1022 rod...

[David Schwab]

you can't use wrought iron, Joe
Gwinn said something about that, I forgot why but there was a good reason for it. cast iron either. when you start getting into electrical low carbon iron you start talking expensive....

Well that's good to know!

[David Schwab]

you can't use wrought iron, Joe
Gwinn said something about that, I forgot why but there was a good reason for it. cast iron either. when you start getting into electrical low carbon iron you start talking expensive....

Well that's good to know!

[John_H]

No luck so far, but I haven't given up yet. There are a couple more places I can call tomorrow.

[black_labb]

That's true. My guess is it would have to be cast iron or wrought iron, or something else with low carbon content. (Does anyone use pig iron for anything?) That's pretty much the only difference between iron and steel.

actualy cast iron, has around 3-4% carbon in it. where steel tends to be much less (around .2% usually). its comfusing as you think iron means its closer to pure iron, where it's not. thats why cast iron is very stiff and brittle.

http://en.wikipedia.org/wiki/Cast_iron

[Possum]

....

steel is real confusing, there is ASTM ans AISI then there are trade name alloys, I think half my brain melted researching iron and steel alloys this last year.

[EtLa]

I was curious about the studs I make so I ask my steel supplier for the certificate of analysis regarding the 3/16" cold roll rod they sell. And BTW no they don't sell C1022 rods.


Carbon, C 0.15
Iron, Fe 99.001
Manganese Mn 0.7
Phosphorous, P 0.009
Sulfur, S 0.03
Chromium Cr 0.11

I did a search on chromium vs magnetism and I found this:
http://en.wikipedia.org/wiki/Chromium
Chromium(IV) oxide (CrO2) is used to manufacture magnetic tape, where its higher coercivity than iron oxide tapes gives better performance

[David King]

Possum, you might post over at http://practicalmachinist.com in the "general" section. That's the largest collection of machinists you're likely to find on line and if they can't help you then I suspect you'll have hit a dead end. There are more than a few guitar makers over there so you won't be in totally foreign territory.

[Possum]

Etla

What is the alloy you're getting called, and who sells it?

[Joe Gwinn]

you can't use wrought iron, Joe Gwinn said something about that, I forgot why but there was a good reason for it. cast iron either. when you start getting into electrical low carbon iron you start talking expensive....

I don't recall the conversation. However, one simple reason why wrought iron would not be used is that it isn't made any more, having been replaced in commerce by ordinary mild steel in the 1018 range. One can get cast iron, but it is very stiff and brittle, having up to 5% carbon. I have no idea how well it would work as polepieces. It wouldn't be hard to make the experiment, as it would be easy to machine pole slugs from a bar of CI. I think I would try W-1 steel first, though.

[EtLa]

What is the alloy you're getting called, and who sells it?

It's C1018: ASTM A108, A510-96

Here is where i get the rods (in french only) http://www.aciermajeau.com/ but they are retailer, I don't who make the cold roll rods for them.

[Possum]

...

I think I misread the amount of carbon there, 15 points of carbon, I thought it was 1.5 points. Oh well, the chromium is surprising, hmmmmm.....

[David King]

So where is Montreux getting his 1022 slugs?

[Possum]

........

who said Montreaux's slugs are 1022?

[Dave Kerr]

From his price list:
Polepiece slug set(6) Nickel plated US$3.00 12 #1022 Steel

[David Schwab]

actualy cast iron, has around 3-4% carbon in it. where steel tends to be much less (around .2% usually). its comfusing as you think iron means its closer to pure iron, where it's not. thats why cast iron is very stiff and brittle.

http://en.wikipedia.org/wiki/Cast_iron

Well is there any source for plain iron rods or bars? I'm curious about it now.

I guess they add stuff to iron for rust resistance.