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 20KHGSÀ   ( 20HGSÀ,   20ÕÃÑÀ ).

Material : 20KHGSÀ   ( 20HGSÀ,   20ÕÃÑÀ )
Substitute: 30ÕÃÑÀ
Classification : Alloy structurall steel


Chemical composition in % of the material 20KHGSÀ   ( 20HGSÀ,   20ÕÃÑÀ ) .
C Si Mn Ni S P Cr Cu
0.17 - 0.230.9 - 1.20.8 - 1.1max   0.3max   0.025max   0.0250.8 - 1.1max   0.3


Temperature of critical points of the grade 20KHGSÀ   ( 20HGSÀ,   20ÕÃÑÀ ).
Ac1 = 755 ,      Ac3(Acm) = 840 ,       Ar1 = 690


Mechanical properties under Ò=20oÑ of the material 20KHGSÀ   ( 20HGSÀ,   20ÕÃÑÀ ) .
Assortment Dimension Direct. sâ sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar Æ 15   780 640 12 45690Guenching 880oC, oil, Drawing 500oC, water,


    Brinell hardness of the material   20KHGSÀ   ( 20HGSÀ,   20ÕÃÑÀ )   (annealing) ,       HB 10 -1= 207   MPa


Physical properties of the material 20KHGSÀ   ( 20HGSÀ,   20ÕÃÑÀ ) .
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       7760    


Technological properties of the material 20KHGSÀ   ( 20HGSÀ,   20ÕÃÑÀ ) .
  Weldability: without limitations.
 Flakes : not predisposed
Temper brittleness: predisposed



Specification :
Mechanical properties :
sâ - 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/(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

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

Èíôîðìàöèÿ âçÿòà ñ ñàéòà Ìàðî÷íèê ñòàëè è ñïëàâîâ


Ãëàâíàÿ | Íîâîñòè | Ìàðî÷íèê ñòàëåé | Êîíòàêòû | Îáðàòíàÿ ñâÿçü
© 2002 - 2009 Ìîññïåöñòàëü. Âñå ïðàâà çàùèùåíû
 
-12345-