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, 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.
This is because height tensile steel is strong in nature means it is very hard to break & even cycle remain's for a very long period of time as it is manufactured. lets talk its pros & cons. Pros:- 1. It is very hard to break tensile steel. 2. Cycle remains for a long time as chances for breaking that are less. 3. This kind of steel is not easy to break. 4. Life of a cycle increase as we use this. Cons:- 1. Cycle become very heavy. 2. This kind of cycles can't easily handle by the child. 3. Its color may fake some time that effects outer appearance of cycle.
Generally speaking aluminum frames have larger diameter tubes than steel or titanium bikes, but the most obvious is to test with a magnet. If it sticks it's a steel frame. If it doesn't it's probably aluminum. Titanium frames are still so rare that you are very unlikely to buy one w/o knowing.