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Characteristics for grade     40KH9S2   ( 40Х9С2 )

      Grade :   40KH9S2   ( 40Х9С2 ) (   4Х9С2   )
      Classification :   High alloy high-temperature steel
      Equivalent grades:   Go here



Chemical composition in % for grade   40KH9S2   ( 40Х9С2 )
C Si Mn Ni S P Cr Ti Cu
0.35 - 0.452 - 3max   0.8max   0.6max   0.025max   0.038 - 10max   0.2max   0.3


Temperature of critical points for grade   40KH9S2   ( 40Х9С2 ).
Ac1 = 900 ,      Ac3(Acm) = 970 ,       Ar3(Arcm) = 970 ,       Ar1 = 810


Mechanical properties under Т=20oС for grade   40KH9S2   ( 40Х9С2 )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 5949-75     740 440 15 35 Annealing 850 - 870oC, air,


Technological properties for grade   40KH9S2   ( 40Х9С2 )
  Weldability: is not used.
 Flakes : not predisposed
Temper brittleness: predisposed


Physical properties for grade   40KH9S2   ( 40Х9С2 )
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       7630    
100   11.1 17 7610    
200   12.7   7580    
300     20      
400   14.3   7510    
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     40KH9S2   ( 40Х9С2 )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceEnglandEuropeanItalySpainChinaBulgariaHungaryPolandRomaniaCzechiaSouth Korea
-DIN,WNrJIS AFNORBSEN UNIUNEGBBDSMSZPNSTASCSNKS
HNV3
HW3
S65007
1.4718
1.4818
G-X45CrSi9-3
X45CrSi9-3
SUH1
SUH2
X45CrSi9-3
Z45CS9
401S45
X45CrSi9-3
1.4718
X45CrSi8
X45CrSi9-3
X45CrSi8
F.3220
X45CrSi09-03
X45CrSi9-3
X4ScrSi09-03
4Cr9Si2
4Cr9Si8
ZG40Cr9Si2
4Ch9S2
4Ch9S3
X45CrSi9-3
SZ3
H9S2
45SiCr90
17115
STR1


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

  40KH9S2   ( 40Х9С2 ) - High alloy high-temperature 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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