Steel 15N2M (15НМ)

Designation

Name The value
Designation GOST Cyrillic 15Н2М
Designation GOST Latin 15H2M
Transliteration 15N2M
By chemical elements 15Н2Mo
Name The value
Designation GOST Cyrillic 15НМ
Designation GOST Latin 15HM
Transliteration 15NM
By chemical elements 15НMo

Description

15N2M steel is used: for manufacturing of gear rims, gear wheels, fingers and other critical parts operating under conditions of shock and alternating loads.

Note

Steel structural quality nickelmania.

Standards

Name Code Standards
Bars and shapes В32 GOST 4543-71, GOST 14955-77, TU 14-1-2118-77, TU 14-11-245-88, TU 14-136-367-2008
Bars and shapes В22 GOST 8319.0-75
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90

Chemical composition

Standard C S P Mn Si Ni Fe Cu V Ti Mo W
GOST 4543-71 0.1-0.18 ≤0.035 ≤0.035 0.4-0.7 0.17-0.37 1.5-1.9 Rest ≤0.3 ≤0.05 ≤0.03 0.2-0.3 ≤0.2
Fe is the basis.
According to GOST 4543-71 the content in high-quality steel is regulated: P≤0,025%; S≤0.025%; Сu≤0.30%; in high-grade steel: P≤0,025%; S≤0.015%; Сu≤0.25%.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
Quenching in oil from 860 °C to + vacation at 180 °C
≤15 650 850 11 50

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