Acton Bright Ltd
SO..can I just clarify. I need to make a some Brake adapters but I also need to make some Tool holders.If he is to make holders out of it as Mr Brad surmises, bright (cold rolled) might not be such a good idea as the slot you have to put in it for the tool could mean it warps considerably.
...suggests not using EN due to warping when I cut the large slot for tool?
OK to clarify. EN8 can come in Cold Rolled (Bright) and Hot Rolled (Black)Put 'c45 steel equivalent' into Google and read some of the links. That will help you determine the closest one available from your supplier.
Steel is generally supplied in two main forms: hot rolled, known as 'black' and cold rolled, known as 'bright'*. The cold rolling process leaves stresses in the material so if you machine it in an asymmetric way, it can warp**. Black bar has a lot less internal stress in it and will not move about on you. Put 'hot rolled vs cold rolled' into Google and see what it says.
So, FWIW, I would go for EN8 hot rolled (black).
* As the name suggests, Acton Bright specialise in cold rolled.
** I made a stick of Tee-nuts out of 24" of square cold rolled. When unclamped from the mill's table, it had a generous 1/4" of bow at midpoint.
OMG just when I thought I had it straight in my head......lol. thanks for the heads up though.Be careful with En8....there appears to be 2 distinctly different grades available
First one is low carbon thermomechanically treated structural steel thats reclassified as it meets the En8 spec for mechanicals
The Second is as it used to be. The higher carbon version that gets the mechanicals via the chemistry
I should ask to see the mill sheet before you buy....the second is best for heat treating....usually Eastern European origin.
I have already made aluminium ones.. but he fancied steel ones as tool steel sound good I guess...lolWhere has the decision to use that particular grade of steel come from? If it’s just for brake calliper adaptors then there are lots of more readily available grades of steel which will be more than suitable, en8 has been mentioned which be perfectly up to the job.
I used aluminium for mine, given they are aluminium callipers I couldn’t see any advantage using in using steel.
Yeah I think he thinks .more power steel is stronger.....I am just the €¥$¢^° on the miller.Can’t believe the price of those callipers! They’ve obviously really increased in popularity over the last couple of years, since they can be mounted to most hubs.
I did the conversion on my rover years ago using Clio 197 / Megane 225 calipers, think they were in not £200! roughed them out in some aluminium bar and ended up leaving them on because they fit that good. Obviously could have “stylised” them but never took them back off. Stops well with 340mm discs but struggled to find some 17” wheels they’d fit under...
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Suppose the skylines are heavy cars so steel would give some added security and durability
I have already made aluminium ones...
Well that went well.....NOT.Put 'c45 steel equivalent' into Google and read some of the links. That will help you determine the closest one available from your supplier.
Steel is generally supplied in two main forms: hot rolled, known as 'black' and cold rolled, known as 'bright'*. The cold rolling process leaves stresses in the material so if you machine it in an asymmetric way, it can warp**. Black bar has a lot less internal stress in it and will not move about on you. Put 'hot rolled vs cold rolled' into Google and see what it says.
So, FWIW, I would go for EN8 hot rolled (black).
* As the name suggests, Acton Bright specialise in cold rolled.
** I made a stick of Tee-nuts out of 24" of square cold rolled. When unclamped from the mill's table, it had a generous 1/4" of bow at midpoint.