Designation
| Name |
The value |
| Designation GOST Cyrillic |
80 |
| Designation GOST Latin |
80 |
| Transliteration |
80 |
| By chemical elements |
80 |
Description
80 steel is used: for the production of round and flat springs and parts operating in conditions of friction and under the action of vibration loads; knives earthmoving machinery (bulldozers, scrapers, graders and graders, as well as to the dozer and grader blades equipment excavators, rollers and other earth moving machines).
Note
Steel spring carbon.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В32 |
GOST 14959-79, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008 |
| Bars and shapes |
В22 |
GOST 17152-89 |
| Steel wire medium and high carbon |
В72 |
GOST 7348-81, GOST 9389-75, GOST 26366-84 |
| Tape |
В24 |
TU 14-4-107-72 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
| GOST 17152-89 (ИСО 7129-82 |
0.77-0.85 |
≤0.035 |
≤0.035 |
0.5-0.8 |
≤0.25 |
0.17-0.37 |
≤0.25 |
Rest |
≤0.2 |
| GOST 14959-79 |
0.77-0.85 |
≤0.035 |
≤0.035 |
0.5-0.8 |
≤0.25 |
0.17-0.37 |
≤0.25 |
Rest |
≤0.2 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
| Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Hardened in oil from 830 °C to + vacation at 470 °C |
|
≥930 |
≥1080 |
≥8 |
≥30 |
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 |
| y |
The relative narrowing |
