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Steel 65S2VA

70G steel Steel 60S2HFA Steel 60KhFA (60KhF) Steel 65 Steel 65G (65G1) Steel 65GA Steel 65S2VA Steel 68A Steel 68GA Steel 70 Steel 60S2HG Steel 70G2 Steel 70S2HA (EI142) Steel 70C3A 70KhGFA steel Steel 75 Steel 80 Steel 85 KT-2 steel KT-3 steel Steel 55S2A Steel 3K-7 Steel 40P Steel 50RA (50P) 50KhG steel 50KhGA steel 50KhGFA steel Steel 50KhFA (50KhF) 51KhFA steel Steel 55C2 Steel 60С2Х (60С2ХА; 60С2ХАA) Steel 55S2GF Steel 55KhGR Steel 55KhFA (55KhF) 60G steel Steel 60C2 Steel 60S2A Steel 60S2G Steel 60C2H2A

Designation

Name The value
Designation GOST Cyrillic 65С2ВА
Designation GOST Latin 65C2BA
Transliteration 65S2VA
The 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 stripes В23 GOST 103-2006
Sectional and shaped rolling В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Steel alloy wire В73 GOST 14963-78, TU 14-4-70-72
Tapes В34 GOST 2283-79
Steel wire medium- and high-carbon В72 GOST 26366-84
Sheets and stripes В33 GOST 4405-75, TU 1-14-131-1017-2005, TU 14-1-723-73
Sectional and shaped rolling 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 norms В20 OST 1 90005-91
Bulls. Blanks. 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 The rest ≤0.2 0.8-1.2
Fe is the basis.

Mechanical characteristics

Section, mm t отпуска, °C sT|s0,2, MPa σB, MPa d5, % d4 y, % kJ/m2, кДж/м2 Brinell hardness number, 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
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture
y The relative narrowing
kJ/m2 Toughness
HRC Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature Е, ГПа G, ГПа r, кг/м3 l, Вт/(м · °С) a, 10-6 1/°С С, Дж/(кг · °С)
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.
Propensity to temper brittleness Tend not.
Forging temperature Start - 1100 °C, the end of - 900 °C.
Flock-sensitive sensitivity not sensitive.

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