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 Post subject: Pure Iron
PostPosted: Sat Mar 03, 2012 11:02 am 
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Location: Connersville, Indiana
Does anyone have any personal experience with it? I sure don't, plenty of experience with it's alloys though. I've read it is very soft, just wondering how it would weld and machine. Does anyone know of any use for the pure stuff?

Bill


Last edited by BBlue on Sat Mar 03, 2012 5:56 pm, edited 1 time in total.

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 Post subject: Re: Oure Iron
PostPosted: Sat Mar 03, 2012 3:59 pm 
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Perhaps you could explain what it is. Neither Google not Wikipedia returns anything for "OURE" iron. Did you mean "PURE"?


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 Post subject: Re: Pure Iron
PostPosted: Sat Mar 03, 2012 5:57 pm 
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What's "OURE" iron?

Bill :mrgreen:


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 Post subject: Re: Pure Iron
PostPosted: Sat Mar 03, 2012 6:08 pm 
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Iron (Fe) is used in steel making but requires other component to make it useful. By itself, I am not sure what use it has. You can seach Pig Iron for more info.


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 Post subject: Re: Pure Iron
PostPosted: Sat Mar 03, 2012 8:37 pm 
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Pig iron has already been smelted in a furnace and contains a high carbon content. I don't know of any direct uses for pure iron.

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 Post subject: Re: Pure Iron
PostPosted: Sat Mar 03, 2012 10:56 pm 
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Quote:
I don't know of any direct uses for pure iron.


Maybe as a vitamin supplement :?:

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 Post subject: Re: Pure Iron
PostPosted: Sat Mar 03, 2012 11:25 pm 
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I used to machine cast iron pistons for commercial A/C compressors about 30 years ago. Dusty nasty mess. We had to use ceramic inserts to cut with. Carbide eroded too quickly. Don't use coolant - you'll have mud all over the place.

Weding cast iron is very tricky (I.E. engine blocks). I'm not a pro welder, but I know you have to pre-heat it before attemping a weld, and the success rate is very low. Brazing is a better option


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 Post subject: Re: Pure Iron
PostPosted: Sun Mar 04, 2012 1:23 am 
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rx7locost wrote:
Maybe as a vitamin supplement :?:

Supplements are iron containing salts: ferrous sulfate, ferrous fumarate and ferrous gluconate.

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Last edited by skou on Sun Mar 04, 2012 1:29 am, edited 1 time in total.

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 Post subject: Re: Pure Iron
PostPosted: Sun Mar 04, 2012 1:28 am 
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Scrapper7 wrote:
I used to machine cast iron pistons for commercial A/C compressors about 30 years ago. Dusty nasty mess. We had to use ceramic inserts to cut with. Carbide eroded too quickly. Don't use coolant - you'll have mud all over the place.

Weding cast iron is very tricky (I.E. engine blocks). I'm not a pro welder, but I know you have to pre-heat it before attemping a weld, and the success rate is very low. Brazing is a better option

"Cast iron" is an alloy of iron, Fe, and carbon, C, with the carbon content greater than 2% by weight.

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 Post subject: Re: Pure Iron
PostPosted: Sun Mar 04, 2012 8:59 pm 
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BBlue wrote:
Does anyone have any personal experience with it? I sure don't, plenty of experience with it's alloys though. I've read it is very soft, just wondering how it would weld and machine. Does anyone know of any use for the pure stuff?

Bill
True wrought iron, which to the best of my knowledge has not been commercially made for many years now, is the closest material you're likely to find to "pure" iron. Other than that it is all alloys, with the next closest today probably being 1005 steel or some such very low carbon steel. I think pure iron should weld just fine, but don't believe it would machine very well at all.

Why do you ask about Iron specifically? The vast majority of metals we are familiar with are not actually "pure" but are rather some alloy of it.

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 Post subject: Re: Pure Iron
PostPosted: Sun Mar 04, 2012 10:02 pm 
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Adding to Driven5's comments, wrought iron iron found considerable use in transition of shipbuilding from wood to steel (both for framing and plating, not to mention rivets), happily so since early steels were often prone to brittle fracture - although riveted seams were some protection against that. Of course, as noted above, wrought iron isn't 'pure iron', but was the closest one got to it in an engineering sense. With better steels (and even garden variety 1010 steel is way better than the materials of old, although not necessarily very notch-tough at low temperature) the use of wrought iron faded away - especially since steel became cheaper (and better).

Wikipedea has a nice summary.

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 Post subject: Re: Pure Iron
PostPosted: Mon Mar 05, 2012 12:42 am 
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Why do you ask about Iron specifically? The vast majority of metals we are familiar with are not actually "pure" but are rather some alloy of it.

I am fascinated by iron because it is common yet we know so little about it. I sometimes wonder if I would recognize a bar of pure iron. Wikipedia says it is softer than aluminum. Almost useless in its pure form, but its alloys are indispensable. While it is true most metals are usually used in some form of alloy, they are often used in a commercially pure form. That is not true of iron.

Bill


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 Post subject: Re: Pure Iron
PostPosted: Mon Mar 05, 2012 5:31 pm 
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I'm no expert but I seem to recall from my welding class that iron doesn't even come out of the ground in pure form. Iron ore is mostly other mineral compounds that contain iron. To get pure iron you'd probably have to go through some kind of expensive extraction process.


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 Post subject: Re: Pure Iron
PostPosted: Mon Mar 05, 2012 5:35 pm 
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Well all I can say on this is thank you for answering the question. After spending a lot of time on Wikipedia after reading this thread, I have learned a lot of stuff about Iron that I previously did not know. Fascinating stuff!

Thanks!


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 Post subject: Re: Pure Iron
PostPosted: Mon Mar 05, 2012 6:16 pm 
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nick47 wrote:
I'm no expert but I seem to recall from my welding class that iron doesn't even come out of the ground in pure form. Iron ore is mostly other mineral compounds that contain iron. To get pure iron you'd probably have to go through some kind of expensive extraction process.


Pure iron is rare in nature. It is usually mined in some mineral form, either hematite, magnetite, or limonite, or one of the iron carbonate forms. The extraction process is usually some form of smelting, or heating to drive off the other compounds. It can get expensive, depending on the mineral.
:cheers:
JD Kemp
Prof Geologist Reg # 1990

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