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Tech Q & A Forum

Sorting Inconel Scrap  June 2015

Q.  We need a simple method to segregate the mixed up machining burr of Inconel 625 and Inconel 825. Please suggest if you can help us.  Emerson Process Management, Pune India.

 A.  The least expensive test kit that will work is Koslow Part No. 1542C.  This kit is a simple test for Molybdunum (Mo).  The 625 has about 9% and the 825 has 3% Moly.  It will be very easy to sort these two Inconel Please see this link: http://www.koslow.com/stainless-steel-316-id-kit-1542c.html

Q.  We went through the video on YouTube, the test method identifies the presence of Moly.  We need further clarification, how by using Koslow Part No. 1542C, the difference in Mo contain be identified, as in case of Inconel 625 & Inconel 825? We have a box full of burr (about 1 ton), mixture of Inconel 625 & Inconel 825.   We need to separate out these 2 alloys in the easiest way.  Please let us know how you can help us.


A. Wow! I see what you mean!  Since you have a large quantity of material- the fastest method is The Prospector: Thermo-Electric Alloy Sorter TE-3000-HDThe two materials can be easily sorted.  Photo from this morning’s test readings.


Sorter Speed. Feb. 2015  

Q. Has your Thermoelectric Alloy Sorters changed recently?  We are familiar with Thermo-electric machines that are big, slow and bulky.  Jim Wasserman, Fairbanks AK

A.  Back in the day, thermoelectric sorters were bulky and slow. The Prospector: Thermo-Electric Alloy Sorter TE-3000-HD has been notably updated within the past few years. We’ve made the device smaller and added modern solid state electronics, specialized probe tips, international voltage regulators, and external signal jacks that make the equipment more compatible for data logging and programmable logic control (PLCs).

TE vs. Spot Test   Jan. 2015

Q. I’m not sure which technology is best for my application.  What is the difference between testing with a Thermoelectric Alloy Sorter and a Chemical Spot Test Kit and when would you recommend using one over the other?   Darren B. Fort Worth TX

A.  A Thermoelectric Alloy Sorter can test metals in about 1 second per test whereas a Chemical Spot Test Kit tests metals in about 30 seconds per test. I would recommend that someone use the latter in cases where the metals are very similar as the kit allows more distinction between familiar metals, such as stainless steel 316 and 304. The Chemical Spot Test Kit is more sensitive to like metals, though it’s not as fast. Please give us a call to discuss the details of your application. 

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