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Characteristics for grade     07KH21G7АN5   ( 07Х21Г7АН5 )



      Grade :   07KH21G7АN5   ( 07Х21Г7АН5 ) (   Х21Г7АН5     ЭП222   )
      Classification :   Сryogenic structural steel
      Equivalent grades:     Is absent



Chemical composition in % for grade   07KH21G7АN5   ( 07Х21Г7АН5 )
C Si Mn Ni S P Cr N
max   0.07max   0.76 - 7.55 - 6max   0.03max   0.0319.5 - 210.15 - 0.25


Mechanical properties under Т=20oС for grade   07KH21G7АN5   ( 07Х21Г7АН5 )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 5949-75 to Ø 60   690 365 40 501270Guenching 1000 - 1050oC, air,


Physical properties for grade   07KH21G7АN5   ( 07Х21Г7АН5 )
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 2.07          



Types of delivery of grade   07KH21G7АN5   ( 07Х21Г7АН5 )
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
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]

  07KH21G7АN5   ( 07Х21Г7АН5 ) - Сryogenic structural 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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