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Characteristics for grade     KhN70VMYuT   ( ХН70ВМЮТ )

      Grade :   KhN70VMYuT   ( ХН70ВМЮТ ) (   ЭИ765   )
      Classification :   Hidh-temperature or heat-resistant alloy
      Equivalent grades:     Is absent



Chemical composition in % for grade   KhN70VMYuT   ( ХН70ВМЮТ )
Fe C Si Mn Ni S P Cr Mo W TiAl Cu B
max   30.01 - 0.16max   0.6max   0.565.02 - 76.29max   0.02max   0.0214 - 163 - 54 - 61 - 1.41.7 - 2.2max   0.07max   0.01
Comment: Ni is a basis; the percentage of Ni is given approximately.


Mechanical properties under Т=20oС for grade   KhN70VMYuT   ( ХН70ВМЮТ )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar   longitudinal 1030 670 28 26800Heating 1150oC, 3h,Cooling oil, Ageing 800oC, 20h,Cooling air,


    Brinell hardness for     KhN70VMYuT   ( ХН70ВМЮТ )   ,       HB 10 -1 = 277 - 302   MPa


Technological properties for grade   KhN70VMYuT   ( ХН70ВМЮТ )
  Weldability: hard weldability.


Physical properties for grade   KhN70VMYuT   ( ХН70ВМЮТ )
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 2.26     8600   1330
100 2.21 12.2 9.2 8570   1340
200 2.15 12.65 12.6 8540   1350
300 2.09 13.2 16.7 8510   1360
400 2.02 13.6 19.2 8470   1360
500 1.96 14.1 23 8430   1370
600 1.9 14.55 25.9 8390   1470
700 1.82 15.1 29.3 8340   1480
800   15.8   8290    
900       8240    
T E 10- 5 a 10 6 l r C R 10 9


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

  KhN70VMYuT   ( ХН70ВМЮТ ) - 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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