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I Forge Iron

Steel plate identification


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Was told it was some O1 tool steel  (A guy selling his fathers shop since he passed)...but unsure. Trying to identify for certainty before use....

Going to show a spark test

I just lightly touched the steel with grinder.....but hopefully it shows enough

 

thumbnail_20160823_184402_resized.jpg

Project001.mp4

below post is a mp4 below picture

 

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The sort of deeply pitted, "red" rust, ... visible in the first pictures, ... is not something I would normally associate with "tool" steel.

And the thing about "spark" tests, is they are subject to MANY variables.

( Wheel Composition, Speed, Pressure, Temperature, etc. )

When you do both tests side-by-side, a lot of those variables are eliminated, ... but comparing your results to an online IMAGE, raises more questions than it answers.

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1 hour ago, CMS3900 said:

The only way to tell for certain is to call a few big commercial scrap yards in your area and ask if they have a steel testing gun, and how much they would charge to have it tested, or send a sample out for analysis.

thank you

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O1 is a very common alloy. Look the plates over really good, I have had some that were stamped with the alloy, although most places now use color codes on the ends--they are not standardized unfortunately. 

Other than that , take a slice off of one and do a quickie heat treat it. O1 will get glass hard, and in thin sections it will air harden. I used a lot of it when I was the tool maker for a machine shop. 

What are the sizes of those plates?

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1" x 4" x 18"

1" x 5" x 18"

3/4" x 6" x 18"

I was told it was oil hardened or something along those lines....not a direct qoute... but $$$ of what looked like what they paid, and some other scribbles where/are on the pieces...Not sure if thats what they paid or what...but prices and sizes match Metaldepot's order list...but I think these are standard cut sections for O1....but I am far from knowledgeable on this. 

I never worked with O1...but do a test piece....im very curious.

2 hours ago, BIGGUNDOCTOR said:

O1 is a very common alloy. Look the plates over really good, I have had some that were stamped with the alloy, although most places now use color codes on the ends--they are not standardized unfortunately. 

Other than that , take a slice off of one and do a quickie heat treat it. O1 will get glass hard, and in thin sections it will air harden. I used a lot of it when I was the tool maker for a machine shop. 

What are the sizes of those plates?

 

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