Steel 34ХМА (34ХМ)
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 | 34ХМА |
| Designation GOST Latin | 34XMA |
| Transliteration | 34HMA |
| The chemical elements | 34CrMo |
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 34ХМ |
| Designation GOST Latin | 34XM |
| Transliteration | 34HM |
| The chemical elements | 34CrMo |
Description
34ХМА steel is used: for the manufacture of forgings of shafts of compressors and gas turbines; blank discs of steam turbines with a working temperature up to 350 °C; billet shafts and solid-forged rotors of stationary and transport steam turbines.
Standards
| Name | Code | Standards |
|---|---|---|
| Metal forming. Forgings | В03 | TU 108-1028-81, TU 108-1029-81, TU НЗЛ 342-89 |
| Bulls. Blanks. Slabs | В31 | TU НЗЛ 341-93 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | Mo |
|---|---|---|---|---|---|---|---|---|---|---|
| TU 108-1028-81 | 0.3-0.4 | ≤0.022 | ≤0.025 | 0.4-0.7 | 0.9-1.3 | ≤0.37 | ≤0.5 | The rest | ≤0.25 | 0.2-0.3 |
| TU 108-1029-81 | 0.3-0.38 | ≤0.022 | ≤0.025 | 0.4-0.7 | 0.9-1.3 | ≤0.37 | ≤0.5 | The rest | ≤0.25 | 0.4-0.55 |
| TU НЗЛ 342-89 | 0.3-0.4 | ≤0.025 | ≤0.025 | 0.4-0.7 | 0.9-1.3 | 0.17-0.37 | ≤0.5 | The rest | ≤0.3 | 0.2-0.3 |
Fe is the basis.
According to TU NZL 342-89 the chemical composition is given for steel grade 34XMA.
According to TU 108-1028-81 and TU 108-1029-81 the chemical composition is given for steel grade 34XMA. In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%.
In the manufacture of blanks with discs with hub heights from 450 to 650 mm, the content of phosphorus and sulfur in steel should not be more than 0.018% of each; for metal VDP and ELP, the deviation of manganese content +0.10% / - 0.15% is allowed. In the ESR steel, the sulfur content should not be more than 0.015%. When casting steel without evacuation, for the manufacture of disc blanks with a hub height of more than 300 mm, hydrogen content in the metal must be determined. The results of determination of the hydrogen content are not acceptance-delivery and, at the request of the consumer, are to be entered in the procurement certificate.
According to TU NZL 342-89 the chemical composition is given for steel grade 34XMA.
According to TU 108-1028-81 and TU 108-1029-81 the chemical composition is given for steel grade 34XMA. In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%.
In the manufacture of blanks with discs with hub heights from 450 to 650 mm, the content of phosphorus and sulfur in steel should not be more than 0.018% of each; for metal VDP and ELP, the deviation of manganese content +0.10% / - 0.15% is allowed. In the ESR steel, the sulfur content should not be more than 0.015%. When casting steel without evacuation, for the manufacture of disc blanks with a hub height of more than 300 mm, hydrogen content in the metal must be determined. The results of determination of the hydrogen content are not acceptance-delivery and, at the request of the consumer, are to be entered in the procurement certificate.
Mechanical characteristics
| Section, mm | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 |
|---|---|---|---|---|---|
| Forged billet shafts of compressors and gas turbines, heat-treated in the delivery condition on the other NZL 342-89 (longitudinal samples, in the column of the delivery condition specified strength) | |||||
| ≤650 | ≥343 | ≥568 | ≥17 | ≥35 | ≥441 |
| ≤300 | 490-687 | ≥638 | ≥15 | ≥35 | ≥490 |
| 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) | |||||
| - | ≥343 | ≥569 | ≥17 | ≥40 | ≥390 |
| - | ≥324 | ≥540 | ≥13 | ≥32 | ≥390 |
| - | ≥490 | ≥638 | ≥15 | ≥40 | ≥590 |
| - | ≥461 | ≥608 | ≥11 | ≥32 | ≥450 |
| Forged blanks of disks of steam turbines on the other 108-1028-81 (in the delivery condition specified strength; in cross-section, if regulated, see the recommended height of the hub) | |||||
| - | 392-589 | ≥589 | ≥17 | ≥40 | ≥390 |
| - | 490-687 | ≥657 | ≥15 | ≥40 | ≥490 |
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 |
