yes
No. Iron cannot displace Magnesium from Magnesium oxide
Copper is less reactive than Iron and hence, cannot displace Iron from any of its solutions. Anyhow, the reverse is possible ie, Iron can displace Copper from it's solution as it is more reactive than Copper.
I don't think it is edible... Edible means it can be eaten. Inedible means it cannot be eaten. An iron nail cannot be eaten, and is therefore inedible.
No. An object cannot rust unless it contains iron.
yes
Aluminum is one example of a metal that cannot be MIG welded and must be TIG welded. The limitation of MIG is usually the heat it can produce versus thickness of the material. One quarter-inch thickness is usually about as thick as you can weld with either MIG or flux-core wire feed welders. Anything else will require the heat energy available with a stick welder.
The earliest European cannon were made of iron bars welded together around a mandrel to form a tube. One end was welded shut with a plug or left open for a breechblock. The tube had iron bands welded around it. Later cannon were cast from bronze.
Ferrous; it's made out of iron.
Not reliably, no. Most so-called "wrought-iron" is mild-steel, and that can be welded.
REDBEARD ANSWER:A cracked block cannot be repaired. Either replace the engine or get rid of the car. However, if you're not certain that it's a cracked block you can check the head gasket and/or freeze plugs. In general Detroit engine blocks seem to be a little more durable than some and you don't get quite as many cracked blocks. Head gaskets however are common especially if the engine has overheated.Aluminum blocks can be repaired and welded the same as cast iron the difficulty is in the material being welded and where the crack is. Aluminum can be tig welded cast iron is more difficult as the block has to be heated to near red hot to be welded then there is a good chance the weld will not take but have done this on cast iron heads and welded with a high Nickel rod and it has held.
Sorry, an iron spring cannot be welded. I am assuming you are trying to weld two halves of a spring together...This cannot happen because metallurgicaly the spring is tempered upon completion out of one long piece of iron. No weld can mimic the temper and tensile strength of the original material. Your best bet is to fabricate a shelf to locate both halves of the spring in, thereby achieving complete height and retaining original temper.
If the rim is welded to the tire, yes. You can change it, but you have to replace both the rim and the tire which will cost a lot. If the rim is welded to the vehicle itself, no. You cannot change it. In either case, having a welded rim is technically illegal in the US if you drive it on the road. If you don't, then it's not a problem
Yes. Things weren't welded in those days, you had metal plates and they were all connected by iron rivets, three million in this case.
P. B. Keating has written: 'Evaluation of fatigue tests and design criteria on welded details' -- subject- s -: Bridges, Fatigue, Iron and steel Bridges, Welded joints
iron
E. N. Gregory has written: 'Welded repair of cracks in steel bridge members' -- subject(s): Bridges, Iron and steel Bridges, Maintenance and repair, Welded joints, Welding