Steel 08KH14NDL

Designation

Name The value
Designation GOST Cyrillic 08Х14НДЛ
Designation GOST Latin 08X14HDL
Transliteration 08H14NDL
By chemical elements 08Cr14НCu

Description

08KH14NDL steel is used: for the manufacture of castings of parts operating in sea water (propellers, etc.).

Note

Steel corrosion-resistant martensitic class.
Steel 08KH14NDL corrosion resistant in sea water and atmospheric conditions. Corrosion resistance higher than that of steel grades 15KH13L and 20KH13L.

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
OST 5Р.9285-95 ≤0.08 ≤0.025 ≤0.025 0.5-0.8 13-14.5 ≤0.4 1.2-1.6 Rest 0.8-1.2
Fe is the basis.
According to OST 5R.9285-95, the molybdenum content up to 0.12% is not a defect sign provided that the requirements of the standard are observed and if there are no special instructions in the technical conditions of the order or drawing.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d y, % KCU, kJ/m2 HB, MPa
Quenching in air from 1,000 to 1,200 °C + vacation at 660-700 °C, air cooling
100 ≥510 ≥648 ≥15 ≥40 ≥590 -
Castings for shipbuilding. Annealing in air from 980-1000 °C, air cooling + double holiday at 670-700 °C
- ≥500 ≥650 ≥15 ≥40 ≥600 ≤241

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.