Designation
| Name |
The value |
| Designation GOST Cyrillic |
18ЮТ |
| Designation GOST Latin |
18JuT |
| Transliteration |
18YuT |
| By chemical elements |
18AlTi |
| Name |
The value |
| Designation GOST Cyrillic |
Ч-33 |
| Designation GOST Latin |
Ch-33 |
| Transliteration |
Ch-33 |
| By chemical elements |
Zr-33 |
Description
18ЮТ steel is used: for the manufacture of steel bent closed welded square and rectangular sections with small radii fillets shelves, designed for use in agricultural machinery, tractor and other sectors of the economy; and nesvorny welded structures in construction.
Note
Low alloy steel with high fatigue resistance.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В22 |
GOST 25577-83, TU 14-105-568-93 |
| Sheets and strips |
В33 |
TU 14-1-4303-87, TU 14-1-5172-92 |
| Bars and shapes |
В32 |
TU 14-2-849-89 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Si |
Fe |
Cu |
Al |
Ti |
Ca |
| TU 14-1-4303-87 |
0.14-0.22 |
≤0.04 |
≤0.04 |
0.4-0.65 |
0.12-0.3 |
Rest |
0.01-0.03 |
0.02-0.07 |
0.01-0.04 |
≤0.03 |
| TU 14-1-5172-92 |
0.14-0.22 |
≤0.035 |
≤0.035 |
0.4-0.65 |
0.12-0.3 |
Rest |
≤0.3 |
0.02-0.07 |
0.01-0.04 |
0.001-0.03 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
| The rolled sheet in sadaani delivery on the other 14-1-5172-92 |
|
≥323 |
≥440 |
≥26 |
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 |
Technological properties
| Name |
The value |
| Weldability |
Without restrictions. |
