Steel 65
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. |