Steel 08KH18T1 (0Х18Т1)

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.