Steel 65S2VA

Designation

Name The value
Designation GOST Cyrillic 65С2ВА
Designation GOST Latin 65C2BA
Transliteration 65S2VA
By chemical elements 65С2W

Description

Steel 65S2VA used: for the manufacture of critical and high-loaded springs and leaf springs; fine springs and measuring tapes.

Note

Steel spring alloy of high quality.

Standards

Name Code Standards
Sheets and strips В23 GOST 103-2006
Bars and shapes В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Wire, steel, alloy В73 GOST 14963-78, TU 14-4-70-72
Tape В34 GOST 2283-79
Steel wire medium and high carbon В72 GOST 26366-84
Sheets and strips В33 GOST 4405-75, TU 1-14-131-1017-2005, TU 14-1-723-73
Bars and shapes В32 GOST 7417-75, GOST 7419-90, GOST 8559-75, GOST 8560-78, GOST 14959-79, TU 14-1-2118-77, TU 14-178-179-88, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
Classification, nomenclature and General rules В20 OST 1 90005-91
Blanks. Of the workpiece. Slabs В31 TU 14-1-1833-76

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu W
GOST 14959-79 0.61-0.69 ≤0.025 ≤0.025 0.7-1 ≤0.3 1.5-2 ≤0.25 Rest ≤0.2 0.8-1.2
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
Rolled sheet. Isothermal quenching with exposure at 270 °C + Vacation
- - ≥1750 ≥2110 ≥8 - ≥38 ≥432 - -
Rolled steel. Quenching in oil from 860 °C to + Leave at 400 °C
- - ≥1860 ≥2060 ≥8 - ≥30 ≥274 - -
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
- - - 1520-1770 - - - - - 44-48
Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery
0.1-4 - - 780-1180 - - - - - -
Rolled sheet. Isothermal quenching with exposure at 270 °C + Vacation
- 150 ≥1810 ≥2010 ≥9 - ≥38 ≥432 - -
Rolled steel. Quenching in oil from 860 °C to + Leave at 400 °C
- - ≥1670 ≥2060 ≥10 - ≥33 ≥235 - -
Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery
0.1-4 - - ≤880 - ≥8 - - - -
Rolled sheet. Isothermal quenching with exposure at 270 °C + Vacation
- 280 ≥1830 ≥1930 ≥11 - ≥38 ≥500 - -
Rolled steel. Quenching in oil from 860 °C to + Leave at 400 °C
- - ≥1570 ≥1810 ≥11 - ≥29 - - -
Wire with special surface finishes for the manufacture of springs cold-wound in the delivery condition according to GOST 14963-78
0.5-14 - - ≤1030 - - - - - -
Rolled sheet. Isothermal quenching with exposure at 270 °C + Vacation
- 310 ≥1830 ≥1930 ≥10 - ≥40 ≥520 - -
Rolled steel. Quenching in oil from 860 °C to + Leave at 400 °C
- - ≥1370 ≥1620 ≥15 - ≥60 - - -
Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Quenching in oil from 850 °C + Vacation at 420 °C
- ≥1665 ≥1860 ≥5 - ≥20 - ≤285 -
Rolled sheet. Isothermal quenching with exposure at 270 °C + Vacation
- 400 ≥1790 ≥1860 ≥11 - ≥40 ≥491 - -
Rolled steel. Quenching in oil from 860 °C to + Leave at 400 °C
- - ≥1960 ≥2110 ≥8 - ≥27 ≥245 - -
- - ≥2010 ≥2160 ≥8 - ≥26 ≥216 - -
Rolled steel. Quenching in oil from 860 °C to + Vacation at 450 °C
- - ≥1670 ≥1760 ≥10 - ≥35 ≥255 - -
- - ≥1370 ≥1710 ≥10 - ≥30 ≥255 - -
- - ≥1270 ≥1570 ≥11 - ≥21 - - -
- - ≥1180 ≥1370 ≥15 - ≥50 - - -
- - ≥1710 ≥1810 ≥10 - ≥33 ≥235 - -
- - ≥1760 ≥1860 ≥10 - ≥32 ≥235 - -

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)
20 211 82 7850 27 - -
100 206 80 - 27 115 475
200 200 78 - 28 125 500
300 195 74 - 29 13 510
400 185 70 - 29 135 530
500 178 67 - 29 138 555
600 154 58 - 29 143 580
700 136 51 - 28 145 615
800 131 49 - 28 145 615
1000 - - - - 135 690

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 - 1100 °C, the end of - 900 °C.
Flock-sensitive sensitivity not sensitive.