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Member

Join Date: Oct 2007
Posts: 6

Device For Identifying 316L @ 304L SS In The Shop?

11/20/2007 9:55 AM

I have an upcoming project that is going to require extensive PMI testing. I am looking for a Device that will tell the difference between 304 & 304L and 316 & 316L. Paying for the service is an option but the schedule is such that it is going to hamper the flow if I have to wait for a testing contractor to come in. It would be easier if I could do it as needed. Do any of you have any experience or suggestions on a device?

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Associate

Join Date: Jul 2007
Location: Birmingham, Alabama
Posts: 36
#1

Re: Device For Identifying 316L @ 304L SS In The Shop?

11/20/2007 6:04 PM

Texas Nuclear has a dual nuclear source, handheld device that can be held against any metal and it will identify the material by name if it's an exact match. If it's not an exact match it will list all the components by %. They work great for receiving dept, PMI , required little training, are easily licensed but even a used one cost around $50,000.

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Associate

Join Date: Apr 2007
Location: RAJKOT, GUJARAT - INDIA
Posts: 51
#2

Re: Device For Identifying 316L @ 304L SS In The Shop?

11/21/2007 2:55 AM

HI,

by all means, the best option, could be setting up a permanent lab in your infrastructure, which will help you in more than one ways in future too, and deput a lab incharge. Most definitely the cost would be quiet lower than the hand held device suggested. Secondly, you can educate yourself, to commence the basic test in your own lab for identifying 304 to 316.

Rajiv

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Guru
Hobbies - DIY Welding - New Member

Join Date: Sep 2007
Posts: 1601
Good Answers: 58
#3

Re: Device For Identifying 316L @ 304L SS In The Shop?

11/21/2007 7:41 AM

I suggest you contact Innov-X-Systems in Woburn, MA. Their device may do exactly what you want. Please keep us informed.

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Participant

Join Date: Nov 2007
Location: Thursday, I could never get the hang of Thursdays.
Posts: 1
#4

Re: Device For Identifying 316L @ 304L SS In The Shop?

11/21/2007 9:47 AM

There are many options for hand held PMI testing while using X-ray Floresence. It's fast and pretty accurate to determine if it's Type 304 or 316. Unfortunatly XRF cannot detect Carbon content to distinguish 304 from 304L and likewise 316 from 316L.

You may want to look into plasma arc spectrography. Spectro makes a decent unit. Google "Spectrotest" and you will have a wealth of knowledge at your disposal.

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Guru
Engineering Fields - Systems Engineering - New Member Hobbies - Model Rocketry - New Member

Join Date: Dec 2006
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Good Answers: 14
#5

Re: Device For Identifying 316L @ 304L SS In The Shop?

11/21/2007 10:14 PM

Chemical Comp.316L

Fe, <0.03% C, 16-18.5% Cr, 10-14% Ni, 2-3% Mo, <2% Mn, <1% Si, <0.045% P, <0.03% S

Chem Comp 304L<0.02C. ,<0.06 N, 18.3%Cr,9.2%Ni

So look forMo.

Get a Lowest price Arc/Flame/Laser Photometer/Spectroscope fixed on Shopfloor

No reading=304

Readout forMo =316.

Ask < Info@OceanOptics.com>

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Power-User

Join Date: Dec 2006
Location: Vietnam
Posts: 153
#6

Re: Device For Identifying 316L @ 304L SS In The Shop?

11/23/2007 1:00 AM

The one of differences between 316 and 304 is Mo 2% in 316.

You can use Modybdenum chemical detector for your purpose.

If It is 316SS, then it will be discolored after using tester.

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Anonymous Poster
#7

Re: Device For Identifying 316L @ 304L SS In The Shop?

11/25/2007 2:33 PM

Gentlemen,

The portable testers can tell you only a limmited chemistry value.

most can not detect elements of carbon and less or 14 and less. this includes silicon

the diff between 316 316 l is the low carbon value.

so the machines will not tell you if you have l series or not. buyer beware of what the machines can do?

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Anonymous Poster
#8

Re: Device For Identifying 316L @ 304L SS In The Shop?

11/28/2007 12:31 PM

for difference between 304 and 316 with the help of moly detector are cheap and fast method.

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