Chrome Moly Tubing - This 4130 Tubing is Strong

What is Chrome Moly at all? Well first off, if you were just on the Internet for chrome molybdenum steel, I told you that the correct spelling is actually telling chromoly. Chromoly is like steel on steroids. It contains chromium and molybdenum, a dash of carbon and especially iron.

The most common type of chromoly tubing is 4130th Here's what means, 4130: The American Iron and Steel Institute (AISI) has a numbering system that uses 4 numbers to categorize steel.

The first numbershows the main alloying element.

Take Carbon 1010, for example. The 1 means plain carbon steel. The second number indicates the approximate percentage of the main alloying element. In the case of mild carbon steel, the outcome is zero, because there are no major alloying element. The third and fourth numbers indicate the carbon content of steel.

In the case of 1010 steel show you that the approximately 0.1% carbon steel that contains 0.1% or pointone percent carbon.

OK allows view of 4130 chromoly.

The 41 in 4130 indicate the main alloying elements are chromium and molybdenum, and that the steel contains about 1% chromium and molybdenum combined. The last 2 digits indicate 0.3% carbon.

The reason 4130 chromoly is so freakin much and the reason it takes so good when used in aircraft, bicycles, dragsters, etc., because the combination of chromium, molybdenum and carbon, normalized with appropriate heat treatment,4130 chromoly tubing to give a combination of strength, toughness and ductility.

4130 chromoly tubing has great qualities and great strength to weight ratio. The trick is not to screw that, if you weld.

There are some purists are, insist that gas welding is the only way to go for the welding chromoly tubing for small planes. The idea is that the slow heating and slow cooling that is a part of the gig with gas welding, is necessary and if the gas welded tube 4130, itKind of stress is relieved at the same time.

But feel with all the available data on TIG welding 4130 chromoly tubing without the need to reduce stress in enough for me, is more than TIG welding. Even for small aircraft

I thought, be sure to only set guidelines, weld and I do not use 4130 filler rod.