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Metals -> Structural steel -> Alloy structurall steel

Characteristics of the material 15G   ( 15G,   15 ).

Material : 15G   ( 15G,   15 )
Substitute: 20
Classification : Alloy structurall steel


Chemical composition in % of the material 15G   ( 15G,   15 ) .
C Si Mn Ni S P Cr Cu
0.12 - 0.190.17 - 0.370.7 - 1max   0.3max   0.035max   0.035max   0.3max   0.3


Temperature of critical points of the grade 15G   ( 15G,   15 ).
Ac1 = 735 ,      Ac3(Acm) = 863 ,       Ar3(Arcm) = 840 ,       Ar1 = 685


Mechanical properties under =20o of the material 15G   ( 15G,   15 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar 25   410 245 26 55 Normalizing 880oC, air,


    Brinell hardness of the material   15G   ( 15G,   15 )   (hot-rolled, annealing) ,       HB 10 -1= 170   MPa


Physical properties of the material 15G   ( 15G,   15 ) .
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       7810    
100 1.86 12.3     496  
200 1.83          
300   13.2     538  
400            
500         592  
600   14.9        
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 15G   ( 15G,   15 ) .
  Weldability: without limitations.
 Flakes : not predisposed
Temper brittleness: not 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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