Blueprint BP0052 has some material on welding rod and settings.
From Lincoln Electric
E6010
DC only and designed for putting the root bead on the inside of a piece of pipe, this is the most penetrating arc of all. It is tops to dig through rust, oil, paint or dirt. It is an all-position electrode that beginning welders usually find extremely difficult, but is loved by pipeline welders world-wide. Lincoln 5P+ sets the standard in this category.
E6011
This electrode is used for all-position AC welding or for welding on rusty, dirty, less-than-new metal. It has a deep, penetrating arc and is often the first choice for repair or maintenance work when DC is unavailable. The most common Lincoln product is Fleetweld® 180 for hobby and novice users. Industrial users typically prefer Fleetweld 35.
E6013
This all-position, AC electrode is used for welding clean, new sheet metal. Its soft arc has minimal spatter, moderate penetration and an easy-to-clean slag. Lincoln Fleetweld® 37 is most common of this type.
E7018
A low-hydrogen, usually DC, all-position electrode used when quality is an issue or for hard-to-weld metals. It has the capability of producing more uniform weld metal, which has better impact properties at temperatures below zero. The Lincoln products are typically Jetweld® LH-78 or our new Excalibur
® 7018.
Quote:
Storing Low Hydrogen Stick Electrodes
Low hydrogen stick electrodes must be dry to perform properly. Unopened Lincoln hermetically sealed containers provide excellent protection in good storage conditions. Opened cans should be stored in a cabinet at 250 to 300°F (120 to 150°C).
Electrodes exposed to air for less than one week; no direct contact with water. Final Re-drying Temperature 650°F to 750°F (340 to 400°C)
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