Metals -> Structural steel -> Alloy structurall steel Characteristics of the material 15KH ( 15H, 15Х ).
Material : 15KH ( 15H, 15Х ) Substitute: 20Х Classification : Alloy structurall steel
Chemical composition in % of the material 15KH ( 15H, 15Х ) . C Si Mn Ni S P Cr Cu 0.12 - 0.18 0.17 - 0.37 0.4 - 0.7 max 0.3 max 0.035 max 0.035 0.7 - 1 max 0.3
Temperature of critical points of the grade 15KH ( 15H, 15Х ).
Ac1 = 766 , Ac3 (Acm ) = 838 , Ar3 (Arcm ) = 799 , Ar1 = 702
Mechanical properties under Т=20o С of the material 15KH ( 15H, 15Х ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Forging to 100 390 195 26 55 590 Normalizing Forging 100 - 300 390 195 23 50 540 Normalizing Bar Ж 15 690 490 12 45 690 Guenching 880o C, water, Guenching 770 - 820o C, water, Drawing 180o C, air,
Brinell hardness of the material 15KH ( 15H, 15Х ) (annealing) , HB 10 -1 = 179 MPa Brinell hardness of the material 15KH ( 15H, 15Х ) (cold-drawn, cold-worked) , HB 10 -1 = 207 MPa
Physical properties of the material 15KH ( 15H, 15Х ) . 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 2.15 44 7830 100 2.12 10.2 44 7810 496 200 1.94 11.5 43 7780 508 300 1.91 12.4 41 525 400 1.79 13 39 7710 538 500 1.7 13.5 36 567 600 1.62 14 33 7640 588 700 1.42 32 626 800 1.32 32 706 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 15KH ( 15H, 15Х ) . Weldability: without limitations. Flakes : not predisposed Temper brittleness: not 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
Top
© 2003 - 2009 All rights reserved. About program.
Информация взята с сайта Марочник стали и сплавов
© 2002 - 2009 Мосспецсталь. Все права защищены
