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Steel 65

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 65
Designation GOST Latin 65
Transliteration 65
The chemical elements 65

Description

65 steel is used: for the production of springs, springs and other parts which require higher strength and elastic properties, the wear resistance of parts operating in conditions of friction in the presence of high static and vibratory loads; hot-rolled strip profile with a bias for agricultural machines; knives for earth-moving machinery (bulldozers, scrapers, graders and graders, as well as to the dozer and grader blades equipment excavators, rollers and other earth moving machines); tinned wire for the manufacture of tires rotors of electric machines.

Note

Steel spring carbon.

Standards

Name Code Standards
Sectional and shaped rolling В22 GOST 1133-71, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76, GOST 12492.15-90, GOST 17152-89, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Armature, units and details of rolling stock of railways Д55 GOST 11530-93
Sheets and stripes В33 GOST 1577-93, GOST 4405-75, TU 14-1-4516-88
Tapes В34 GOST 2284-79
Steel wire medium- and high-carbon В72 GOST 7348-81, GOST 7372-79, GOST 9124-85, GOST 9389-75, GOST 26366-84
Sectional and shaped rolling В32 GOST 7417-75, GOST 7419-90, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 14959-79, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
Sheets and stripes В23 GOST 82-70, GOST 19903-74, GOST 103-2006, GOST 19903-90

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 17152-89 (ИСО 7129-82 0.62-0.7 ≤0.035 ≤0.035 0.5-0.8 ≤0.25 0.17-0.37 ≤0.25 The rest ≤0.2
GOST 14959-79 0.62-0.7 ≤0.035 ≤0.035 0.5-0.8 ≤0.25 0.17-0.37 ≤0.25 The rest ≤0.2
Fe is the basis.

Mechanical characteristics

Section, mm t отпуска, °C sT|s0,2, MPa σB, MPa d5, % d4 y, % Brinell hardness number, MPa HRC
Cold-rolled steel strip of 0.1-4.0 mm in the delivery state according to GOST 2284-79
- - - 740-1130 - - - - -
- - - 440-740 - ≥10 - - -
- - - 440-630 - ≥11 - - -
Rolled steel 12 mm. Quenching in oil from 800 °C + Vacation
- 400 ≥810 ≥1220 ≥5 - - - ≥45
Long products (samples). Quenching in oil from 800 °C + Vacation at 600-620 °C
- - - ≥690 ≥16 - - ≥185 -
Rolled steel 12 mm. Quenching in oil from 800 °C + Vacation
- 500 ≥760 ≥1130 ≥13 - ≥40 - ≥32
Long products (samples). Quenching in oil from 800 °C + Vacation at 600-620 °C
- - - ≥640 ≥14 - ≥19 ≥185 -
Rolled steel 12 mm. Quenching in oil from 800 °C + Vacation
- 600 ≥650 ≥930 ≥18 - ≥52 - ≥23
Long products (samples). Quenching in oil from 800 °C + Vacation at 600-620 °C
- - - ≥730 ≥18 - ≥20 ≥185 -
Cold-rolled steel strip. Normalization at 820 °C, air cooling
0.1-4 - ≥415 ≥820 - ≥19 ≥33 - -
Long products (samples). Quenching in oil from 800 °C + Vacation at 600-620 °C
- - - ≥600 ≥22 - ≥25 ≥170 -
Cold-rolled steel strip. Annealing at 820 °C
0.1-4 - ≥415 ≥810 - ≥22 ≥33 - -
Long products (samples). Quenching in oil from 800 °C + Vacation at 600-620 °C
- - - ≥450 ≥27 - ≥35 ≥140 -
Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Hardened in oil from 830 °C to + vacation at 470 °C
- ≥785 ≥980 ≥10 - ≥35 - -
Long products (samples). Quenching in oil from 800 °C + Vacation at 600-620 °C
- - - ≥280 ≥33 - ≥50 ≥120 -

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
HRC Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) a, 10-6 1/°С С, Дж/(кг · °С)
0 205 7810 - - -
20 205 7810 - - -
100 - - 68 11 483
200 - - 53 116 -
400 - - 36 132 525
500 - - 31 138 -
300 - - - 123 483
600 - - - 142 525
700 - - - 146 -
800 - - - 147 -
900 - - - 139 -
1000 - - - 139 -
1200 - - - 148 -

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 - 1230 °C, end - 830 °C. air Cooling.

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