Intrepting Result from a Charpy Test 1

[TestingTom]

Good Afternoon all,

I have a query about results from 2 no. Charpy Tests. The results were 31 & 30 joules (average) and I wonder if there were reference tables helping me to get a feel for the type of steel I was dealing with.

Any help would be appreciated.

 

[CoryPad]

You can get some basic data from MatWeb. Here is a typical page from a low carbon steel with impact data at various temperatures.

http://www.matweb.com/search/DataSheet.aspx?MatGUID=ac54866df849406fa1a8a9d24e7f4d95

Regards,

Cory

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[metengr]

TestingTom;
Why don't you send one of the Charpy impact test samples (broken piece) to a metallurgy/materials test lab that can perform a chemical analysis or if the Charpy impact test was performed by a metallurgical lab have them do this for you? The cost should be under $100.00 USD and will give you the specific information you need.

 

[HgTX]

metengr has a very good idea. Charpy value alone isn't going to tell you a thing. (Okay, it might rule out cast iron.)

Hg

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[DiplingAndre]

Thats correct. You can't tell what kind of steel only from impact test.
If you have the pieces perform an PMI-Test or a chemical analysis by spectroscopy its quite cheap and you can exactly say what kind of grade you have!