[QUOTE=rugbygirl;4879618]
Normally yes, black steel is pretty well just forged (heated up) steel, which can have a variety of hardnesses. The black is actually an oxide coating.
Sometimes bit-makers call “black steel” something that is actually regular steel with a slightly shiny, painted or dipped coating. I am not really sure what that is. It could be polished black steel…not sure why anyone would do that though.
Sweet iron is also very close to what we call “pig iron” which is a sloppy alloy that’s got a variety of compositions, but is mostly iron. Compared to finished steel, it is very soft, it is usually just heated up to melting point and cast (poured into a mold). Iron does have a “sweet” taste, but all the steels have a very high percentage of iron in them anyway. Now, if your sweet iron bit were to be forged into shape…it might end up turning into black steel, depending on how much carbon and other elements were in the original!
Most bits are constructed out of the same base material, mild steel. Depending on how the metals are prepared and shaped (cold rolled, hot rolled, cast, forged, drop forged, quenched, tempered, annealed, etc.) you get very different properties. The elements and composition could be identical though! It’s the size and shape of the crystal structures in the metal that change the properties.
Stainless steels have a lot of additional metals added, notably nickel and chrome. You also find aluminium bits, they are normally low quality, IME.
It is kind of weird that your horse was able to rough up a copper bit…but it is a very soft metal unless alloyed with something else (bronze is your most common copper alloy.) You’ll often see a copper wire wrapped bit, which has more inherent resistance to chomp-damage, or else copper-inlaid/laced. Some of the proprietary coatings (like Aurigan) also contain large amounts of copper. Pretty well anything with a reddish or brassy colour is going to contain a lot of copper, when you’re talking bit mouthpieces.[/QUOTE]
It’s frustrating too, because she was NOT chomping and gnawing on it. Just a few “I’m thinking” chews, that’s it. She’s worn the bit maybe a grand total of a dozen times.
I’m so sick of bit shopping! It was fun for the first 0.0005 seconds.
I think I’m going to pass on the black steel bit. It DOES look like it’s just painted on, and I’m paranoid the black stuff will flake off over time or something.
It seems like cheap crap bits are a dime a dozen these days. I have a bit that’s been in my family for 20 years, has copper rollers on it, and it’s still 100% functioning and useable. It’s been on probably close to a dozen horses, has traveled all over, been chomped and chewed on, and still looks fine. It wasn’t even that expensive, either.
At this point I’m tempted to just throw her into the 20 year old bit because at least I know she won’t wreck it with normal use! Argh. :no: