Meaning of E6013 Welding Rod
SMAW/ Stick electrode E6013 as per AWS SFA 5.1 or E4313 as per SFA 5.1M or CSA W48 is the most widely used stick welding electrodes for sheet metal, general fabrication & structural welding work. E6013 [E4313] electrodes, is very similar to the E6012 [E4312] electrodes but E6013 is having distinct differences in coating, slag formation & welding polarity.
E6013 electrodes have low penetrating power, fast freezing slag and this may result in incomplete penetration in fillet welded joints.
E6013 [E4313] electrodes arc is quieter and the bead surface smoother with a finer ripple profile. The usability characteristics of E6013 [E4313] electrodes vary slightly from brand to brand. Some brands are recommended for sheet metal applications where their ability to weld satisfactorily in the vertical welding position with downward progression is an advantage.
Covering type of E6013 Electrode
E6013 electrode flux coating contains rutile, cellulose, ferromanganese, potassium silicate as a binder, and other siliceous materials. The potassium compounds permit the electrodes to operate with ac at low amperages and low open-circuit voltages. During the burning of coating, the flux coating of E6013 will mainly create carbon dioxide (CO2).
Difference between E6012 & E6013
The main difference between the E6012 and E6013 electrodes is that the E6012 covering contains sodium, while the covering of E6013 contains potassium. Both E6012 & E6013 run under direct current (DC+) but only the E6013 is suitable for running under alternative current (AC) & DCEN. Working with a constant current is recommended to counterbalance the unsteadiness of the welder’s hand.
With a high proportion of titanium dioxide (also called titania) the rutile electrode gives a smooth bead surface, easily removal slag and a smooth arc.
E6013 electrode Specification & classification
E6013 electrodes are classified according to ASME Section IIC, 5.1 Specification for Carbon steel electrodes for Shielded metal arc welding or E4313 as per CSA W48 or SFA 5.1M.
Similar to other welding electrodes, each digit in E6013 electrode have its own meaning. These digit gives very valuable information about this electrode as given below:
- E stands for Electrodes for SMAW or stick welding.
- The next two digits i.e. 60 indicate the tensile strength of weld deposit is 60 KSI or 60000psi.
- The next digit 1 indicates it is all position electrode which mean F, V, OH, H positions. Where F = Flat, H = Horizontal, H-fillet = Horizontal fillet, V = Vertical and OH mean Overhead position.
- The last digit 3 indicates it is a High titania potassium and can be used with only DCEP, DCEN & AC polarity.
Charpy V-Notch Impact (toughness) Requirements for E6013 type electrode
Charpy V-Notch or Toughness requirements are not specified for E6013 types electrodes in ASME Section IIC. So, there is no requirements can be placed on the electrode manufacturer & these electrodes are not designed for low temperature applications.
E6013 Welding electrode Polarity
E6013 electrodes are can be used with DCEP, DCEN & AC polarity
Storage & Baking/ reconditioning of E6013 Electrode
After opening the E6013 electrode packing, store the electrodes at 60°F to 100°F and below 50% relative humidity or in a holding oven at 100°F to 120°F (At ambient temperature. E6013 types electrodes should be baked/ Reconditioning at temperature of 275°F ± 25°F [135°C ± 15°C] for 1 hour.
Selection of current for E6013 Electrode
The correct welding amperage (current) setting mainly depends on the electrode diameter used. Below tables gives the recommended welding amperage for E6013 electrode diameter 3/32, 1/8, 5/32, 3/16, 7/32 & 1/4 inch sizes.