Steel 08KH15N4DML

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.