Steel 16KH18N12S4TJUL (ЭИ654ЛК)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
16Х18Н12С4ТЮЛ |
| Designation GOST Latin |
16X18H12C4TJuL |
| Transliteration |
16H18N12S4TYuL |
| The chemical elements |
16Cr18Н12С4TiAl |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ654ЛК |
| Designation GOST Latin |
EI654LK |
| Transliteration |
EhI654LK |
| The chemical elements |
- |
Description
16KH18N12S4TJUL steel is used: for the manufacture of castings, and a molten-welded components operating in corrosive environments, in particular concentrated nitric acid at temperatures up to +105 °C; casting of the 3rd group of parts of valves and actuators to it, working in concentrated nitric acid at temperatures up to +80 °C and in less aggressive environments when the working environment temperature from -70 to +300 °C without limitation of the rated working pressure.
Note
Steel corrosion resistant austenitic-ferritic class.
Standards
| Name |
Code |
Standards |
| Castings with special properties (cast iron and steel) |
В83 |
GOST 2176-77 |
| Castings, steel |
В82 |
GOST 977-88, OST 26-07-402-83, OST 3-4365-79, ST ЦКБА 014-2004 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
Ti |
| GOST 977-88 |
0.13-0.19 |
≤0.03 |
≤0.03 |
0.5-1 |
17-19 |
3.8-4.5 |
11-13 |
The rest |
- |
0.13-0.35 |
0.4-0.7 |
| GOST 2176-77 |
0.13-0.19 |
≤0.03 |
≤0.03 |
0.5-1 |
17-19 |
3.8-4.5 |
11-13 |
The rest |
≤0.3 |
0.13-0.35 |
0.4-0.7 |
Fe is the basis.
According to GOST 2176-77 the chemical composition is given for steel grade 16H18N12S4TYL (EI654LK). Deviations from the norms of chemical composition are allowed: for carbon ± 0.020%; for silicon ± 0.10%; on manganese, copper, chromium and nickel ± 0.10% each; by titanium and tungsten ± 0.050% each; by vanadium, molybdenum and niobium ± 0.020% each.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
| Casting. Quenching in water from 1150-1200 °C |
| 100 |
≥245 |
≥491 |
≥15 |
≥30 |
≥275 |
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 |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |