Chose welding electrodes

 

     Different types of welding electrodes

1. Normal welding electrodes-
2. Welding joint between Steel to Mild Steel
3. Hard Facing electrode
4. Welding electrode for Mild Steel and High chromium alloy joint

For Simply for welding purpose we generally use 7018 and 6013. 

These above two electrodes use for general purpose , This 7018 and 6013 electrodes is very must useful in rusty - dusty areas.

Applicable for -

• Vehicles bodies joint
• Ship Structure welding works
• Mechanical Structure works
• Beams and structure works

Welding Electrode 7018.

7018 = 70 and 1 and 8

Frist two digit show Tensile strength of electrode material

70= 70000 Pounds per square Inch Tensile Strength 

Third Digit show the welding position

Mainly three position of welding if

1= Stands for all positions

2= For flat and horizontal positions

4= Stands for overhead, vertical, horizontal, and flat electrode positions.

Fourth Digit show the taking current during welding

The last digit implies the coating that has been used and consequently the current that you can safely use.

AWS Chemical Composition Requirements C = 0.15 max Ni = 0.30 max M n = 1.60 max Cr = 0.20 max Si = 0.75 max Mo = 0.30 max P = 0.035 max V = 0.08 max S = 0.035 max

Deposited Chemical Composition % (Typical)
C = 0.07	M n = 0.87*	Si = 0.61
P = 0.015	S = 0.011	Ni = 0.02*
Cr = 0.03*	Mo = 0.01*	V = 0.01*

Deposited All Weld Metal Properties % (Typical) As Welded
Tensile Strength	82,670 psi
Yield Strength	69,610 psi
Elongation in 2″	30%

Welding Electrode 6013.

6013 = 60 and 1 and 3

Frist two digit show Tensile strength of electrode material

60= 60000 Pounds per square Inch Tensile Strength 

Third Digit show the welding position

Mainly three position of welding if

1= Stands for all positions

2= For flat and horizontal positions

4= Stands for overhead, vertical, horizontal, and flat electrode positions.

Fourth Digit show the taking current during welding

The last digit implies the coating that has been used and consequently the current that you can safely use.

CHEMICAL COMPOSITION

Carbon .08

Manganese .45

Silicon .18

Phosphorus .012 

Sulfur .009

MECHANICAL PROPERTIES 

Tensile Strength   68,200 PSI  470 MPA

Yield Strength      59,500 PSI  410 MPA

Elongation            28%

Sizes and recommended current range (DC<+>)

Diameter (mm) 2.6 3.2 4.0 5.0 

Length (mm) 350 350 450 450 

Amps (F) 60-90 100-120 110-160 160-220 

               (V&OH) 50-80 80-110 100-150 140-200

2. Steel to Mild steel welding electrodes-