J421 Welding Electrode

J421 is a carbon steel welding rod with rutile coating. It can be used for both AC and DC, and can be used for all-position welding. It has excellent welding process performance, good operating performance, easy arc ignition, stable arc, and beautiful welding seam shape.

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Chemical composition of deposited metal

project	C	Cr	Ni	Mo	Mn	Si	P	S	Cu
guarantee value	≤0.04	17.0-20.0	11.0-14.0	2.0-3.0	0.5-2.5	≤1.00	≤0.04	≤0.03	≤0.75
Example	0.030	19.01	11.82	2.46	1.01	0.68	0.025	0.015	0.08

Mechanical properties of deposited metal

project	tensile strengthRm/MPa	ElongationA（%）
Guaranteed value	≥490	≥25
Example	580	45

Reference current: (DC+ or AC)

Welding diameter（mm）	Φ2.5	Φ3.2	Φ4.0	Φ5.0
Welding length (mm)	300	350	400	400
Welding current（A）	60~90	85~120	100~160	140~200

Features:

A022 is an ultra-low carbon Cr18Ni12Mo2 stainless steel electrode with titanium-calcium type coating. The carbon content of the deposited metal is ≤0.04%. It has good heat resistance, corrosion resistance, crack resistance, and porosity resistance, and has good operating process performance. , the drug skin is red-resistant and has good strength. Can be used for both AC and DC.

Purpose:

Used for welding ultra-low carbon Cr18Ni12Mo series stainless steel structures, such as stainless steel structures of urea, synthetic fiber and other equipment. It can also be used for welding chromium stainless steel, composite steel and special steel that cannot be heat treated.

Notes:

1. The electrode must be baked at about 300-350℃ for 1 hour before welding.

2. Rust, oil, moisture and other impurities on the weldment must be removed before welding.

3. It is recommended to use a DC power supply. The current should not be too large to avoid redness and cracking of the drug skin.