Steel 03Х18Н12 (000Х18Н12)

Designation

Name The value
Designation GOST Cyrillic 03Х18Н12
Designation GOST Latin 03X18H12
Transliteration 03H18N12
By chemical elements 03Cr18Н12
Name The value
Designation GOST Cyrillic 000Х18Н12
Designation GOST Latin 000X18H12
Transliteration 000H18N12
By chemical elements 000Cr18Н12

Description

03Х18Н12 steel is used: for the manufacture of welded equipment operating in environments of increased aggressiveness (nitric acid, nitrate environments, acetic acid, alkaline solutions and salts); heat exchangers, muffles, pipes, fittings furnace fittings; spark electrodes incendiary spark; the electronics industry; nets with square mesh used for the control and separation of materials by particle size, filtration of liquids, gases and other purposes; cold-rolled strip intended for deep drawing products, electronic industry.

Note

Steel corrosion resistant austenitic class.

Standards

Name Code Standards
Tape В34 GOST 4986-79, TU 14-1-3502-82, TU 14-1-3386-82
Sheets and strips В33 GOST 5582-75, TU 14-105-451-86, TU 14-1-4353-87
Classification, nomenclature and General rules В30 GOST 5632-72
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-1046-74, TU 14-1-1924-76
Welding and cutting metals. Soldering, riveting В05 TU 14-1-656-73
Bars and shapes В32 TU 14-11-245-88
Wire, steel, alloy В73 TU 14-173-64-95
Steel pipes and fittings to them В62 TU 14-3-1120-82
Mesh metal В76 TU 14-4-507-99

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N V Ti Mo W O
TU 14-1-656-73 ≤0.03 ≤0.02 ≤0.03 ≤0.4 17-19 ≤0.4 11.5-13 Rest ≤0.2 ≤0.03 ≤0.2 ≤0.005 ≤0.3 ≤0.2 ≤0.006
TU 14-1-4353-87 ≤0.03 ≤0.02 ≤0.03 ≤0.4 17-19 ≤0.4 11.5-13 Rest ≤0.3 - ≤0.2 ≤0.005 ≤0.3 ≤0.2 -
GOST 5582-75 ≤0.03 ≤0.02 ≤0.03 ≤0.4 17-19 ≤0.4 11.5-13 Rest ≤0.3 ≤0.03 ≤0.2 ≤0.005 ≤0.3 ≤0.2 ≤0.006
Fe is the basis.
According to GOST 5582-75 the chemical composition is given for steel grade 03H18N12-VI with nitrogen and oxygen restriction (at the request of the consumer).
According to GOST 4986-79 in the steel grade 03H18N12-VI the mass fraction of oxygen should not exceed 0.006%, nitrogen 0.030%, copper 0.20%.
According to TU 14-1-656-73 the chemical composition is given for steel grade 03H18N12.
According to TU 14-1-4353-87, the chemical composition is given for steel 03Х18Н12-ВИ.

Mechanical properties

Section, mm σU, MPa d5, % d4 y, %
Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79 on delivery
0.2-2 ≥740 - ≥5 -
0.2 ≥740 - ≥3 -
Cold-rolled steel strip of 0.05-2.00 mm according to GOST 4986-79. Quenching in water or air from 1050-1080 °C (samples)
0.2-2 ≥390 - ≥40 -
0.2 ≥390 - ≥20 -
Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Without heat treatment
- ≥740 ≥12 - -
Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Quenching in water or air from 1050-1080 °C
- ≥390 ≥40 - -
Bars hot rolled and forged on the other 14-1-656-73. The longitudinal samples. Quenching in water from 1000-1050 °C
≥392 ≥50 - ≥65

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
d4 Elongation after rupture
y The relative narrowing

Technological properties

Name The value
Microstructure The content of ferritic phase in rods with a diameter or a side of a square of 80 mm or more must not exceed 0.5 points (1-2 %) Rods with a diameter or side of less than 80 mm and the strip is not subjected to a determination of the ferritic phase.