Database of Steel and Alloy (Marochnik)

en
HOME STANDARDS METALS SEARCH BULLETIN BOARD GRADING EDUCATION IN UKRAINE CONTACTS
 
(495)
(495)
Metals -> Structural steel -> Alloy structurall steel

Characteristics of the material 25KHGS   ( 25HGS,   25 ).

Material : 25KHGS   ( 25HGS,   25 )
Substitute: 20
Classification : Alloy structurall steel


Chemical composition in % of the material 25KHGS   ( 25HGS,   25 ) .
C Si Mn Ni S P Cr Cu
0.22 - 0.280.9 - 1.20.8 - 1.1max   0.3max   0.025max   0.0250.8 - 1.1max   0.3


Temperature of critical points of the grade 25KHGS   ( 25HGS,   25 ).
Ac1 = 755 ,      Ac3(Acm) = 840 ,       Ar1 = 690


Mechanical properties under =20o of the material 25KHGS   ( 25HGS,   25 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Steel 30 690 520 25 671830Guenching 890oC, oil, Drawing 600oC, water,
Steel 80 630 400 24 671860Guenching 890oC, oil, Drawing 600oC, water,
Sheet annealed     500-700  16    
Bar 15   1080 835 10 40590Guenching 880oC, oil, Drawing 480oC, water,


    Brinell hardness of the material   25KHGS   ( 25HGS,   25 )   (annealing) ,       HB 10 -1= 217   MPa
    Brinell hardness of the material   25KHGS   ( 25HGS,   25 )   (normalize) ,       HB 10 -1= 149 - 207   MPa


Physical properties of the material 25KHGS   ( 25HGS,   25 ) .
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 2.13   35 7850   306
100 2.06 12.2 36 7830 496 338
200 1.94 13 37 7790 504 415
300 1.87 13.6 37 7760 512 501
400 1.75 14 39 7730 533 573
500 1.68 14.2 34 7690 554 660
600 1.63 14.4 32 7650 584 830
700 1.43 14.5 31 7610 622 1000
800 1.3 12.3 29   693 1100
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 25KHGS   ( 25HGS,   25 ) .
  Weldability: without limitations.
 Flakes : 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

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
Helpfull for specialists in material technology, structural engineer, mechanical engineer, metallurgy and metal trader

Top

©   2003 - 2009   All rights reserved.       About program.
The entire risk as to use of the Database of Steel and Alloy (Marochnik) content is assumed by you the user



| | | |
© 2002 - 2009 .
 
-12345-