Chromoly Vs Steel Axles

Chromoloy tubing is made from a family of low alloy steels that contain chromium and molybdenum sae 4130 or 4140 along with the iron carbon and other elements.

Chromoly vs steel axles.

Which are the benefits to use the chromoly instead of the rcv. Hi i m going to replace my axle shaft front. What is chromoly steel. It is a steel that is stronger than carbon steel more commonly used in bike manufacturing so we can use thin wall tubing giving you a lightweight frame that will last through years of riding.

It was designed for and is used extensively in the aircraft industry due to it s high tensile. Heat both pieces of metal red hot and quench them into water the chromoly will become brittle. Chromoly is a chrome alloy steel with a medium carbon content and 8 1 1 molybdenum for strength. Given the same o d.

And wall thickness a chrome moly tube weighs the same as a mild steel tube. You may pay a little more for u s. A common misconception is that chrome moly is lighter than mild steel. In the past i red some topic where it was suggested to use the chromoly axle shafts instead of the rcv front.

They both were same. The chromium adds strength hardenability and a level of corrosion resistance to mild carbon steel though chromoly is not as corrosion resistant as stainless steel. Also in the nickel chromium molybdenum group this low alloy lower carbon grade isn t viable for drive axles tensile strength is about half of the 1040 material typically used for oe. Much of it has to do with heat treating and material composition.

One was no more brittle than the other 3. I ground a piece of chromoly and mild steel and there was no difference in spark pattern 2. The 7075 shafts are much stronger than the conventional 6061 shafts and have a slightly higher critical speed property. Made chromoly axles but it.

The practical thought process is that steel is the strongest and most cost effective material. I found the rcv at a very good price with a low delta cost respect to the chromoly alloy. Imported chromoly axles tend to differ from those made in the u s. By using lighter weight materials that have good stiffness characteristics the rpm capability is also increased.

There is an acid test you can use to determine the difference.