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Characteristics for grade     15G   ( 15Г )



      Grade :     15G   ( 15Г )
      Substitute:   20Г
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here



Chemical composition in % for grade   15G   ( 15Г )
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 for grade   15G   ( 15Г ).
Ac1 = 735 ,      Ac3(Acm) = 863 ,       Ar3(Arcm) = 840 ,       Ar1 = 685


Mechanical properties under Т=20oС for grade   15G   ( 15Г )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 4543-71 Ø 25   410 245 26 55 Normalizing 880oC, air,
Sheet trick, GOST 1577-93     420   28   Normalizing
Sheet trick, GOST 1577-93     380   29   Annealing


    Brinell hardness for     15G   ( 15Г )   (cold-worked) ,       GOST 4543-71 HB 10 -1 = 207   MPa
    Brinell hardness for     15G   ( 15Г )   ,     Bar GOST 10702-78 HB 10 -1 = 163   MPa
    Brinell hardness for     15G   ( 15Г )   ,     Sheet trick GOST 1577-93 HB 10 -1 = 163   MPa


Technological properties for grade   15G   ( 15Г )
  Weldability: without limitations.
 Flakes : not predisposed
Temper brittleness: not predisposed


Physical properties for grade   15G   ( 15Г )
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       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


Equivalent steels for grade     15G   ( 15Г )
Warning! Indicated both exact and nearest equivalents.
USAGermanyEnglandEuropeanChinaSwedenBulgariaPolandCzechia
-DIN,WNrBSEN GBSSBDSPNCSN
1016
G10160
15Mn3
C14
Cm15
080M15
2S14
1.1148
С16Е
15Mn
H15Mn
HP325
2110
14G
15G
15G
15GJ
12020



Types of delivery of grade   15G   ( 15Г )
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
В71 - Low-carbon steel wire
B74 - Wire made of non-ferrous metals and their alloys


Specification :
Mechanical properties :
sв - 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

  15G   ( 15Г ) - Alloy structurall steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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