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Characteristics for grade     30KHGSА   ( 30ХГСА )

      Grade :     30KHGSА   ( 30ХГСА )
      Substitute:   40ХФА, 35ХМ, 40ХН, 25ХГСА, 35ХГСА
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here
Grade   30KHGSА   ( 30ХГСА ):   supplier   Auremo   www.auremo.biz
Sale:   Russia +7 (812) 680-16-77 ,   Germany +49 (208) 205-83-073,     info [a] auremo.org



Chemical composition in % for grade   30KHGSА   ( 30ХГСА )
C Si Mn Ni S P Cr Cu
0.28 - 0.340.9 - 1.20.8 - 1.1max   0.3max   0.025max   0.0250.8 - 1.1max   0.3


Temperature of critical points for grade   30KHGSА   ( 30ХГСА ).
Ac1 = 760 ,      Ac3(Acm) = 830 ,       Ar3(Arcm) = 705 ,       Ar1 = 670 ,       Mn = 352


Mechanical properties under Т=20oС for grade   30KHGSА   ( 30ХГСА )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Pipe, GOST 8731-87     686   11    
Pipe cooling strain, GOST 8733-74     491   18    
Bar, GOST 4543-71 Ø 25   1080 830 10 45490Guenching 880oC, oil, Drawing 540oC, water,
Sheet trick, GOST 11269-76     490-740  20   Normalizing
Sheet trick, GOST 11269-76     1080   9  490Guenching and drawing
Sheet thin, GOST 11268-76     490-740  20   Normalizing
Sheet thin, GOST 11268-76     1080   10   Guenching and drawing


    Brinell hardness for     30KHGSА   ( 30ХГСА )   (annealing) ,       GOST 4543-71 HB 10 -1 = 229   MPa
    Brinell hardness for     30KHGSА   ( 30ХГСА )   ,     Pipe GOST 8733-74 HB 10 -1 = 229   MPa
    Brinell hardness for     30KHGSА   ( 30ХГСА )   ,     Bar GOST 10702-78 HB 10 -1 = 217   MPa
    Brinell hardness for     30KHGSА   ( 30ХГСА )   (normalize) ,     Sheet trick GOST 11269-76 HB 10 -1 = 156 - 217   MPa


Technological properties for grade   30KHGSА   ( 30ХГСА )
  Weldability: limited weldability.
 Flakes : predisposed
Temper brittleness: predisposed


Physical properties for grade   30KHGSА   ( 30ХГСА )
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 2.15   38 7850   210
100 2.11 11.7 38 7830 496  
200 2.03 12.3 37 7800 504  
300 1.96 12.9 37 7760 512  
400 1.84 13.4 36 7730 533  
500 1.73 13.7 34 7700 554  
600 1.64 14 33 7670 584  
700 1.43 14.3 31   622  
800 1.25 12.9 30   693  
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     30KHGSА   ( 30ХГСА )
Warning! Indicated both exact and nearest equivalents.
BulgariaPolandCzechia
BDSPNCSN
30ChGSA
30HGS
30HGSA
14331

Types of delivery of grade   30KHGSА   ( 30ХГСА )
B03 - Metal forming treatment. Forgings
В05 - Welding and cutting of metals., Soldering, riveting
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
В62 - Steel pipes and connecting parts to them
В71 - Low-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]

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

  30KHGSА   ( 30ХГСА ) - 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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