Steel 15ХР

Designation

Name The value
Designation GOST Cyrillic 15ХР
Designation GOST Latin 15XP
Transliteration 15HR
By chemical elements 15CrB

Description

15ХР steel is used: for the manufacture of gears, piston pins.

Note

Low alloy steel with slaborazvitoj core.
Steel structural quality. Stainless steel is marked 15ХРА.

Standards

Name Code Standards
Bars and shapes В32 TU 14-1-3238-81, TU 14-1-2422-78, TU 14-1-3238-2006

Chemical composition

Standard C S P Mn Cr Si Fe B
TU 14-1-3238-81 0.12-0.17 ≤0.025 ≤0.025 0.4-0.7 0.7-1 0.17-0.37 Rest 0.002-0.005
Fe is the basis.
According to TU 14-1-3238-81, the chemical composition is given for steel grade 15ХРА.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2
Bars and strip, hot-rolled, forged, kalibrovochnye with special surface finish on the other 14-1-3238-81. Quenching in oil or air at 880 °C Quenching in oil or air with 770-820 °C + Vacation at 180 °C, air cooling
15 ≥539 ≥735 ≥15 ≥50 ≥880

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