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Characteristics for grade     31KH19N9MVBT   ( 31Х19Н9МВБТ )

      Grade :   31KH19N9MVBT   ( 31Х19Н9МВБТ ) (   3Х19Н9МВБТ     ЭИ572   )
      Classification :   High alloy high-temperature steel
      Equivalent grades:   Go here



Chemical composition in % for grade   31KH19N9MVBT   ( 31Х19Н9МВБТ )
C Si Mn Ni S P Cr Mo W Nb Ti
0.28 - 0.35max   0.80.8 - 1.58 - 10max   0.02max   0.03518 - 201 - 1.51 - 1.50.2 - 0.50.2 - 0.5


Mechanical properties under Т=20oС for grade   31KH19N9MVBT   ( 31Х19Н9МВБТ )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 5949-75   longitudinal 590 295 30 40 Heating 1140 - 1180oC, water, Ageing 750 - 800oC, 15h, air,
Forging   longitudinal 700 300 35 40600Heating 1180oC, water, Ageing 800oC, 15h, air,
Forging   tangent 700 300 27 30400Heating 1180oC, water, Ageing 800oC, 15h, air,


Technological properties for grade   31KH19N9MVBT   ( 31Х19Н9МВБТ )
  Weldability: hard weldability.


Physical properties for grade   31KH19N9MVBT   ( 31Х19Н9МВБТ )
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m
20 2.05     7960    
100     15.1     850
200     16.3     900
300 1.9   18.4     980
400 1.85 16.02 20.05     1020
500 1.79 16.37 21.7     1080
550 1.75          
600 1.7 16.75 23.4     1100
650 1.65          
700 1.6 16.97 25.1     1150
800   17.94        
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     31KH19N9MVBT   ( 31Х19Н9МВБТ )
Warning! Indicated both exact and nearest equivalents.
USA
-
S63198
S63199


Specification :
Mechanical properties :
sв - Tensile strength , [MPa]
sT - Yield stress, [MPa]
d5 - Specific elongation at fracture , [ % ]
y - Reduction of area , [ % ]
KCU - Impact strength , [ kJ / m2]
HB - Brinell hardness , [MPa]

Physical properties :
T - Test temperature , [Grade]
E - Young modulus , [MPa]
a - Coefficient of linear expansion (range 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

  31KH19N9MVBT   ( 31Х19Н9МВБТ ) - High alloy high-temperature steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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