Specifying EN materials
Specifying EN materials
(OP)
I have a project for a fabricator in the UK. How do you spec materials there?
In the US, I would specify the ASTM's for whatever I want. I have the EN 10025 for properties, but I don't know if there's is another governing spec or if I would specify "EN 10025-2 S355" and that's adequate across the board. I am using S235 and S355 materials, and some grade 4340 material. I will have plates, rolled channels and angles, RHS and custom machined billets (S355 and 4340). The billets are different size rectangular and round billets that get machined to a final shape.
I would like input from an engineer's perspective please. We will also be asking the fabricator.
In the US, I would specify the ASTM's for whatever I want. I have the EN 10025 for properties, but I don't know if there's is another governing spec or if I would specify "EN 10025-2 S355" and that's adequate across the board. I am using S235 and S355 materials, and some grade 4340 material. I will have plates, rolled channels and angles, RHS and custom machined billets (S355 and 4340). The billets are different size rectangular and round billets that get machined to a final shape.
I would like input from an engineer's perspective please. We will also be asking the fabricator.





RE: Specifying EN materials
I believe part 1 (EN10025-1) explains in detail about how to spec/to use the different denominations.
RE: Specifying EN materials
Clause 5 also gives the requirements for "Information to be supplied by Purchaser".
The EN referenced only specifies the grade of steel, so you need to specify the section sizes, geometry or any other requirements separately. The section sizes and geometric properties are specified in a different code.
I am not aware of grade 4340 but I don't think it is to EN 10025, at least it doesn't ring any bells.
RE: Specifying EN materials
This link should also help:- http://www.roymech.co.uk/Useful_Tables/Matter/Stee...
RE: Specifying EN materials
So for a hot-rolled tube, would I spec EN 10210 S355JRH, for example?
RE: Specifying EN materials
And for the tubular to EN 10210 then you have specified it correctly.
RE: Specifying EN materials
RE: Specifying EN materials
http://www.astm.org/COMMIT/SUBCOMMIT/A0115.htm
You could try a EuroNorm equivalent, see thread14-146795: EN Equivalent of SAE 4340.
RE: Specifying EN materials
RE: Specifying EN materials
RE: Specifying EN materials
Quenched and Tempered materials are specified in BS EN 10083-3:2006
Another route to obtaining direct equivalents for the majority of steels is to find the Werkstoff Nummer (Material Number)of the US based alloy and then find its direct European Equivalent.
For example the Werkstoff Nr. for 4340 is 1.6565
There are many web based guides to International Cross References but the most reliable and one that I have used all my working life is Stahlschlüssel.
http://www.keytosteel.com/en/products/cd-rom/conte...
Costly but excellent.
If you are completely stuck then this maybe a place to start:
http://keytometals.com/page.aspx?ID=CheckArticle&a...
RE: Specifying EN materials
Link
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