Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х15Н4ДМЛ |
| Designation GOST Latin |
08X15H4DML |
| Transliteration |
08H15N4DML |
| By chemical elements |
08Cr15Н4CuMo |
Description
08KH15N4DML steel is used: for the manufacture of castings of parts operating in sea water (heavily loaded propellers of icebreakers, etc.).
Note
Stainless steel austenitic-martensitic class. Steel corrosion resistant in sea water and atmospheric conditions. Compared with the steel stamps 08KH14NDL less sensitive to stress concentrators.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
GOST 977-88, OST 5Р.9285-95 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Mo |
| OST 5Р.9285-95 |
≤0.08 |
≤0.025 |
≤0.025 |
1-1.5 |
14-16 |
≤0.4 |
3.5-3.9 |
Rest |
1-1.4 |
0.3-0.45 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Castings for shipbuilding. Annealing in air 1030-1050 °C, air cooling + double holiday at 600-620 °C |
| - |
≥600 |
≥750 |
≥17 |
≥45 |
≥800 |
≤290 |
| Casting. Annealing in air 1030-1050 °C + vacation at 600-620 °C, air cooling |
| 100 |
≥589 |
≥736 |
≥17 |
≥45 |
≥981 |
- |
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 |
| d |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |
| HB |
Brinell hardness number |
Technological properties
| Name |
The value |
| Weldability |
limited weldability. Post-weld heat treatment is required. |
