How long has electronic metal been around?
I am guessing that you are mentioning a solid metal bar versus a hollow metal bar. If the two have the same outside diameter, the solid metal bar would be stronger as what was mentioned earlier. When we discussed this in college, if you take a solid bar and a hollow bar, that have the same weight per foot, the hollow bar would have a much greater outside diameter which could make the hollow bar stronger when each bar weighs the same. The hollow bar with the larger diamter would have a much greater moment of inertia which could make it stronger.
That has to be false man that makes no sense....solid is heavier material also depends what kind of metal you are talking about I am a certified machinest............
If the material is the same, a tube or hollow bar will be stronger than a solid bar of the same weight.
Not true. Even some solid metal is stronger than other solid metal. For example, the commen solid bar is a 1045. That has I think like 50K tensiles. The 1085 I think is like 80K tensiles. More tensiles more support.
The hollow bar will not be stronger than the solid bar. But depending on its use, it may be close. If the bar is round and is used to transmit torque (like an automotive drive shaft), most of the work is done by the part farthest from the center, so the bar could be made hollow without sacrificing too much strength. And as has mentioned before, by using a larger diameter tube, you might should be able to make a stronger shaft with the same (or less) material as a solid bar. That's why auto driveshafts have been hollow for so long. In tension, or shear, I think the solid shaft would win. I am not sure about compression. Maybe someone after me will answer that.
