Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х18Т1 |
| Designation GOST Latin |
08X18T1 |
| Transliteration |
08H18T1 |
| By chemical elements |
08Cr18Ti1 |
| Name |
The value |
| Designation GOST Cyrillic |
0Х18Т1 |
| Designation GOST Latin |
0X18T1 |
| Transliteration |
0H18T1 |
| By chemical elements |
0Cr18Ti1 |
Description
08KH18T1 steel is used: for the manufacture of structures, not exposed to shock loads and working mainly in oxidizing environments (solutions of nitric acid — used in welded structures is restricted to small sections Delta (to 3.0 mm); chemical apparatus; electric-welded pipes with a wall thickness of 1.5 mm.
Note
Steel heat-resistant and corrosion-resistant ferritic class.
Temperature intense scaling in air +900 °C.
Steel is not recommended for use for welded constructions working in conditions of impact loads. The maximum temperature stugby welded structures not lower than -20 °C.
Steel 08KH18T1 used as a substitute for steels 12KH18N9T and 12KH18N10T grades.
Standards
| Name |
Code |
Standards |
| Steel pipes and fittings to them |
В62 |
GOST 11068-81, TU 14-159-249-94 |
| Sheets and strips |
В33 |
GOST 5582-75, TU 14-134-240-88, TU 14-1-4741-89, TU 14-1-4742-89, TU 14-1-4780-90, TU 14-1-3867-84 |
| Classification, nomenclature and General rules |
В30 |
GOST 5632-72 |
| Blanks. Of the workpiece. Slabs |
В31 |
OST 3-1686-90, TU 14-1-3547-83 |
| Bars and shapes |
В32 |
TU 14-11-245-88 |
| Tape |
В34 |
TU 3-2146-90, TU 14-1-1081-74 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
W |
| GOST 5632-72 |
≤0.08 |
≤0.025 |
≤0.035 |
≤0.7 |
17-19 |
≤0.8 |
≤0.6 |
Rest |
≤0.3 |
≤0.2 |
0.6-1 |
≤0.3 |
≤0.2 |
Fe is the basis.
Mechanical properties
| σU, MPa |
d5, % |
| Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Annealing at 830-860 °C, air cooling or Normalizing at 960-1000 °C, air cooling or water |
| ≥460 |
≥30 |
| Sheet-section 3 mm. Quenching in water with 850-870 °C (indicated by the degree of deformation in %) |
| 540 |
36 |
| Heat-treated welded tubes with wall thickness up to 1.5 mm (DH=8,0-102,0 mm) as supplied |
| ≥450 |
≥28 |
| Sheet-section 3 mm. Quenching in water with 850-870 °C (indicated by the degree of deformation in %) |
| 710 |
9 |
| 790 |
3 |
| 870 |
2 |
| 890 |
2 |
| 920 |
2 |
| 980 |
2 |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
Technological properties
| Name |
The value |
| Weldability |
Limited weldability. Satisfactory mechanical properties can be obtained in welding articles having a thickness up to 2-3 mm. For automatic arc welding under flux an-26 and ANF-14 used wire SV-08Х20Н9Г7Т SV-05Х25Н12ТЮ. Steel was successfully welded argon-arc welding without filler material and with filler material of a wire from steel 10KH18N10T. For small sections, use of contact welding. |
| The temperature of forging |
Start - 950-1050 °C, the end - 720-800 °C. Cooling is performed in air. |
