Steel 08Х15Н25Т2МФР (ЭП674)

Designation

Name The value
Designation GOST Cyrillic 08Х15Н25Т2МФР
Designation GOST Latin 08X15H25T2MFP
Transliteration 08H15N25T2MFR
By chemical elements 08Cr15Н25Ti2MoVB
Name The value
Designation GOST Cyrillic ЭП674
Designation GOST Latin EP674
Transliteration EhP674
By chemical elements -

Description

08Х15Н25Т2МФР steel is used: for the manufacture of high-load working and fasteners turbines and other power equipment.

Note

Dispersion-hardened steel.
Analogue is the steel Grade 660 ASTM SA-638/SA-638M.

Standards

Name Code Standards
Processing of metals by pressure. Forgings В03 TU 14-1-1530-75, TU 14-1-2902-80

Chemical composition

Standard C S P Mn Cr Si Ni Fe Al V B Ti Mo Ce Zr
TU 14-1-2902-80 ≤0.08 ≤0.015 ≤0.02 1.2-1.7 14-16 ≤0.7 24-26 Rest ≤0.3 0.2-0.4 ≤0.01 1.9-2.4 1.1-1.6 ≤0.01 ≤0.01
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Forgings on the other 14-1-2902-80. Quenching in oil with 970-990 °C (exposure 2 hours) + Aging at 710-730 °C (aging 16 h), air cooling
≥610 ≥880 ≥16 ≥20 ≥490 269-341

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