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          AIT S-21 Resistance Welding Electrode

          S-21 Round Tip

          The S-21 series is a fully customizable spot welding round electrode available in multiple materials.  See the drawing for an understanding of the various dimensional values and construction of this electrode.  It comes with a .125” or .250” diameter copper body.  Glidcop and copper versions are built from one piece, and essentially any A value larger than .025” diameter is acceptable in these two materials.  Tip materials of class 11 copper-tungsten, class 13 pure tungsten (W), and molybdenum (M) have the tip pressed into the shank, with standard A values for pressed materials being .062” , .093” , and .125” .  Other A values requested in pressed materials will be constructed by inserting a standard A diameter material size, and then resizing the end of the tip.  Please note that requesting non-standard A dimensions with class 11 copper-tungsten, class 13 pure tungsten, and molybdenum materials will add additional cost to the base price of the electrode.  Adding a –B to the end of the part number makes the tip brazed into the copper shank.  Adding a -P to the end of the part number makes the tip pressed into the copper shank with no brazing. Tip sizes with an A value larger than .125 are always brazed onto the copper shank.  While brazing the tip material into the shank adds some additional cost to the electrode, we highly recommend using this option, as it produces a superior electrode.  An electrode with a pressed tip and no brazing has the potential for the resistance to change due to oxidation of materials at the joint between the tip and shank.  This can lead to inconsistent welding results.  Custom materials are also available. Contact the factory for assistance at (870)-269-4367.

          Name: Company: Email: Phone: S-21- A- D- C- B- Comments: To request a quote for a standard part number, fill in the quantity desired in the box(s) next to the desired part number below. To request a quote for a custom part number, fill in the blanks in this sample part number below and indicate the quantity desired under comments. Qty S-21-11-A.063B.125C.125D1.25-P S-21-W-A.093B.250C.188D2.00-P S-21-W-A.063B.125C.125D1.25-P S-21-M-A.063B.125C.125D1.25-P S-21-11-A.093B.250C.188D2.00-P AIT Standard Part Numbers ES0411 Miyachi Part Numbers ES0413 ES0420 ES0811 ES0813 S-21-M-A.125B.250C.188D2.00-P S-21-M-A.093B.250C.188D2.00-P ES0820 ES0820A S-21-11-A1.6B3.2C.3.2D35-P S-21-M-A1.6B3.2C.3.2D35-P EH-125-00A EH-125-11A S-21-M-A3.2B6.4C5.0D56-P S-21-W-A1.6B3.2C.3.2D35-P EH-125-13A EH-250-00A S-21-W-A3.2B6.4C5.0D56-P S-21-11-A3.2B6.4C5.0D56-P EH-250-11A EH-250-13A S-21-W-A2.5B6.4C5.0D35-P S-21-M-A2.5B6.4C5.0D35-P EH-250-00S EH-250-13S S-21-3-A3.2B6.4C5.0D56.0 S-21-2-A3.2B6.4C5.0D56.0 EH-250-02A EH-250-03 S-21-2-A3.2B6.4C5.0D35.0 EH-250-02S Avio Part Numbers Brazed?- S-21-M-A.250B.250D2.5-P ES0820B
          Click image to enlarge.
           
          S-21 Resistance Welding Electrode
            

          S-21 Square Tip

          Name: Company: Email: Phone: S-21- F- D- C- B- Comments: To request a quote for a custom part number, fill in the blanks in this sample part number below and indicate the quantity desired under comments. G- Brazed?-
          Click image to enlarge.
           
          S-21 Resistance Welding Electrode
            
          
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