Characteristics of the material 14G2 ( 14G2, 14Г2 ).
Material :
14G2 ( 14G2, 14Г2 )
Substitute:
15ХСНД
Classification :
Low alloy structural steel for welding construct
Chemical composition in % of the material 14G2 ( 14G2, 14Г2 ) .
C
Si
Mn
Ni
S
P
Cr
N
Cu
As
0.12 - 0.18
0.17 - 0.37
1.2 - 1.6
max 0.3
max 0.04
max 0.035
max 0.3
max 0.008
max 0.3
max 0.08
Temperature of critical points of the grade 14G2 ( 14G2, 14Г2 ).
Ac1 = 709 , Ac3(Acm) = 825
Mechanical properties under Т=20oС of the material 14G2 ( 14G2, 14Г2 ) .
Assortment
Dimension
Direct.
sв
sT
d5
y
KCU
Heat treatment
-
mm
-
MPa
MPa
%
%
kJ / m2
-
Rolled stock
4
470
21
Sheet
5 - 9
470
340
21
Technological properties of the material 14G2 ( 14G2, 14Г2 ) .
Weldability:
limited weldability.
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
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