For welding stainless steels G-308

Item code : G-308 Description : G-308 is a high Lime-Titania type covered electrode with a low Hydro, Austenitic structure and added some precious alloyed elements such as:

G - 308

STAINLESS STEEL WELDING ELECTRODE

AWS E308-16 /JIS D308-16
QCVN21:2012-D308


 Đặc điểm và ứng dụng:      
   
  • G-308 is a high Lime-Titania type covered electrode with excellent usability in all position welding. As its deposits austenitic weld metal which contains a suitable quantity of ferrite, its carck resistibility and weldability are especially  good.
  • For the welding of 18%Cr-8%Ni stainless steel such as AISI (SUS) 304, 305, 308. With good mechanical properties and durability, G-308 can also be used for welding structure with high loading capacity and abrasion resistibility, medical equipments, household article, tub containing chemicals, civil arts contruction, stainless banister....
  • It's easy-slag-removable, few blowhole, smoke and spatter. Its weld bead is smooth, shinny; the arc is soft, the re-striking is good and penetration is shallow...Furthermore, its heat resistiblity, corrosion resistibility and mechanical properties are good in as welded conditions.

 Typical chemical composition of (deposited) all-weld-metal (%):

C

Mn

Si
Cr

Ni

P

S

0.08 max

0.5 ~2.5

0.90 max
18 -21

9 - 11

0.04 max

0.03 max

 Typical mechanical properties of all-weld-metal

Tensile Strength ( Mpa )
       Elongation ( % )
                              Yield Strength
550min
35min
                               225min

 Size available, recommended currents (AC&DC):

Size ( mm )
Æ2.0
Æ2.5
Æ3.2
Æ4.0
Length    ( mm )
300
300
350
400
Welding Current Range (Ampe)
F
30 – 50
70 –90
90 - 120
130 – 180
V & OH
30 –50
70 –80
80 - 110
100 – 130

 Usage introduction: 

  • Keep the arcs as short as possible and chose the welding current as low as possible.
  • Weaving width should be within two and a half time of electrode's diameter. 
  • When the electrodes have absorbed moisture, dry them at 250-300oC for 60-90 minutes before use.
  • Usually, preheat is not necessary.
     
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