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Black Bar

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Graham Williams 1114/09/2019 12:03:54
28 forum posts
9 photos

Is black, presume hot rolled, round steel bar generally or always of EN3B spec???

Cheers

GW

Andrew Johnston14/09/2019 12:07:12
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4897 forum posts
552 photos

EN3 is the most common spec, but not the only one. You can get EN8 as black bar.

Andrew

JasonB14/09/2019 13:18:22
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Moderator
16454 forum posts
1741 photos
1 articles

You can even get EN1A but not from many of the usual ME suppliers.

vintage engineer14/09/2019 14:25:33
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189 forum posts
1 photos

Be very careful with mild steel black bar. This is normally recycled steel and full of all sorts of crap!

David George 114/09/2019 16:31:39
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952 forum posts
310 photos

I have EN 40B black bar and EN 32 black bar so beware what you buy and suplier.

David

John MC14/09/2019 18:02:50
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192 forum posts
26 photos

My preference is to always go for black bar if it's available in the grade of steel I want to purchase. Two reasons, its usually cheaper than bright drawn, also less prone to distortion during machining.

If steel is sold as EN3, black or cold drawn it will be EN3. All "new" steel will contain recycled steel, steel being one of the most recycled materials.

John

duncan webster15/09/2019 00:18:38
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2255 forum posts
32 photos
Posted by John MC on 14/09/2019 18:02:50:

My preference is to always go for black bar if it's available in the grade of steel I want to purchase. Two reasons, its usually cheaper than bright drawn, also less prone to distortion during machining.

If steel is sold as EN3, black or cold drawn it will be EN3. All "new" steel will contain recycled steel, steel being one of the most recycled materials.

John

And a lot of cast iron is made from steel scrap by adding carbon. The reason I think is you know what you are starting with, so you have a chance of knowing what you finish with.

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