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Characteristics for grade     55KHGR   ( 55ХГР )



      Grade :     55KHGR   ( 55ХГР )
      Classification :   Spring structural steel
      Equivalent grades:   Go here



Chemical composition in % for grade   55KHGR   ( 55ХГР )
C Si Mn Ni S P Cr Cu B
0.52 - 0.60.17 - 0.370.9 - 1.2max   0.25max   0.035max   0.0350.9 - 1.2max   0.20.001 - 0.003


Temperature of critical points for grade   55KHGR   ( 55ХГР ).
Ac1 = 750 ,      Ac3(Acm) = 790 ,       Mn = 260


Mechanical properties under Т=20oС for grade   55KHGR   ( 55ХГР )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Rolled stock, GOST 14959-79     1270 1175 7 35 Guenching 850oC, oil, Drawing 470oC,


    Brinell hardness for     55KHGR   ( 55ХГР )   (without heat treatment) ,     Rolled stock GOST 14959-79 HB 10 -1 = 302   MPa
    Brinell hardness for     55KHGR   ( 55ХГР )   (heat treatment) ,     Rolled stock GOST 14959-79 HB 10 -1 = 269   MPa


Equivalent steels for grade     55KHGR   ( 55ХГР )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanChinaBulgaria
-DIN,WNrJIS GBBDS
H51601
58CrMnB4
SUP11A
60CrMnBA
55ChGR



Types of delivery of grade   55KHGR   ( 55ХГР )
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
В72 - Medium-high and high-carbon steel 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]

  55KHGR   ( 55ХГР ) - Spring 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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