Depends on what youre comparing it to. Cr-Mo is often held to be the "best" steel alloy for things like bicycles.(do note that there are different kinds of Cr-Mo available) Next step down the performace ladder is Hi-Ten(high tensile) steel.
By volume there are virtually no difference in weights between the alloys, but Cr-Mo is stronger, so you can build an equally strong structure using less material, and get a lighter finished product that way.
Steel hasn't a chemical equation.
4130 chromoly
Chromoly steel is relatively lighter compared to other types of steel. It is known for its high strength-to-weight ratio, making it a popular choice for applications where both strength and weight are important considerations, such as in bicycle frames or roll cages for race cars.
People do it all the time, but you have to bake the metal to release the hydrogen after you do it. Otherwise the steel gets brittle.
That's not a test for any particular alloy at all, only a rough guide to two metals' relative hardnesses. Mild-steel cannot be hardened through, only case-hardened to give a thin, wear-resistant surface layer. Heat-treatable steels can be hardened through but hardness alone merely tells you it has been hardened, and may simply be high-carbon steel (Iron plus a small amount of carbon). If you know the metal in a particular machine can only be either untreated mild-steel or Chromoloy, then hardness will differentiate them; but if you don't know what alloys have been used, it tells you only which components have been hardened, and could be any of two or more such alloys in the machine. As for using a file as a hardness-tester.... Not with any file belonging to me or anyone else who respects their tools, you don't!
Yes, the Mike Spinner Hyper Pro model features a chromoly frame. Chromoly steel is known for its strength and durability, making it a popular choice for high-performance BMX bikes. This frame construction helps provide a balance of lightweight performance and resilience during tricks and jumps.
Yes, steel is heavy.
Chromoly (often spelled cromoly) is an abbreviation for "chromium-molybdenum steel". Chromoly is an alloy used to produce tubing for bicycle frames and race-car roll cages. It is not as lightweight as some steel alloys, but has the advantages of high tensile strength and malleability. It is also easily welded and is considerably stronger and more durable than standard (1020) steel tubing. It is also known as 4130 steel, and is composed of 0.28 to 0.33% carbon, 0.4 to 0.6% manganese, 0.8 to 1.1% chromium, 0.15 to 0.25% molybdenum, 0.04% phosphorus, 0.04% sulfur, and 0.2 to 0.35% silicon, in addition to iron. Retrieved from the link on the right
I think a freestyle bmx should be made out of steel but I've heard bmx's are made out of chromoly or alluminion, i hope that's just for racing
The finish of a product would be considered as heavy gauge steel. For instance, an espresso maker could have a heavy gauge stainless steel finish.
Chromoly is stronger in terms of tensile strength and both metals are about the same in yield or bending strength.
Offroad go-kart chassis are typically constructed using chromoly steel tubes, specifically 4130 steel, due to its high strength-to-weight ratio and durability. This material provides the necessary rigidity to withstand rough terrains while keeping the overall weight low. Alternatively, mild steel, like DOM (Drawn Over Mandrel) tubing, may also be used for budget-friendly builds, but it is heavier and less resilient than chromoly. The choice of steel ultimately depends on the desired performance, weight, and cost considerations.