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Characteristics for grade     30G2   ( 30Г2 )

      Grade :     30G2   ( 30Г2 )
      Classification :   Alloy structurall steel
      Equivalent grades:   Go here



Chemical composition in % for grade   30G2   ( 30Г2 )
C Si Mn Ni S P Cr Cu
0.26 - 0.350.17 - 0.371.4 - 1.8max   0.3max   0.035max   0.035max   0.3max   0.3


Mechanical properties under Т=20oС for grade   30G2   ( 30Г2 )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 4543-71 Ø 25   590 345 15 45 Guenching 880oC, air, Drawing 600oC, air,


    Brinell hardness for     30G2   ( 30Г2 )   (annealing) ,       GOST 4543-71 HB 10 -1 = 207   MPa


Technological properties for grade   30G2   ( 30Г2 )
 Flakes : weakly predisposed
Temper brittleness: predisposed


Equivalent steels for grade     30G2   ( 30Г2 )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceEnglandEuropeanItalyChinaBulgariaPolandCzechia
-DIN,WNrJIS AFNORBSEN UNIGBBDSPNCSN
1132
1330
1330H
G11320
G13300
1.1165
28Mn6
30Mn5
36Mn5
SCMn2
SMn423H
SMn433
SMn438
35M5
40M5
120M36
150M36
En15
En15A
1.1170
28Mn6
28Mn6
C28Mn
30Mn2
30G2
30GL
30G2
13141

Types of delivery of grade   30G2   ( 30Г2 )
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling


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

  30G2   ( 30Г2 ) - 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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