Que hàn điện J420–VD

Liên hệ

  • Welding low-carbon steel structures such as civil structures, formwork, etc.
  • Welded joints are ductile and easy to ignite arc.

Applied standards

  • ASME/AWS A5.1 E6010; E6011
  • JIS: D4311
  • GB: E 4311

Characteristics – applications: 

  • J420 – VD is the electrode under the group of rutile sheath. The welded joints are less defective and easy to ignite arc in which arc is stable without splashing and slags are self-blistered.  Welded joints are ductile.
  • Suitable for welding low-carbon steel under 430 ~490 Mpa load such as sectional steel structures, building structures, civil welding, formwork, etc.
  • Welding at all positions including vertical welding from top to bottom

Chemical composition (%):

C Mn Si P S
Required Not required ≤ 0.04 ≤ 0.035
Obtained 0.032 0.016

Mechanical property of weld metal:

Yield strength
(Mpa)
Tensile strength
(Mpa)
Elongation
(%)
impact value
(J)
Required ≥ 331 ≥ 414 ≥ 17 Not required
Obtained 390 480 22 Room temperature: 55

Instructions for use:

  • Clean oil, grease and dust before welding
  • If the electrode is wet, dry it at 70 ~100 C for 30 ~60 minutes before welding
  • Process welding edges as regulated
  • Select appropriate welding current to avoid possible defects
  • Use AC or DC± power
  • Size of the electrode and used current:
Diameter (mm) Φ 3.2 Φ 4.0 Φ 5.0
Length (mm) 350 400 400
Amperage (A) Flat welding 110~130 160~210 210~250
Vertical welding & Bare welding 90~120 130~180 180~230