It was designed for and is used extensively in the aircraft industry due to it s high tensile.
Chromoly vs mild steel price.
Far higher in price than steel or aluminum are more exotic materials such as titanium and carbon fiber.
And wall thickness a chrome moly tube weighs the same as a mild steel tube.
The first and most often heard myth is that chromoly is lighter than mild steel this is terribly incorrect.
Chromoly steel is often used when more strength is required than that of mild carbon steel though it often comes at an increase in cost.
Also steel is reliable.
The docol tubes have slightly lower yield strength but higher tensile strength.
It is from this view point that i will present facts to debunk some of the myths between 4130 chromoly and 1018 mild steel chopper frames.
For all measurable purposes 4130 and 1018 weigh the same at 491 lbs.
The addition of chromium to steel improves strength and corrosion resistance and the molybdenum increases material toughness.
Chromoly falls under the the aisi 41xx designations and it is important to be aware of the different properties and applications of chromoly steel when deciding which material you need.
The elongation values of the docol tubes are better than in the 4130 chrom moly tubes.
It fails in a predictable way bending before it breaks.
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.
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.
Chromoly 4130 is a low alloy steel containing chromium molybdenum iron carbon and other alloying elements.
The docol tubes showed a better behavior at fracture compared to the crmo tubes.
The mechanical properties of the docol 800 dp tubes are very similar to the 4130 chrome moly tubes.
A common misconception is that chrome moly is lighter than mild steel.
Chrome moly is the abbreviation for chromium molybdenum and it is an alloy steel.
4130 chromoly tubing also has a smooth interior and exterior finish that resists scaling and oxidation.
