Database of Steel and Alloy (Marochnik)

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Metals -> High-temperature or heat-resistant steel and alloy -> High alloy high-temperature steel

Characteristics of the material 40KH9S2   ( 40H9S2,   40󧎆 ).

Material : 40KH9S2   ( 40H9S2,   40󧎆 )
Classification : High alloy high-temperature steel


Chemical composition in % of the material 40KH9S2   ( 40H9S2,   40󧎆 ) .
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 of the grade 40KH9S2   ( 40H9S2,   40󧎆 ).
Ac1 = 900 ,      Ac3(Acm) = 970 ,       Ar3(Arcm) = 970 ,       Ar1 = 810


Mechanical properties under =20o of the material 40KH9S2   ( 40H9S2,   40󧎆 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
      750 450 15 35 Annealing 850 - 870oC, air,


Physical properties of the material 40KH9S2   ( 40H9S2,   40󧎆 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m稧rade) kg/m3 J/(kg稧rade) Ohm穖
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


Technological properties of the material 40KH9S2   ( 40H9S2,   40󧎆 ) .
  Weldability: is not used.
 Flakes : not predisposed
Temper brittleness: predisposed



Specification :
Mechanical properties :
s - 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稧rade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg稧rade)]
R - Electrical resistance , [Ohm穖]

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

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
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