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

Characteristics of the material 20KH25N20S2   ( 20H25N20S2,   20Х25Н20С2 ).

Material : 20KH25N20S2   ( 20H25N20S2,   20Х25Н20С2 )
Classification : High alloy high-temperature steel


Chemical composition in % of the material 20KH25N20S2   ( 20H25N20S2,   20Х25Н20С2 ) .
Fe C Si Mn Ni S P Cr Mo W V Ti Cu
46.045 - 56max   0.22 - 3max   1.518 - 21max   0.02max   0.03524 - 27max   0.3max   0.2max   0.2max   0.2max   0.3


Mechanical properties under Т=20oС of the material 20KH25N20S2   ( 20H25N20S2,   20Х25Н20С2 ) .
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar Ж 60   590 295 35 50 Guenching 1100 - 1150oC, air,
Sheet thin     490   35   Guenching 1050 - 1100oC,Cooling water,


Physical properties of the material 20KH25N20S2   ( 20H25N20S2,   20Х25Н20С2 ) .
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       7720    
100   16.1 15 7680    
200            
300            
400            
500     22      
600   17.8 24      
700   17.8 25      
800   18.1 27 7440    
900   18.5 29 7390    
1000   18.8        
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 20KH25N20S2   ( 20H25N20S2,   20Х25Н20С2 ) .
Temper brittleness: predisposed



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

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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