4/20/2023 0 Comments Welding 4130 standard notes![]() ![]() But, you purchase the good stuff, the stuff you can actually use and abuse hehe you will find that most of the stuff is made of 4130 chromalloy steel, so in other words, when it comes to BMX, 1020 is bad, and 4130 is good. Now, go to K-Mart or Wal-Mart, and most of the BMX bikes there are made of 1020 high tensile steel (which is what most of us use here in the shop). I have been riding BMX bikes (yeah, the "little kids' bikes") for a few years, but the kind I ride are super expensive hehe. I am taking fab/weld here at Lane Community College in Eugene, OR, USA, and I need to know (because of a friendly debate on a message board, and for general knowledge) what do the numbers stand for in "4130 Chromalloy". Several threads were merged please forgive repetitiveness, chronology errors, or perceived disrespect towards earlier responses - they probably weren't there then :-) Seamless Mechanical Steel Tubing (American Society for Testing and Materials) Mark L. If it is tubing you are referring to the typical properties I can provide you: they are easily obtained by looking at ASTM A519 Properties of 4130 vary according to their process routine the method by which the item was produced. So if you look in Matweb or Efunda under "steels" or search under "4130 steel", your efforts will likely be more fruitful.Ī. ![]() Richard, remember that 4130 is a chromium-molybdenum steel.
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