Steel 08KH20N14S2 (ЭИ732)

Designation

Name The value
Designation GOST Cyrillic 08Х20Н14С2
Designation GOST Latin 08X20H14C2
Transliteration 08H20N14S2
By chemical elements 08Cr20Н14С2
Name The value
Designation GOST Cyrillic ЭИ732
Designation GOST Latin EI732
Transliteration EhI732
By chemical elements -

Description

08KH20N14S2 steel is used: for the manufacture of pipes; details of pipeline valves; parts of machinery and special equipment.

Note

Austenite heat-resistant steel-ferritic class.
Temperature intense scaling in air 1000−1050 °C.
Resistant to carburizing environments.

Standards

Name Code Standards
Classification, nomenclature and General rules В30 GOST 5632-72
Bars and shapes В32 GOST 5949-75, TU 14-11-245-88
Steel pipes and fittings to them В62 GOST 9940-81, GOST 9941-81, TU 14-3-1654-89
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-565-84

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
GOST 5632-72 ≤0.08 ≤0.025 ≤0.035 ≤1.5 19-22 2-3 12-15 Rest ≤0.3 ≤0.2 ≤0.2 ≤0.3 ≤0.2
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2
Bars hot rolled and forged according to GOST 5949-75. Annealing in air 1000-1150 °C
≥245 ≥540 ≥40 ≥50 ≥981
Seamless hot deformed tubes in the delivery condition according to GOST 9940-81
- ≥510 ≥35 - -

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