Metals -> High-temperature or heat-resistant steel and alloy -> High alloy high-temperature steel Characteristics of the material 20KH23N18 ( 20H23N18, 20Х23Н18 ).
Material : 20KH23N18 ( 20H23N18, 20Х23Н18 ) Substitute: 20Х23Н13, 15Х25Т Classification : High alloy high-temperature steel
Chemical composition in % of the material 20KH23N18 ( 20H23N18, 20Х23Н18 ) . C Si Mn Ni S P Cr max 0.2 max 1 max 2 17 - 20 max 0.02 max 0.035 22 - 25
Mechanical properties under Т=20o С of the material 20KH23N18 ( 20H23N18, 20Х23Н18 ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Bars longitudinal 500 200 35 50 Guenching 1100 - 1150o C, air, Sheet 1 - 4 dihedral 550 40 Guenching 1080 - 1150o C, water, Sheet 4 - 25 dihedral 560 34 Guenching 1080 - 1130o C, water, Pipe Ж 212 x 60 longitudinal 500 200 35 50 Guenching 1100 - 1150o C, air, Sheet trick 540 265 35 Guenching 1030 - 1130o C,Cooling water,
Physical properties of the material 20KH23N18 ( 20H23N18, 20Х23Н18 ) . 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 2.04 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, 20Х23Н18 ) . Weldability: limited weldability.
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
Top
© 2003 - 2009 All rights reserved. About program.
Информация взята с сайта Марочник стали и сплавов
© 2002 - 2009 Мосспецсталь. Все права защищены
