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Metals -> Corrosion-resistant (stainless) steel -> Corrosion-resistant high-temperature steel

Characteristics of the material 20KH13   ( 20H13,   2013 ).

Material : 20KH13   ( 20H13,   2013 )
Substitute: 1213, 14172
Classification : Corrosion-resistant high-temperature steel


Chemical composition in % of the material 20KH13   ( 20H13,   2013 ) .
C Si Mn Ni S P Cr
0.16 - 0.25max   0.6max   0.6max   0.6max   0.025max   0.0312 - 14


Temperature of critical points of the grade 20KH13   ( 20H13,   2013 ).
Ac1 = 820 ,      Ac3(Acm) = 950 ,       Ar1 = 780


Mechanical properties under =20o of the material 20KH13   ( 20H13,   2013 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Sheet 1 - 4 dihedral 500   20   Drawing 740 - 800oC,
Sheet 4 - 25 dihedral 500   20   Drawing 680 - 780oC,
Forging to 100   630 400 17 45600 
Forging to 200   630 400 16 42550 
Forging to 400   630 400 14 40500 


    Brinell hardness of the material   20KH13   ( 20H13,   2013 )   (annealing) ,       HB 10 -1= 126 - 197   MPa
    Brinell hardness of the material   20KH13   ( 20H13,   2013 )   (quenching) ,       HB 10 -1= 241   MPa
    Brinell hardness of the material   20KH13   ( 20H13,   2013 )   ,     Forging HB 10 -1= 197 - 248   MPa


Physical properties of the material 20KH13   ( 20H13,   2013 ) .
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 2.18   23 7670   588
100 2.14 10.1 26 7660 461 653
200 2.08 11.2 26 7630 523 730
300 2 11.5 26 7600 565 800
400 1.89 11.9 26 7570 628 884
500 1.81 12.2 27 7540 691 952
600 1.69 12.8 26 7510 775 1022
700   12.8 26 7480 963 1102
800   13 27 7450    
900     28      
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 20KH13   ( 20H13,   2013 ) .
  Weldability: limited weldability.
 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/(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

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