Product Details

Product Description

Mild Steel Electrodes

Description: E7018 is an excellent carbon steel electrode with iron powder low hydrogen potassium coating. It is used on both AC and DC in all position. As the coating contains iron powder, it has highly efficient welding and can reduce welding layers.

Application: Used to weld low carbon structure and low alloy steel structure., such as 16 Mn etc.
CHEMICAL COMPOSITION OF MELTING METAL(%)

C	Mn	Si	S	P
≤0.12	≤1.60	≤0.75	≤0.035	≤0.040

Reference Current

Diameter(mm)	2.5	3.2	4.0	5.0
Current	90~120	120~150	170~200	210~250

Mechanical properties of weld metal

item

Tensile strength Mpa

Yield strength Mpa

Elongation %

Impact value(J)

Below 30deg

limited

520

410

60-180

Note:
1.Before welding, it is necessary to clean the work piece and remove the impurities such as oil ,grease rust and moisture, bake the electrode at the temperature of about 350 degree centigrade for one hour.

2. The welding must be carried out under short arc and is suitable for narrow path.
3. When used DC, the electrode must be connected with positive polarity.

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