All electrodes are classified in five basic groups.
And they are
1. mild steel
2. high-carbon steel
3. special alloy steel
4. cast iron and
5. nonferrous metal like aluminum.
Electrodes are made for use in specific positions and on many types of metals. They are designed for AC welders and DC welders. You will learn the basic of these electrodes today so keep reading.
The electrodes are classified by a symbol such as E-6010, E-7010, or E-8010 for example. The E identifies the electrode to be used for electric arc welding only. The two digits after E designate the allowable tensile strength per square inch. So if you have E-7010 it will mean 70,000 pounds per square inch that the weld will hold. Now that's a strong weld my friend. O.k. then what about the last two numbers. The third digit indicates the joint position needed for this electrode, so there will be two numbers that you will see, a 1 and a 2. The 1 will mean any position, so go a head and do some vertical up welds, over the head welds, it does not matter, it will do a great job. Now the 2 will mean you will be restricted on the positions and here they are. Horizontal or flat only, blah is that all it does? Yes so make sure you look for the 1 if you want a good all position electrode.
Now for the last number. This number will tell you all the special characteristics and they are all different by the manufacture so make sure you look on the box or ask a welder salesman at a welding store that sells this kind of stuff. The numbers range 1-8 just to let you know. Let me know if there is a special welding topic you want me to write about? I will be glad to. See you next time.
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