Metals -> Corrosion-resistant (stainless) steel -> Corrosion-resistant high-temperature steel Characteristics of the material 20KH13 ( 20H13, 20Х13 ).
Material : 20KH13 ( 20H13, 20Х13 ) Substitute: 12Х13, 14Х17Н2 Classification : Corrosion-resistant high-temperature steel
Chemical composition in % of the material 20KH13 ( 20H13, 20Х13 ) . C Si Mn Ni S P Cr 0.16 - 0.25 max 0.6 max 0.6 max 0.6 max 0.025 max 0.03 12 - 14
Temperature of critical points of the grade 20KH13 ( 20H13, 20Х13 ).
Ac1 = 820 , Ac3 (Acm ) = 950 , Ar1 = 780
Mechanical properties under Т=20o С of the material 20KH13 ( 20H13, 20Х13 ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Sheet 1 - 4 dihedral 500 20 Drawing 740 - 800o C, Sheet 4 - 25 dihedral 500 20 Drawing 680 - 780o C, Forging to 100 630 400 17 45 600 Forging to 200 630 400 16 42 550 Forging to 400 630 400 14 40 500
Brinell hardness of the material 20KH13 ( 20H13, 20Х13 ) (annealing) , HB 10 -1 = 126 - 197 MPa Brinell hardness of the material 20KH13 ( 20H13, 20Х13 ) (quenching) , HB 10 -1 = 241 MPa Brinell hardness of the material 20KH13 ( 20H13, 20Х13 ) , Forging HB 10 -1 = 197 - 248 MPa
Physical properties of the material 20KH13 ( 20H13, 20Х13 ) . 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 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, 20Х13 ) . Weldability: limited weldability. Flakes : not predisposed Temper brittleness: predisposed
Specification :
Mechanical properties : s в - Tensile strength , [MPa] s T - Yield stress, [MPa] d 5 - 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
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