 | - |
| Billet shafts and rotors of steam turbines on the other 108-1029-81 (in the delivery condition specified strength and direction and place the cuttings sample) | ||||||||
| - | - | 638-834 | ≥765 | ≥11 | ≥32 | ≥440 | - | - |
| Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential) | ||||||||
| - | - | 392 | 589 | 16 | 30 | 491 | - | - |
| Quenching in oil from 850 °C + vacation at 560 °C, air cooling (named place of clippings sample) | ||||||||
| 160-200 | - | 1070 | 1150 | 13 | 40 | 785 | - | - |
| Quenching + tempering (forgings) | ||||||||
| 500-800 | - | 735 | 880 | - | - | - | 277-321 | - |
| Billet shafts and rotors of steam turbines on the other 108-1029-81 (in the delivery condition specified strength and direction and place the cuttings sample) | ||||||||
| - | - | 667-834 | ≥834 | ≥14 | ≥40 | ≥590 | - | - |
| Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential) | ||||||||
| - | - | 491 | 687 | 16 | 30 | 392 | - | - |
| Quenching in oil from 850 °C + vacation at 560 °C, air cooling (named place of clippings sample) | ||||||||
| 30-50 | - | 1210 | 1300 | 13 | 52 | 716 | - | - |
| Quenching + tempering (forgings) | ||||||||
| 100-300 | - | 785 | 930 | 11 | 35 | 481 | 293-331 | - |
| Billet shafts and rotors of steam turbines on the other 108-1029-81 (in the delivery condition specified strength and direction and place the cuttings sample) | ||||||||
| - | - | 667-834 | ≥834 | ≥10 | ≥30 | ≥390 | - | - |
| Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential) | ||||||||
| - | - | 589 | 765 | 16 | 35 | 491 | - | - |
| Quenching in oil (or water in oil) from 840-860 °C (exposure for 2.5-4.5 hours depending on the thickness and weight of the workpiece) with the following tempering in oil or air | ||||||||
| ≤100 | 570-580 | 980-1078 | 1176 | 7 | 35 | 490 | - | 39.6-43.5 |
| Quenching using water in oil from 850 °C + vacation at 600 °C, air cooling (named place of clippings sample) | ||||||||
| 120-160 | - | 1160 | 1220 | 15 | 54 | 736 | - | - |
| Quenching + tempering (forgings) | ||||||||
| 300-500 | - | 785 | 930 | 10 | 30 | 383 | 293-331 | - |
| Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential) | ||||||||
| - | - | 687 | 834 | 14 | 35 | 491 | - | - |
| Quenching in oil (or water in oil) from 840-860 °C (exposure for 2.5-4.5 hours depending on the thickness and weight of the workpiece) with the following tempering in oil or air | ||||||||
| ≤150 | 580-590 | 880-980 | 1078 | 10 | 35 | 490 | - | 34.8-42.5 |
| Quenching using water in oil from 850 °C + vacation at 600 °C, air cooling (named place of clippings sample) | ||||||||
| 200-240 | - | 1170 | 1210 | 14 | 53 | 765 | - | - |
| Normalization (forgings) | ||||||||
| 100-300 | - | 685 | 835 | 12 | 38 | 481 | 262-311 | - |
| Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential) | ||||||||
| - | - | 785 | 932 | 13 | 35 | 392 | - | - |
| Quenching in oil (or water in oil) from 840-860 °C (exposure for 2.5-4.5 hours depending on the thickness and weight of the workpiece) with the following tempering in oil or air | ||||||||
| ≤240 | 590-600 | 785-880 | 980 | 10 | 38 | 490 | - | 30.9-38.6 |
| Quenching using water in oil from 850 °C + vacation at 600 °C, air cooling (named place of clippings sample) | ||||||||
| 120-160 | - | 1150 | 1200 | 13 | 40 | 863 | - | - |
| Normalization (forgings) | ||||||||
| 300-500 | - | 685 | 835 | 11 | 33 | 383 | 262-311 | - |
| Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential) | ||||||||
| - | - | 883 | 1010 | 12 | 30 | 392 | - | - |
| Quenching in oil (or water in oil) from 840-860 °C (exposure for 2.5-4.5 hours depending on the thickness and weight of the workpiece) with the following tempering in oil or air | ||||||||
| ≤350 | 600-620 | 675-785 | 882 | 10 | 40 | 588 | - | 28-38.6 |
| Quenching using water in oil from 850 °C + vacation at 600 °C, air cooling (named place of clippings sample) | ||||||||
| 200-240 | - | 1070 | 1130 | 13 | 50 | 834 | - | - |
| Normalization (forgings) | ||||||||
| 100-300 | - | 735 | 880 | 12 | 35 | 481 | 277-321 | - |
| Forged billet rings for turbine generators of thermal power plants up to 500 MW I-VIII categories THAT 3-896-78 (samples tangential) | ||||||||
| - | - | 981 | 1079 | 11 | 30 | 294 | - | - |
| Quenching in oil (or water in oil) from 840-860 °C (exposure for 2.5-4.5 hours depending on the thickness and weight of the workpiece) with the following tempering in oil or air | ||||||||
| ≤30 | 550-570 | 1176-1274 | 1372 | 7 | 35 | 392 | - | 42.5-46.4 |
| Quenching using water in oil from 850 °C + vacation at 600 °C, air cooling (named place of clippings sample) | ||||||||
| 50-80 | - | 1130 | 1190 | 14 | 52 | 824 | - | - |
| Normalization (forgings) | ||||||||
| ≤100 | - | 785 | 930 | 12 | 40 | 579 | 293-331 | - |
| Quenching in oil from 850 °C + vacation at 600 °C, air cooling | ||||||||
| 25 | - | 1080 | 1180 | 12 | 50 | 765 | - | - |
| Quenching using water in oil from 850 °C + vacation at 600 °C, air cooling (named place of clippings sample) | ||||||||
| 80-120 | - | 1110 | 1170 | 14 | 52 | 912 | - | - |
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 |
| HRC | Rockwell hardness (indenter diamond spheroconical) |
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 | 210 | 83 | 7900 | 34 | 300 | - | - |
| 20 | 210 | - | 7900 | 34 | 300 | - | - |
| 100 | 203 | 80 | - | 34 | 321 | 12 | 496 |
| 200 | 197 | 77 | - | 34 | 365 | 125 | 508 |
| 300 | 190 | 75 | - | 33 | 437 | 129 | 525 |
| 400 | 184 | 72 | - | 32 | 516 | 133 | 538 |
| 500 | 176 | 69 | - | 32 | 613 | 136 | 567 |
| 600 | 170 | 66 | - | 30 | 750 | 138 | 601 |
| 700 | 154 | 60 | - | 29 | 897 | 138 | 672 |
| 800 | 137 | 53 | - | 28 | 1080 | 138 | 672 |
| 1000 | - | - | - | - | - | 107 | 697 |
A description of the physical symbols
| Name | Description |
|---|---|
| Е | The normal elasticity modulus |
| G | Modulus of elasticity shear torsion |
| r | Density |
| l | Coefficient of thermal conductivity |
| R | UD. the resistivity |
Technological properties
| Name | The value |
|---|---|
| Weldability | Does not apply to welded structures. |
| Propensity to temper brittleness | Tend not. |
| Forging temperature | Start - 1180 °C, the end - 780 °C. the cross Sections up to 100 mm was cooled in the pit, over 100 mm are subjected to low temperature annealing. |
| Flock-sensitive sensitivity | Excessively sensitive. |
