Steel 18K
Designation
| Name |
The value |
| Designation GOST Cyrillic |
18К |
| Designation GOST Latin |
18K |
| Transliteration |
18K |
| The chemical elements |
18 |
Description
18K steel is used: for the manufacture of parts, boilers, vessels working under pressure at ambient, elevated and reduced temperatures.
Standards
| Name |
Code |
Standards |
| Sheets and stripes |
В23 |
GOST 5520-79, GOST 19903-74, GOST 19903-90 |
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
kJ/m2, кДж/м2 |
| Steel hot-rolled sheet in the delivery condition |
| ≤20 |
≥275 |
430-520 |
≥20 |
≥590 |
| 21-40 |
≥265 |
430-520 |
≥20 |
≥590 |
| 41-60 |
≥255 |
430-520 |
≥20 |
≥590 |
| Leaves categories: 2-4, 10, 16, 18-21 (KCU - as supplied / after mechanical aging) |
| ≤5 |
≥275 |
430-520 |
≥20 |
- |
| 21-40 |
≥265 |
430-520 |
≥20 |
≥588/294 |
| 41-60 |
≥255 |
430-520 |
≥20 |
≥588/294 |
| 5-20 |
≥275 |
430-520 |
≥20 |
≥588/294 |
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 |
| kJ/m2 |
Toughness |
Technological properties
| Name |
The value |
| Weldability |
Welded without any restrictions. |
