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Characteristics of the material 30KHGSN2   ( 30HGSN2,   302 ).

Material : 30KHGSN2   ( 30HGSN2,   302 ) ( 30 )
Classification : Alloy structurall steel


Chemical composition in % of the material 30KHGSN2   ( 30HGSN2,   302 ) .
C Si Mn Ni S P Cr Cu
0.27 - 0.340.9 - 1.21 - 1.31.4 - 1.8max   0.025max   0.0250.9 - 1.2max   0.3


Temperature of critical points of the grade 30KHGSN2   ( 30HGSN2,   302 ).
Ac1 = 705 ,      Ac3(Acm) = 800 ,       Mn = 321


Mechanical properties under =20o of the material 30KHGSN2   ( 30HGSN2,   302 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar     1620 1375 9 45590Guenching and drawing
Sheet thin     500-850  19   Normalizing


    Brinell hardness of the material   30KHGSN2   ( 30HGSN2,   302 )   (annealing) ,       HB 10 -1= 255   MPa


Physical properties of the material 30KHGSN2   ( 30HGSN2,   302 ) .
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 1.95   28.5 7770   440
100   10.6 29.4   0.503  
200   11.2 30.6   0.545  
300 1.8 13 31.4   0.587  
400 1.68 14.9        
500 1.35          
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 30KHGSN2   ( 30HGSN2,   302 ) .
  Weldability: hard weldability.
 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).
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