Steel 09KH14N19V2BR (ЭИ695Р)

Designation

Name The value
Designation GOST Cyrillic 09Х14Н19В2БР
Designation GOST Latin 09X14H19B2BP
Transliteration 09H14N19V2BR
By chemical elements 09Cr14Н19W2NbB
Name The value
Designation GOST Cyrillic ЭИ695Р
Designation GOST Latin EI695P
Transliteration EhI695R
By chemical elements -

Description

09KH14N19V2BR steel is used: for the manufacture of sheet metal, pipes, superheaters and pipelines installations of ultra-high pressure with long life at temperatures up to +700 °C.

Note

Steel heat-resistant austenitic class.
The recommended maximum operating temperature for a very long time +700 °C.
The temperature of beginning of intensive scaling in air +850 °C.

Standards

Name Code Standards
Classification, nomenclature and General rules В30 GOST 5632-72
Bars and shapes В32 GOST 5949-75, TU 14-11-245-88
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90
Processing of metals by pressure. Forgings В03 ST ЦКБА 010-2004
Thermal and thermochemical treatment of metals В04 ST ЦКБА 016-2005

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V B Ti Mo Nb W Ce Y
GOST 5632-72 0.07-0.12 ≤0.02 ≤0.035 ≤2 13-15 ≤0.6 18-20 Rest ≤0.3 ≤0.2 ≤0.005 ≤0.2 ≤0.3 0.9-1.3 2-2.8 ≤0.02 ≤0.2
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
The billet in the state of delivery
≥220 ≥490 ≥38 ≥50 ≥140 -
Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air with 1140-1160 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h)
≤60 ≥216 ≥510 ≥35 ≥50 - 131-156
Bars hot rolled and forged according to GOST 5949-75. Hardening in air, 1140-1160 °C
≥215 ≥510 ≥35 ≥50 - -

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
KCU Toughness
HB Brinell hardness number

Physical characteristics

Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m a, 10-6 1/°C
20 207 8100 - 816 -
600 158 7850 244 1114 183
700 151 7800 - 1115 186
100 - 8070 137 873 159
200 - 8030 162 934 165
300 - 7980 186 988 172
400 - 7940 205 1036 166
500 - 7890 226 1078 18
800 - 7750 264 1172 187
900 - - 28 1198 19

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
R UD. the resistivity

Technological properties

Name The value
Weldability Difficult weldability of the steel. In the case of welding electrodes type e-08Х19Н10Г2МБ (stamps EA 898/21 B, etc.) to relieve residual stresses in welded assemblies: a) working at 350 °C and above; b) operating at temperatures above 350 °C, if the hardening is impractical to apply a stabilizing annealing at 850-920 °C (extract after heating the batch for at least 2 hours). To improve the overall corrosion resistance relieve residual stresses in welded assemblies used annealing welded assemblies in air, 1140-1160 °C.