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Characteristics for grade     KhN77TYuR   ( ХН77ТЮР )

      Grade :   KhN77TYuR   ( ХН77ТЮР ) (   ЭИ437Б     ХН77ТЮР-ВД     ЭИ437Б-ВД   )
      Classification :   Hidh-temperature or heat-resistant alloy
      Equivalent grades:   Go here




Chemical composition in % for grade   KhN77TYuR   ( ХН77ТЮР )
Fe C Si Mn Ni S P Cr Ce TiAl B Pb
max   1max   0.07max   0.6max   0.470.076 - 77.4max   0.007max   0.01519 - 22max   0.022.4 - 2.80.6 - 1max   0.01max   0.001
Comment: Ni is a basis; the percentage of Ni is given approximately.


Mechanical properties under Т=20oС for grade   KhN77TYuR   ( ХН77ТЮР )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Sheet, GOST 24982-81 to 3.9   930   20   Guenching 1080 - 1120oC,Cooling water, Ageing 750oC, 5h,
Bar, GOST 23705-79   longitudinal 740 620 15 20400Guenching 1080oC, 8h, air, Ageing 700oC, 16h, air,


    Brinell hardness for     KhN77TYuR   ( ХН77ТЮР )   (quenching) ,     Bar GOST 23705-79 HB 10 -1 = 255 - 321   MPa


Technological properties for grade   KhN77TYuR   ( ХН77ТЮР )
  Weldability: hard weldability.


Physical properties for grade   KhN77TYuR   ( ХН77ТЮР )
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 1.96   12.6 8200    
100   12.67 13.9 8180   1247
200   12.9 15.6 8140   1262
300   13.3 17.2 8110   1282
400   13.8 18.8 8070   1300
500   14.2 20.9 8040   1308
600 1.57 14.6 23.5 8000   1288
700 1.47 15.1 25.1 7960   1272
800 1.28 15.5 28.2 7920   1253
900   16.2 31.1 7870   1232
1000   16.8        
T E 10- 5 a 10 6 l r C R 10 9



Equivalent steels for grade     KhN77TYuR   ( ХН77ТЮР )
Warning! Indicated both exact and nearest equivalents.
GermanyJapan
DIN,WNrJIS
2.4952
NiCr20TiAl
NCF80A


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

  KhN77TYuR   ( ХН77ТЮР ) - Hidh-temperature or heat-resistant alloy: 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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