Designation
| Name |
The value |
| Designation GOST Cyrillic |
06Х12Н3ДЛ |
| Designation GOST Latin |
06X12H3DL |
| Transliteration |
06H12N3DL |
| By chemical elements |
06Cr12Н3Cu |
Description
06Х12Н3ДЛ steel is used: for the manufacture of castings parts, steam, gas, hydraulic turbines and compressors; blades for Kaplan turbines; casting parts of steam turbine nuclear power plant.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and General rules |
В30 |
OST 108.910.04-84 |
| Welding and cutting metals. Soldering, riveting |
В05 |
OST 24.300.04-91, RTM 108.020.122-78 |
| Steel castings |
В82 |
TU 108.1024-83, TU 108.11.158-86, TU 108-923-80, TU 108-976-80, TU 108-977-80, TU 108-978-80 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
| TU 108-923-80 |
≤0.06 |
≤0.025 |
≤0.025 |
≤0.6 |
12-13.5 |
≤0.3 |
2.8-3.2 |
Rest |
0.8-1.1 |
| OST 108.910.04-84 |
≤0.06 |
≤0.03 |
≤0.03 |
≤0.6 |
12-13.5 |
≤0.3 |
2.8-3.2 |
Rest |
0.8-1.1 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
HB, MPa |
| The castings as delivered on the other 108-923-80 (specified impact toughness KCV+20 °C) |
|
≥490 |
≥686 |
≥14 |
≥30 |
≥490 |
187-255 |
| The castings as delivered on the other 108-977-80 (specified impact toughness KCV+20 °C) |
|
≥550 |
≥700 |
≥14 |
≥30 |
≥400 |
187-255 |
| The castings as delivered on the other 108-978-80 (specified impact toughness KCV+20 °C) |
|
≥550 |
≥700 |
≥12 |
≥30 |
≥400 |
187-255 |
| The castings as delivered on the other 108.1024-83 (indicated by the impact strength KCV+20 °C) |
|
539-735 |
≥637 |
≥12 |
≥35 |
≥490 |
197-293 |
| The castings as delivered on the other 108.11.158-86 (specified impact toughness KCV+20 °C) |
|
≥490 |
≥637 |
≥12 |
≥35 |
≥490 |
- |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |
| HB |
Brinell hardness number |
Technological properties
| Name |
The value |
| Welding defects |
Welding defects of castings after cutting is carried out with preliminary and attendant heating to 100-150 °C. Welding defects by manual welding is done with electrodes type e-12H13 (GOST 10052) brand CL-51. After repair of defects by welding is applied heat treatment. |
