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Characteristics for grade     NKH9   ( НХ9 )



      Grade :   NKH9   ( НХ9 ) (   ХромельК   )
      Classification :   Nickel alloys
      Equivalent grades:     Is absent



Chemical composition in % for grade   NKH9   ( НХ9 )
Ni+Co Fe C Si Mn S P Cr CoAl Cu As Pb Mg Sb Bi Impurity
87.4 - 91.1max   0.3max   0.2max   0.4max   0.3max   0.01max   0.0038.5 - 100.4 - 1.2max   0.15max   0.25max   0.002max   0.002max   0.05max   0.002max   0.002 all 1.4
Comment: Ni+Co is a basis; the percentage of Ni+Co is given approximately.


Mechanical properties under Т=20oС for grade   NKH9   ( НХ9 )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
soft     600-700  34-45   
hard     1100   3    


    Brinell hardness for     NKH9   ( НХ9 )   ,     soft HB 10 -1 = 150 - 200   MPa
    Brinell hardness for     NKH9   ( НХ9 )   ,     hard HB 10 -1 = 300   MPa


Technological properties of the material   NKH9   ( НХ9 ) .
        Melting temperature : 1435   °C
        Annealing temperature : 800 - 850   °C
        Casting temperature : 1550   °C


Physical properties for grade   NKH9   ( НХ9 )
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   12.8   8700    



Types of delivery of grade   NKH9   ( НХ9 )
B51 - Non-ferrous metals, including rare metals, and their alloys
B74 - Wire made of non-ferrous metals and their alloys


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]

  NKH9   ( НХ9 ) - Nickel alloys: 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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