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Characteristics for grade     40KKHNM   ( 40КХНМ )



      Grade :     40KKHNM   ( 40КХНМ )
      Classification :   Precision alloy for elastic elements
      Equivalent grades:     Is absent



Chemical composition in % for grade   40KKHNM   ( 40КХНМ )
Fe C Si Mn Ni S P Cr Mo Co
10.74 - 18.730.07 - 0.12max   0.51.8 - 2.215 - 17max   0.02max   0.0219 - 216.4 - 7.439 - 41


Mechanical properties under Т=20oС for grade   40KKHNM   ( 40КХНМ )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Wire heat-treatment, GOST 51397-99     950 450 65    
Wire, GOST 51397-99     1450 1300 8    
Band cold-worked , GOST 14117-85     1370-1770       



Types of delivery of grade   40KKHNM   ( 40КХНМ )
B34 - Ribbons
B73 - Steel Alloy Wire


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]

  40KKHNM   ( 40КХНМ ) - Precision alloy for elastic elements: 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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