Steel Х25Н13АТЛ

Designation

Name The value
Designation GOST Cyrillic Х25Н13АТЛ
Designation GOST Latin X25H13ATL
Transliteration H25N13ATL
By chemical elements Cr25Н13NTi

Description

Х25Н13АТЛ steel is used: for the manufacture of castings parts, steam, gas, hydraulic turbines and axial compressors operating at temperatures up to +700 °C.

Note

Steel corrosion resistant austenitic class.
At increased requirements to the details of heat resistance steel Х25Н13АТЛ operated at temperatures up to +580 °C. If the steel Х25Н13АТЛ used as high-temperature, operating temperature max details +650 °C.

Standards

Name Code Standards
Steel castings В82 OST 108.961.04-80
Welding and cutting metals. Soldering, riveting В05 RTM 108.020.122-78

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N Ti
OST 108.961.04-80 0.13-0.2 ≤0.025 ≤0.025 1-1.5 23-25 ≤0.7 12-14 Rest ≤0.3 0.08-0.18 0.1-0.2
Fe is the basis.
According to OST 108.961.04-80, the total sulfur and phosphorus content should be ≤ 0.050% for all possible tolerances.

Mechanical properties

sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2
Casting parts of gas turbines. Austenization at 1160-1180 °C, air cooling + ageing at 760-780 °C (extract 10 h) cooling furnace
≥235 ≥441 ≥20 ≥30 ≥340

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

Technological properties

Name The value
Welding defects Welding defects of castings after cutting is usually carried out without heating. Welding defects of manual welding is done with electrodes type e-09Х19Н11Г3М2Ф (GOST 10052) brand LPS-5. After welding and repair of defects by welding is applied heat treatment.