Characteristics of the material 30G2 ( 30G2, 30Г2 ).
Material :
30G2 ( 30G2, 30Г2 )
Classification :
Alloy structurall steel
Chemical composition in % of the material 30G2 ( 30G2, 30Г2 ) .
C
Si
Mn
Ni
S
P
Cr
Cu
0.26 - 0.35
0.17 - 0.37
1.4 - 1.8
max 0.3
max 0.035
max 0.035
max 0.3
max 0.3
Mechanical properties under Т=20oС of the material 30G2 ( 30G2, 30Г2 ) .
Assortment
Dimension
Direct.
sв
sT
d5
y
KCU
Heat treatment
-
mm
-
MPa
MPa
%
%
kJ / m2
-
Bar
Ж 25
590
345
15
45
Guenching 880oC, air, Drawing 600oC, air,
Brinell hardness of the material 30G2 ( 30G2, 30Г2 ) (annealing) ,
HB 10 -1= 207 MPa
Technological properties of the material 30G2 ( 30G2, 30Г2 ) .
Flakes :
weakly predisposed
Temper brittleness:
predisposed
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]
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