Steel 35G2

Designation

Name The value
Designation GOST Cyrillic 35Г2
Designation GOST Latin 35G2
Transliteration 35G2
By chemical elements 35Mn2

Description

35G2 steel is used: for the manufacture of shafts, axle shafts, axles, clutch levers, forks, flanges, crankshafts, connecting rods, bolts, rings, casings, gears and other parts used in various branches of engineering, which meet the requirements of increased wear resistance.

Note

Structural steel high-quality manganese.

Standards

Name Code Standards
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, GOST 2879-2006
Sheets and strips В33 GOST 1577-93
Bars and shapes В32 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 14-11-245-88, TU 14-1-1271-75, TU 14-1-5228-93, TU 14-136-367-2008
Sheets and strips В23 GOST 82-70, GOST 19903-74, GOST 103-2006, GOST 19903-90
Processing of metals by pressure. Forgings В03 GOST 8479-70, ST ЦКБА 010-2004
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90, TU 14-1-904-74

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
GOST 4543-71 0.31-0.39 ≤0.035 ≤0.035 1.4-1.8 ≤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%. In accordance with the order, the content of Mn = 1,2-1,6% can be established.

Mechanical properties

Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d5, % d10 y, % KCU, kJ/m2 HB, MPa
Hot-rolled steel and hot rolled with special surface finish
- - - - - - - - ≤187
Steel calibrated and calibrated with special surface finish
- - - - - - - - ≤207
Quenching in oil from 870 °C to + vacation at 650 °C, air cooling
≤25 - 365 620 18 - 40 - -
Quenching in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
100 - 660 800 - 16 60 410 241
Rod with cross section of 25 mm. Quenching in oil from 830 °C to + vacation, cooling in oil
- 375 - - 9 - 44 100 402
Normalizing at 870 °C, air cooling
- - 265 570 14 - - - -
Normalization at 840-870 °C, air cooling + vacation at 600-650 °C, air cooling
100-300 - 295 580 18 - 43 285 183-241
Quenching in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
75 - - 820 - 16 60 670 242
Rod with cross section of 25 mm. Quenching in oil from 830 °C to + vacation, cooling in oil
- 450 950 - 12 - 55 290 321
Normalizing at 870 °C, air cooling
- - 235 580 16 - - - -
Normalization at 860 °C, air cooling
100-300 - 275 530 17 - 38 334 156-197
Quenching in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
100 - 490 720 - 18 56 290 210
Rod with cross section of 25 mm. Quenching in oil from 830 °C to + vacation, cooling in oil
- 525 880 - 14 - 60 390 286
Normalizing at 870 °C, air cooling
- - 215 490 23 - - - -
Quenching in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
50 - 590 700 - 18 57 680 220
Rod with cross section of 25 mm. Quenching in oil from 830 °C to + vacation, cooling in oil
- 600 670 - 18 - 65 880 241
Annealing: heating to 775 °C at a rate of 250 deg/h, shutter speed, cooling with the furnace at a speed of 40 deg/h.
- - 380 670 23 - 57 471 179
Quenching in water from 820 °C to + vacation at 600 °C, cooling in water (named place of clippings sample)
75 - 540 730 - 18 54 590 210

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
KCU Toughness
HB Brinell hardness number

Physical characteristics

Temperature Е, HPa r, kg/m3 l, W/(m · °C)
0 204 7790 -
20 204 7790 -
100 - - 40
200 - - 38
300 - - 37
400 - - 36
500 - - 35

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 RDS required heating and subsequent heat treatment, the CCC requires subsequent heat treatment.
Склонность к отпускной хрупкости inclined
The temperature of forging Start - 1200 °C, the end - of 800 °C.
Flock-sensitive sensitivity sensitive
Machinability HB 156-207 Kn TV.SPL.=0.85 Kn b.St.=0.65