Steel 40GR (40Г1Р)

Designation

Name The value
Designation GOST Cyrillic 40ГР
Designation GOST Latin 40GP
Transliteration 40GR
By chemical elements 40MnB
Name The value
Designation GOST Cyrillic 40Г1Р
Designation GOST Latin 40G1P
Transliteration 40G1R
By chemical elements 40Mn1B

Description

40GR steel is used: for the manufacture after the improvement rivets for critical applications; after cementation, or cyanidation — piston pins, friction discs, finger springs, Cam rollers, bolts, nuts, screws, gears, worms, and other parts with high hardness and wear resistance of the surface; without the heat treatment as welded sub frames, shoes, scarves, fittings, bushings; track links of tractors.

Note

Structural steel high-quality manganese.

Standards

Name Code Standards
Bars and shapes В32 GOST 4543-71, GOST 14955-77, TU 14-1-2118-77, TU 14-1-4949-91, TU 14-11-245-88, TU 14-136-367-2008
Bars and shapes В22 GOST 5422-73, GOST 8319.0-75
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90
Sheets and strips В23 TU 14-1-3389-82
Sheets and strips В33 TU 14-105-539-90

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Rolled steel. Annealing in air from 860 °C to + Vacation at 600 °C, air cooling
25 ≥355 ≥590 ≥17 ≥45 ≥590 ≥207

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