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Characteristics for grade     25KHGSА   ( 25ХГСА )

      Grade :     25KHGSА   ( 25ХГСА )
      Substitute:   20ХГСА
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here



Chemical composition in % for grade   25KHGSА   ( 25ХГСА )
C Si Mn Ni S P Cr Cu
0.22 - 0.280.9 - 1.20.8 - 1.1max   0.3max   0.025max   0.0250.8 - 1.1max   0.3


Temperature of critical points for grade   25KHGSА   ( 25ХГСА ).
Ac1 = 755 ,      Ac3(Acm) = 840 ,       Ar1 = 690


Mechanical properties under Т=20oС for grade   25KHGSА   ( 25ХГСА )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 4543-71 Ø 15   1080 835 10 40590Guenching 880oC, oil, Drawing 480oC, water,
Sheet trick, GOST 11269-76     490-690  21   Normalizing
Sheet trick, GOST 11269-76     1030   10  490Guenching and drawing
Sheet thin, GOST 11268-76     490-690  21   Normalizing
Sheet thin, GOST 11268-76     1080   10   Guenching and drawing


    Brinell hardness for     25KHGSА   ( 25ХГСА )   (annealing) ,       GOST 4543-71 HB 10 -1 = 217   MPa
    Brinell hardness for     25KHGSА   ( 25ХГСА )   (normalize) ,     Sheet trick GOST 11269-76 HB 10 -1 = 149 - 207   MPa


Technological properties for grade   25KHGSА   ( 25ХГСА )
  Weldability: without limitations.
 Flakes : predisposed
Temper brittleness: predisposed


Physical properties for grade   25KHGSА   ( 25ХГСА )
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 2.13   35 7850   306
100 2.06 12.2 36 7830 496 338
200 1.94 13 37 7790 504 415
300 1.87 13.6 37 7760 512 501
400 1.75 14 39 7730 533 573
500 1.68 14.2 34 7690 554 660
600 1.63 14.4 32 7650 584 830
700 1.43 14.5 31 7610 622 1000
800 1.3 12.3 29   693 1100
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     25KHGSА   ( 25ХГСА )
Warning! Indicated both exact and nearest equivalents.
BulgariaPoland
BDSPN
25ChGSA
25HGS

Types of delivery of grade   25KHGSА   ( 25ХГСА )
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]

Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

  25KHGSА   ( 25ХГСА ) - 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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