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Characteristics for grade     21Kh2NMFA   ( 21Х2НМФА )



      Grade :     21Kh2NMFA   ( 21Х2НМФА )
      Classification :   Alloy structurall steel
      Equivalent grades:     Is absent



Chemical composition in % for grade   21Kh2NMFA   ( 21Х2НМФА )
C Si Mn Ni S P Cr Mo V Cu
0.19 - 0.230.17 - 0.370.3 - 0.70.8 - 1.2max   0.025max   0.0251.9 - 2.40.35 - 0.450.18 - 0.28max   0.25


Mechanical properties under Т=20oС for grade   21Kh2NMFA   ( 21Х2НМФА )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Sheet trick, GOST 11269-76     490-740  15   Normalizing
Sheet trick, GOST 11269-76     1130   9  390Guenching and drawing
Sheet thin, GOST 11268-76     490-740  15   Normalizing
Sheet thin, GOST 11268-76     1130   9   Guenching and drawing


    Brinell hardness for     21Kh2NMFA   ( 21Х2НМФА )   (normalize) ,     Sheet trick GOST 11269-76 HB 10 -1 = 156 - 217   MPa



Types of delivery of grade   21Kh2NMFA   ( 21Х2НМФА )
B23 - Sheets and Strips
B33 - Sheets and Strips


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]

  21Kh2NMFA   ( 21Х2НМФА ) - Alloy structurall 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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