Steel 06Х12Н3ДЛ

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.