Chemical and mechanical properties

Milo, that is awesome. Could you reference your source?

Sure.

First, it was n't SAE ASTM, so No point in looking in US sources (OK P - grade plastic mold steels are a possibility, but why compare them and the numbers weren't the ones I remembered.

So I went to my foreign references

It wasn't in my copy of Stahlshlussel ( the key to steel- http://www.amazon.com/Stahlschlussel-Stahlschussel-Steel-Clef-Aciers/dp/3922599176)

The P specs that it had were French/ Italian origin, and The posting verbiage didn't seem to be French Italian query (Intuition hearing the unheard); plus, it didn't show the specific P-grades that were requested.

I didn't like what I saw in World Wide Equivalents (http://asmcommunity.asminternational.org/content/ASM/StoreFiles/ACFAB8B.pdf) either for similar "intuitive" reasons, so I went to www.metalinfo.com ( I have a subscription) and then sorted through every grade that had those two designations in it as a text string. (the problem is that their data bases will give you anything that contains the text string, not just say, only steels... so a novice can get into some trouble pretty fast. Matching text strings ain't the same as knowledge.)

The nature of the query trying to contrast the two confirmed that I had identified the two likeliest candidate grades/specs/ standards from the information at hand.

So identified from the (lack of) Facts available.

Glad you appreciated my effort.

I expected Abdel Halim Galala or Kwetz to be the quality control on my post. They are sharp hombres when it comes to steel, too.

milo

Thanks.

I'm a young metallurgical engineer and I've been having to wade through the ambiguous international steel designations. In school (how's that for sounding like a "greenhorn"?) they don't teach anything outside of SAE or ASM, but eveything you gave me is pure gold.