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Mangalloy, Hadfield Steel, has the composition and properties of Swedish Viking bog steel. Mangalloy has properties ideal for swords, axes, long boat rivets, helmets. Thus Hadfield steel is predated by a thousand years.
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The photo of the "mangalloy" bicycle frame here is very misleading, as it is a completely different type of steel to the high manganese Hadfield steel (11% to 15% Mn) which is the subject of this article.
That HLE steel (which stands for High Elastic Limit btw) is definitely not Hadfield steel, or even anything close to it. It is a low alloy steel containing only about 1.2% manganese with the addition of about 0.15% microalloying ingredients. That HLE steel is far closer to plain mild steel than it is to Hadfield steel.
My info comes from working with these bicycle frames. I've cold set (straightened) them, drilled and taped them for extra mount points etc and machined in various other ways - And can 100% guarantee that they work exactly like mild steel. Info I've gathered from people in the industry is that it is a HSLA (high strength low alloy) steel similar to that used in high pressure gas pipes. These steels typically contain 1.0% to 1.5% Mn with a very small amount of microalloying with elements like Ti, Mo and Nb (among others). Their properties are generally considered intermediate between plain carbon mild steels and chrome-moly.
Unfortunately Peugeot's HLE is propriety so we don't know the precise make up, but bear in mind that this was their "in house" tubing for their lower end bikes so it will be something low cost and readily available. The problem is, that what bike brands place on those tubing labels is as much about marketing as is about science or fact. For example, millions of bicycles have been sold with steel tubing marked "High Tensile" and they are invariably all just plain mild steel (usually 1018 or 1020).
Yes, probably just better to remove that photo and replace it with another if you have something of known mangalloy steel. Unfortunately the "Mangalloy" on that tubing sticker is just marketing (though it does have slightly higher Mn content than the mild steel tubing of some other bicycles).
This article is rated C-class on Wikipedia's
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Mangalloy, Hadfield Steel, has the composition and properties of Swedish Viking bog steel. Mangalloy has properties ideal for swords, axes, long boat rivets, helmets. Thus Hadfield steel is predated by a thousand years.
Hello fellow Wikipedians,
I have just modified one external link on Mangalloy. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
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This message was posted before February 2018.
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have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
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source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 06:15, 15 January 2018 (UTC)
The photo of the "mangalloy" bicycle frame here is very misleading, as it is a completely different type of steel to the high manganese Hadfield steel (11% to 15% Mn) which is the subject of this article.
That HLE steel (which stands for High Elastic Limit btw) is definitely not Hadfield steel, or even anything close to it. It is a low alloy steel containing only about 1.2% manganese with the addition of about 0.15% microalloying ingredients. That HLE steel is far closer to plain mild steel than it is to Hadfield steel.
My info comes from working with these bicycle frames. I've cold set (straightened) them, drilled and taped them for extra mount points etc and machined in various other ways - And can 100% guarantee that they work exactly like mild steel. Info I've gathered from people in the industry is that it is a HSLA (high strength low alloy) steel similar to that used in high pressure gas pipes. These steels typically contain 1.0% to 1.5% Mn with a very small amount of microalloying with elements like Ti, Mo and Nb (among others). Their properties are generally considered intermediate between plain carbon mild steels and chrome-moly.
Unfortunately Peugeot's HLE is propriety so we don't know the precise make up, but bear in mind that this was their "in house" tubing for their lower end bikes so it will be something low cost and readily available. The problem is, that what bike brands place on those tubing labels is as much about marketing as is about science or fact. For example, millions of bicycles have been sold with steel tubing marked "High Tensile" and they are invariably all just plain mild steel (usually 1018 or 1020).
Yes, probably just better to remove that photo and replace it with another if you have something of known mangalloy steel. Unfortunately the "Mangalloy" on that tubing sticker is just marketing (though it does have slightly higher Mn content than the mild steel tubing of some other bicycles).