Steel 60S2

Designation

Name The value
Designation GOST Cyrillic 60С2
Designation GOST Latin 60C2
Transliteration 60S2
By chemical elements 60С2

Description

60S2 steel is used: for the manufacture of hot rolled plates; heavy-duty springs, torsion shafts, spring rings and washers, collets, friction discs measuring tapes.

Note

Steel spring alloy quality.

Standards

Name Code Standards
Sheets and strips В23 GOST 103-2006
Bars and shapes В32 GOST 1051-73, GOST 7417-75, GOST 7419-90, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 14959-79, TU 14-1-2118-77, TU 14-1-501-73, TU 14-11-245-88, TU 14-136-367-2008
Bars and shapes В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Steel wire medium and high carbon В72 GOST 26366-84
Sheets and strips В33 GOST 4405-75, TU 14-1-1409-75, TU 14-1-1986-77, TU 14-130-278-96
Tape В34 STP М334-80

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 14959-79 0.57-0.65 ≤0.035 ≤0.035 0.6-0.9 ≤0.3 1.5-2 ≤0.25 Rest ≤0.2
Fe is the basis.

Mechanical properties

Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d5, % d4 y, % KCU, kJ/m2 HB, MPa HRC
Cold-rolled steel strip at STP М334-80. After annealing
0.15-3 - - ≥900 - ≥8 - - - -
Rolled steel. Quenching in oil from 850 °C + Vacation
- 300 - - ≥5 - ≥27 ≥196 ≥465 -
The billet 17 mm Quenching in oil from 860 °C to + Vacation at 550 °C
- - ≥1100 ≥1270 11-13 - ≥33 ≥235 - -
Sheet. Isothermal annealing with 860-880 °C in molten salt (tсоли=310-330 °C) + vacation at 310-330 °C, air cooling
≤10 - ≥1590 ≥1760 ≥12 - ≥50 ≥608 - 47-50
Rolled steel. Quenching in oil from 850 °C + Vacation
- 400 - ≥1680 ≥7 - ≥34 ≥196 ≥425 -
The billet 17 mm Quenching in oil from 860 °C to + Vacation at 550 °C
- - ≥930 ≥1220 ≥15 - ≥44 ≥422 - -
Rolled steel. Quenching in oil from 850 °C + Vacation
- 500 - ≥1300 ≥10 - ≥42 ≥226 ≥345 -
The billet 17 mm Quenching in oil from 860 °C to + Vacation at 550 °C
- - ≥820 ≥950 ≥19 - ≥71 ≥432 - -
Spring. Wrapped at 850-870 °C, quenching in oil + Vacation at 430-460 °C, air cooling
- - - - - - - - 388-477 -
Rolled steel. Quenching in oil from 850 °C + Vacation
- 600 - ≥1030 ≥17 - ≥48 - ≥295 -
The billet 17 mm Quenching in oil from 860 °C to + Vacation at 550 °C
- - ≥510 ≥590 ≥23 - ≥87 ≥422 - -
Spring. Quenching in oil with 850-870 °C + Vacation at 400-450 °C, air cooling
- - - - - - - - 387-418 -
Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Quenching in oil from 870 °C to + vacation at 470 °C
- ≥1175 ≥1270 ≥6 - ≥25 - - -
Samples with a diameter of 10 mm, a length of 50 mm after rolling. The rate of deformation of 20 mm/min strain Rate 0,007 1/C
- - ≥83 ≥97 ≥66 - ≥97 - - -
- - ≥55 ≥67 ≥62 - ≥96 - - -
- - ≥35 ≥42 ≥61 - ≥100 - - -
- - ≥20 ≥26 ≥78 - ≥100 - - -
- - ≥12 ≥15 ≥90 - ≥100 - - -
Rolled steel. Quenching in oil from 860 °C to + Vacation at 425 °C, air cooling
- - ≥1370 ≥1670 ≥10 - ≥40 - - -
- - ≥1220 ≥1550 ≥20 - ≥55 - - -
- - ≥1080 ≥1270 ≥25 - ≥75 - - -

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
d4 Elongation after rupture
y The relative narrowing
KCU Toughness
HB Brinell hardness number
HRC Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature Е, HPa G, HPa r, kg/m3 l, W/(m · °C) a, 10-6 1/°C С, J/(kg · °C)
0 212 82 7680 28 - -
20 212 - 7680 28 - -
100 206 80 7660 29 118 510
200 198 77 7630 29 127 510
300 192 74 7590 30 133 520
400 181 69 7570 30 137 535
500 178 68 7520 30 141 565
600 158 60 - 29 145 585
700 144 54 - 29 144 620
800 134 50 - 28 144 620
1000 - - - - 122 700

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
a The coefficient of linear expansion

Technological properties

Name The value
Weldability does not apply to welded structures
Склонность к отпускной хрупкости tend not
The temperature of forging Start - 1200 °C, the end - of 800 °C. the cooling of the workpiece cross-section up to 250 mm in the air, 251-300 mm - in the pit
Flock-sensitive sensitivity not sensitive
Machinability In hot-rolled condition at 270-320 HB and blower SB=1080 MPa Kn TV.SPL.=0,70 Kn b.St.=0,27