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Characteristics for grade     18KH11MNFB   ( 18Х11МНФБ )

      Grade :   18KH11MNFB   ( 18Х11МНФБ ) (   2Х11МФБН     ЭП291   )
      Classification :   High alloy high-temperature steel
      Equivalent grades:   Go here




Chemical composition in % for grade   18KH11MNFB   ( 18Х11МНФБ )
C Si Mn Ni S P Cr Mo V Nb
0.15 - 0.21max   0.60.6 - 10.5 - 1max   0.025max   0.0310 - 11.50.8 - 1.10.2 - 0.40.2 - 0.45


Mechanical properties under Т=20oС for grade   18KH11MNFB   ( 18Х11МНФБ )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 5949-75     740 590-73515 50590Guenching 1080 - 1130oC, air, Drawing 660 - 770oC, air,
Bar, GOST 18968-73     740 590-73515 50590Normalizing and drawing


    Brinell hardness for     18KH11MNFB   ( 18Х11МНФБ )   (annealing) ,     Bar GOST 5949-75 HB 10 -1 = 225   MPa
    Brinell hardness for     18KH11MNFB   ( 18Х11МНФБ )   (normalize, tempering) ,     Bar GOST 18968-73 HB 10 -1 = 229 - 269   MPa


Technological properties for grade   18KH11MNFB   ( 18Х11МНФБ )
  Weldability: hard weldability.


Physical properties for grade   18KH11MNFB   ( 18Х11МНФБ )
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 2.28     7850    
100 2.22 10.3 21.4   485  
200 2.13 10.6 25.1   530  
300 2.05 10.8 25.9   590  
400 1.93 11.3 26.3   667  
500 1.8 11.7 27.2   770  
600   11.8 28   900  
700   12        
800   12.4        
T E 10- 5 a 10 6 l r C R 10 9



Equivalent steels for grade     18KH11MNFB   ( 18Х11МНФБ )
Warning! Indicated both exact and nearest equivalents.
Germany
DIN,WNr
X22CrMoV12-1


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

  18KH11MNFB   ( 18Х11МНФБ ) - 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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