Does anyone have a link to a site that has a list of rods and recommendations for usage?
I see a lot of talk on different types of sticks, Do the numbers refer to size and type?
Most of the companies selling electrodes will have info on their websites....Lincoln Electric, ESAB, Hobart, Harris, etc....look up consumables.
The numbers tell what kind/style of rod and the size is listed separately. The first two digits are the tensile strength. For example, 7018 is a common rod used in industry. 70 means it's a 70K PSI tensile strength. The third digit shows what positions it can be used in. I this case 1 means any position (flat, overhead, vertical). The last digit shows welding current and rod coating. In this case 8 means it's AC or DC, Rod +, iron powder, and low hydrogen. 6010 would be 60K PSI, any position, DC, Rod +, cellulose coating.
Now it's very common to see rod packages marked 7018AC. Those can be run either AC or DC (like regular 7018), but have some slight differences in the coating to make them run better on AC. They actually work beautifully on DC, but likely wouldn't be approved for certification work....not sure about that though.
Most rods are available in 3/32, 1/8/, 5/32 etc and the normal length is 14 inches.
Lincoln puts out a lot of information you can trust:
The American Welding Society (AWS) numbering system can tell a welder quite a bit about a specific stick electrode including what application it works best in and how it should be used to maximize performance.