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EN STEELS and their uses

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clogs14/03/2015 18:50:46
621 forum posts
12 photos

HI all, sorry it's a dumb question.....

IN THE BODGERSLODGE it's mentioned quite often :-

can someone tell me what the correct name for " EN hardaswitchestits" seems like something quite handy to know...

is there a rough idea's list to describe the common use's of the EN types of steel....

thanks ... clogs...

Keith Long14/03/2015 19:18:26
870 forum posts
11 photos

I've just scanned some informnation about En grades and uses from the "Mechanical World Year Book (1963)". I've got it as a pdf document - which I can't post on here, but if anyone woould like a copy please send me your e-mail address by using the "personnal message" facility on here. I can then send it to you as an attachment to an e-mail.

Even though the info is from the 1963 edition, the same tables were reproduced in 1974 so I guess things didn't (and haven't) changed much.

I'm sure that this info is also pretty freely available with a bit of searching around the internet.

IanT14/03/2015 19:19:34
1946 forum posts
194 photos

This whole subject can get very technical and complicated Clogs - but for the layman (e.g. me & you) I find this simple chart covers all of my needs in this area.




Neil Wyatt14/03/2015 20:15:25
18899 forum posts
734 photos
80 articles

One warning - many stockholder have their own colour codes. A chap at my local one seemed to be quite amused that my colour chart didn't match up to their codes.

So always ask, don't just grab stuff off the dexion!


Jesse Hancock 115/03/2015 08:06:14
314 forum posts

Without researching the reasons why British steel codes haven't changed is that the specifications don't change. Other countries like Australia and USA produce good steel and seem to have kept the same codes as the British.

Steel can be likened to cooking with varying ingredients depending on requirements and so, as needs change new steels are concocted to fill the gap.

Maybe the Chinese and Indians have found Kraptenite and have decided to recode their products accordingly.





Edited By Jesse Hancock 1 on 15/03/2015 08:39:18

mechman4815/03/2015 08:52:47
2938 forum posts
466 photos

'Kraptonite'... new one on me, but I like it; mind you some of the bolts on my 'made in China' equipment was typically that stuff; changed all to decent 8.8 grade fixings.


Baldric15/03/2015 09:46:38
176 forum posts
19 photos

I have found this site useful in the past **LINK** it provides quite a bit of information on what the material is suitable for and equivalents.

Chris Johns19/04/2015 00:41:37
2 forum posts

As I understand it EN numbers tend to relate to specific applications so the actual chemistry of the steel may change over time as standards change.

duncan webster21/04/2015 19:53:06
3710 forum posts
69 photos

EN standards for steel is long obsolete. BS 970:1991 is what I used when still employed, EN3 would be 070M20. Very useful site giving equivalents and typical use at

Capstan Speaking21/04/2015 20:12:43
177 forum posts
14 photos

The EN range of steel specifications was first introduced in 1941 as the War Emergency, British Standard Schedule BS970.

Don't get hung up on the old names. It's now just a turn of phrase like the even older names such as "gunmetal."

Manofkent21/04/2015 21:58:41
141 forum posts
29 photos

A retired toolmaker told me once that EN was short for "Emergency Number", and was introduced as a short term fix in WW2

ronan walsh21/04/2015 22:30:59
546 forum posts
32 photos

Anywhere i have worked it has always been en numbers used. Likewise when i go to the special steels supplier they and i use en, unless its for stainless and then its 300 or 400 series , or stuff like p20 tool steels. To me it works well.

jason udall22/04/2015 09:49:37
2031 forum posts
41 photos
Do any of the cognoscenti know how to deal with production drawings when quoting for 10k parts year.
Where the material code is "misspelt".
And this spec . Obviously isn't made. BUT the customer can't/won't change the drawing?.
Customer's solution was for us to quote on the material as per and apply for concession on each delivery.

richardandtracy22/04/2015 10:19:19
943 forum posts
10 photos

Usefully BS 970 is mostly obsolete. Even the ones that replaced the En steels. We now have EN steels, where EN stands for 'EuroNorm' not 'Emergency Number'

The useful ones to know are:

En1A F/C = BS 970:1991/1996 230M07 = BS EN 10277: Steel No. 1.0715

En1A Leaded = BS 970:1991/1996 230M07Pb = BS EN 10277: Steel No. 1.0718

En3B/En32 = BS 970:1991/1996 080A15 = BS EN 10277: Steel No. 1.041

En8DM = BS 970:1991/1996 212A42 = BS EN 10277: Steel No. 1.0727

En16T = BS 970:1991/1996 605M36T. No EN equivalent.

En24T = BS 970:1991/1996 817M40T = BS EN 10277: Steel No. 1.6582

Yes, we have adopted the German number system for steels through the EN system. Which means that a 304 steel is 1.4301, a 303 steel is 1.4305, while a 316L is 1.4404. Good innit.



Neil Wyatt22/04/2015 12:38:03
18899 forum posts
734 photos
80 articles

Harold Hall campaigned tirelessly for us to use 230M07 instead of EN1a, but nonetheless whenever I go to stockholder and ask for 230M07 they say 'do you mean EN1a?'


Capstan Speaking22/04/2015 12:57:31
177 forum posts
14 photos
Posted by jason udall on 22/04/2015 09:49:37:
Do any of the cognoscenti know how to deal with production drawings when quoting for 10k parts year.
Where the material code is "misspelt".
And this spec . Obviously isn't made. BUT the customer can't/won't change the drawing?.
Customer's solution was for us to quote on the material as per and apply for concession on each delivery.

That's a recipe to not get paid.

On the quote add "On the understanding that the supplied material will be grade xxxxxxxx"

When ordered send an acknowledgement "Order accepted subject to the conditions of quote xxxx."

jason udall22/04/2015 15:00:42
2031 forum posts
41 photos
Capstan..what we did after throughly establishing that the error did not have a possible metal ( the number system used in spec was of the type 230M07) corresponding ..was it made/possible even if no one stocked it.
...not all alloys possible to describe, are cast .

Oh we could have it made but at a minimum tonnage ( surprisingly small actually) would not have had the required properties. .and the cost...
So we declined. .saying we would be happy to quote to a corrected drawing or different metal. And please find enclosed quote in this material. .

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