Metals -> Structural steel -> Alloy structurall steel Characteristics of the material 40KHFÀ ( 40HFÀ, 40ÕÔÀ ).
Material : 40KHFÀ ( 40HFÀ, 40ÕÔÀ ) Substitute: 40Õ, 65Ã, 50ÕÔÀ, 30Õ3ÌÔ Classification : Alloy structurall steel
Chemical composition in % of the material 40KHFÀ ( 40HFÀ, 40ÕÔÀ ) . C Si Mn Ni S P Cr V Cu 0.37 - 0.44 0.17 - 0.37 0.5 - 0.8 max 0.3 max 0.025 max 0.025 0.8 - 1.1 0.1 - 0.18 max 0.3
Temperature of critical points of the grade 40KHFÀ ( 40HFÀ, 40ÕÔÀ ).
Ac1 = 760 , Ac3 (Acm ) = 800 , Ar3 (Arcm ) = 725 , Ar1 = 680 , Mn = 218
Mechanical properties under Ò=20o Ñ of the material 40KHFÀ ( 40HFÀ, 40ÕÔÀ ) .
Assortment Dimension Direct. s â s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Forging 100 - 300 615 395 15 40 540 Guenching and drawing Forging 300 - 500 615 395 13 35 490 Guenching and drawing
Brinell hardness of the material 40KHFÀ ( 40HFÀ, 40ÕÔÀ ) (annealing) , HB 10 -1 = 241 MPa
Physical properties of the material 40KHFÀ ( 40HFÀ, 40ÕÔÀ ) . 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 37 7810 100 2.12 12.1 37 466 200 2.05 12.6 37 508 300 1.99 13 36 529 400 1.82 13.3 33 563 500 1.73 13.8 31 592 600 1.66 14.2 31 621 700 1.44 14.6 30 634 800 1.35 11.8 28 664 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 40KHFÀ ( 40HFÀ, 40ÕÔÀ ) . Weldability: hard weldability. Flakes : predisposed Temper brittleness: predisposed
Specification :
Mechanical properties : s â - 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.
Èíôîðìàöèÿ âçÿòà ñ ñàéòà Ìàðî÷íèê ñòàëè è ñïëàâîâ
© 2002 - 2009 Ìîññïåöñòàëü. Âñå ïðàâà çàùèùåíû
