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CR4 and EN 43 A... how different are they?

CR4 and EN 43 A... how different are they?

CR4 and EN 43 A... how different are they?

(OP)
Hi,

I am seeking a bit of advice regarding steel (and the different names/references that are used). I have a supplier offering me a component in CR4, but my customer wants EN 43 A..... are these materials the same?

I have had a Google-hunt but didn't help make the picture any clearer for me... apologies if there are similar posts elsewhere.

Thanks

Elastomatt

RE: CR4 and EN 43 A... how different are they?

Hi Elastomatt.

In simple terms they are not that similar when you look at composition, mechanical properties etc.
Grade 43A is an old designation - it is most likely to be EN 10025 S275JR, it is hot rolled, general purpose, weldable steel of 275MPa min yield
The CR4 is a cold rolled steel with high elongation and lower carbon content as is not specified by strength, but is weaker. It is good for cold forming.
I am not that knowledgeable about CR4 but I think it is covered by ISO 3574.

Hope this helps.

RE: CR4 and EN 43 A... how different are they?

It looks like CR4 falls under a British Standard, BS 1449. This material is a cold rolled, low carbon steel (max 0.12% by mass). Not an equivalent to EN 43A.

RE: CR4 and EN 43 A... how different are they?

(OP)
Thanks Guys, that has clarified things a bit for me.....guess I need to have words with my supplier!!

Elastomatt

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