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

Characteristics of the material 20KH23N18   ( 20H23N18,   202318 ).

Material : 20KH23N18   ( 20H23N18,   202318 )
Substitute: 202313, 1525
Classification : High alloy high-temperature steel


Chemical composition in % of the material 20KH23N18   ( 20H23N18,   202318 ) .
C Si Mn Ni S P Cr
max   0.2max   1max   217 - 20max   0.02max   0.03522 - 25


Mechanical properties under =20o of the material 20KH23N18   ( 20H23N18,   202318 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bars   longitudinal 500 200 35 50 Guenching 1100 - 1150oC, air,
Sheet 1 - 4 dihedral 550   40   Guenching 1080 - 1150oC, water,
Sheet 4 - 25 dihedral 560   34   Guenching 1080 - 1130oC, water,
Pipe 212 x 60 longitudinal 500 200 35 50 Guenching 1100 - 1150oC, air,
Sheet trick     540 265 35   Guenching 1030 - 1130oC,Cooling water,


Physical properties of the material 20KH23N18   ( 20H23N18,   202318 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(mGrade) kg/m3 J/(kgGrade) Ohmm
20 2.04   13.8 7900   1000
100   14.9 15.9   538  
200   15.7        
300 1.86 16.6 18.8      
400 1.8 17.3   7760    
500 1.73 17.5   7720    
600 1.63 17.85 21.7 7670    
700 1.53 17.85   7620    
800 1.44          
900       7540    
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 20KH23N18   ( 20H23N18,   202318 ) .
  Weldability: limited weldability.



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/(mGrade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kgGrade)]
R - Electrical resistance , [Ohmm]

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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