When I use ER80S-D2 filler material, do I give up strength for elongation? Yes, the parent material will provide a tensile strength of approximately 95 Ksi. Due to its hardness or lack of elongation (flexibility), it is not recommended for sporting applications such as experimental airplanes, race car frames, roll cages, etc. Why do I not use 4130 filler? 4130 filler typically is used for high strength and rigid applications. Typically, you would obtain 20% elongation from this filler material after welding. This filler material will meet the strength and elongation requirements for experimental planes, racing car frames, roll cages, motorcycles and bicycle frames. What filler material do I use? Although there are several good filler materials, my recommendation would be ER80S-D2. However, it is recommended that pre-heat of 100✯ to 125✯ be used to remove parent material moisture. Do I need to pre-heat? Tubing applications do not require the normal 300✯ to 400✯ pre-heat to obtain acceptable strength. Can I weld 4130 using the TIG process? Yes, 4130 Chrome-Moly has been TIG welded in the aerospace and aircraft industries for years. These procedures are intended for sporting applications, such as experimental airplanes, racing car frames, roll cages, go-carts, bicycles, and motorcycle frames. So much, as a matter of fact, that we created this “Top 10” list of questions about 4130 with answers. We get questions regarding TIG Welding 4130 Chrome Moly all the time.
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