Steel 15G (15Г1)

Designation

Name The value
Designation GOST Cyrillic 15Г
Designation GOST Latin 15G
Transliteration 15G
By chemical elements 15Mn
Name The value
Designation GOST Cyrillic 15Г1
Designation GOST Latin 15G1
Transliteration 15G1
By chemical elements 15Mn1

Description

Steel 15G used: for the manufacture after the improvement of the 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.

Note

Steel structural quality manganese.

Standards

Name Code Standards
Bars and shapes В32 GOST 1051-73, GOST 4543-71, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, GOST 1050-2013, TU 14-1-2118-77, TU 14-1-2247-77, TU 14-1-3938-85, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
Bars and shapes В22 GOST 1133-71, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8319.0-75, GOST 9234-74, GOST 11474-76, GOST 2590-2006, GOST 2591-2006
Sheets and strips В33 GOST 1577-93, TU 14-1-3769-84, TU 14-1-4276-87
Sheets and strips В23 GOST 82-70, GOST 19903-74, GOST 103-2006, GOST 19903-90
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
GOST 4543-71 0.12-0.19 ≤0.035 ≤0.035 0.7-1 ≤0.3 0.17-0.37 ≤0.3 Rest ≤0.3 ≤0.05 ≤0.03 ≤0.15 ≤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 t отпуска, °C sT|s0,2, MPa σU, MPa d5, % d10 y, % HB, MPa
Normalizing at 880 °C, air cooling
≤25 - 245 410 26 - 55 -
Quenching in water from 890 °C to + vacation at 425 °C, cooling in oil
19 - 870 940 - 6 67 -
Billets with a diameter of 23 mm. Normalization 900 °C. Quenching in water from 890 °C to + vacation, cooling in oil.
- 400 930 980 - 5 65 -
Steel calibrated and calibrated with special surface finish, hot rolled and hot rolled with special surface finish
- - - - - - - ≤163
Quenching in water from 890 °C to + vacation at 425 °C, cooling in oil
60 - 435 560 - 17 78 -
Billets with a diameter of 23 mm. Normalization 900 °C. Quenching in water from 890 °C to + vacation, cooling in oil.
- 450 780 870 - 8 70 -
Quenching in water from 890 °C to + vacation at 450 °C, cooling in oil
19 - 790 870 - 8 67 -
Billets with a diameter of 23 mm. Normalization 900 °C. Quenching in water from 890 °C to + vacation, cooling in oil.
- 550 640 700 - 12 78 -
Quenching in water from 890 °C to + vacation at 450 °C, cooling in oil
60 - 415 560 - 17 72 -

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
d10 Elongation after rupture
y The relative narrowing
HB Brinell hardness number

Physical characteristics

Temperature r, kg/m3 a, 10-6 1/°C С, J/(kg · °C)
0 7810 - -
300 - 123 538
600 - 149 538

A description of the physical symbols

Name Description
Е The normal elasticity modulus
G Modulus of elasticity shear torsion
r Density
l Coefficient of thermal conductivity
R UD. the resistivity

Technological properties

Name The value
Weldability weldability is good.
Склонность к отпускной хрупкости tend not
The temperature of forging Start - 1200 °C, the end - 825 °C. air Cooling.
Flock-sensitive sensitivity not sensitive