J422 Welding Electrode


Chemical composition of deposited metal
projectCMnSiSPNiCrMoV
Guaranteed value≤0.100.27-0.55≤0.25≤0.030≤0.035≤0.30≤0.20≤0.30≤0.08
Example0.080.450.140.0180.0220.0300.0350.0050.004


Mechanical properties of deposited metal
ProjectTensile strengthRmRm/MPaYield StrengthRel/Rp0.2  MPaElongationA(%)Charpy V-notch impact absorption energyKV2(J)
0℃-20℃
Guaranteed value≥430≥330≥20≥27≥47
Example475390309773


Reference current
Welding diameter(mm)Φ2.5Φ3.2Φ4.0Φ5.0
Welding length(mm)300350400400
Welding current(A)60~10090~140160~210220~270

Features:

J422 is a carbon steel electrode with calcium titanium coating. It can be used for both AC and DC, and can be used for all-position welding. It has excellent welding process performance and good mechanical properties; the arc is stable, the spatter is small, the slag is easy to remove, and the arc is easy to strike again; the welding seam is beautiful in shape, the welding wave can be wide, narrow, thin, or thick, and the welding is easy and efficient. high.


Usage:

Used for welding important low carbon steel structures and low alloy steel structures with low strength levels, such as Q235, 09MnV, 09Mn2, etc.


Precautions:

Under normal circumstances, the electrode does not need to be baked before welding. When the welding rod gets wet, it must be baked at 150-170°C for 0.5-1 hour before use.


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