What is E6011 (E4311) Electrode & its meaning
E6011(E4311) is a carbon steel (mild steel) welding rod for stick welding. E6011 [E4311 as per CSA W48] electrodes are designed to be used with AC current polarity and to duplicate the usability characteristics and mechanical properties of the E6010 [E4310] classification. E6011 can also be used with DCEP (electrode positive). E6011 gives less penetration compared to the E6010 [E4310] electrodes. Arc action, slag, and fillet weld appearance are similar to those of the E6011 [E4311] electrodes.
E6011 welding rod meaning
E6011 (E4311) electrode is meant for mild steel welding. The meaning of the E6011 (E4311) electrode is:
- E Means Electrode for stick welding,
- 60 mean 60 Ksi electrode tensile strength
- 1 at third digit means the welding electrode to be used for all positions.
- 1 at fourth digit refer to electrode characteristics as per SFA 5.1.
E6011 welding rod specifications
E6011 electrode or rod specification is AWS A5.1 or ASME Section IIC SFA 5.1. The chemical and mechanical properties are specified in AWS A 5.1 specification. E6011 is the electrode classification while A 5.1 is the electrode specification. CSA 48-18 equivalent of E6011 is E4311.
E6011 chemical and mechanical properties
The chemical and mechanical properties of the E6011 (E4311) rod are given in the below table. The tensile strength of E6011 is 60 Ksi or 430 MPa minimum, Yield is 48Ksi or 330 MPa with a minimum elongation of 22 %. The toughness of E6011 is 30 ft. lbs. (tested at -20°F) or [20 J at –30°C].
E6011 (E4311) Coating type
The covering of E6011 (E4311) rods is high in cellulose. The coating type for the E6011 rod is high-cellulose potassium. Generally, the coating also contains calcium & potassium in small amounts. The coating is similar to the E6010 welding electrode but with additional coating elements of Potassium instead of sodium coating. The amount of cellulose is also kept lower side compared to the E6010 electrode, thus the E6011 arc is having less force compared to the E6010 electrode which has high cellulose elements in the coating.
Drying and storage of E6011 Rod
Drying of E6011 is not recommended due to cellulose coating. If the E6011 is baked or re-dried, the rod moisture will be out and coating will be no more effective. The storage of E6011 shall be at ambient temperature and does not require any holding oven unless working at low-temperature areas. Most of the E6011 electrodes are used as it is after opening the packet. Unused electrodes shall be kept in the same packet or designated storage area to prevent damage to the electrode coating.
Cellulosic coverings of E6011 [E4311 as per CSA W48] electrodes need moisture levels of approximately 3% to 7% for proper operation; therefore, storage or conditioning above ambient temperature may dry them too much and adversely affect their welding operation characteristics.
E6011 (E4311) Polarity
E6011 (E4311) electrode can be used with AC (Alternating current) or DCEP (Direct current electrode positive) polarity. Potassium present in the coating makes it easy to use with DCEP polarity. E6011 does not have any sodium so it can not be used with DCEN (Direct current electrode negative) polarity.
Click to learn about Types of polarity in SMAW, MIG, MAG, FCAW, TIG and SAW
E6011 (E4311) Welding rod amperage
E6011 (E4311) electrode can be run easily with low current due to its good arc start ability. The arc of E6011 is smooth and less penetrating compared to E6010. When welding with E6011 diameter 3/32 inch or 2.5 mm welding current of 40 to 80 ampere is used. For 5/32, 3/16 inch rod recommended welding amperage is shown in the below table.
E6011 (4311) vs. E6013 (E4313)
Both E6011 (E4311) and E6013 (E4313) are mild steel welding rods. The difference between E6011 and E6013 is the coating types. E6013 electrodes have low penetrating power, fast freezing slag and this may result in incomplete penetration in fillet welded joints while E6011 gives better penetration than the E6013 type. E6011 runs with AC & DCEP while E6013 can be run with AC, DCEP, and DCEN Polarity.