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gkishorenair
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SS316L and Inox

09/23/2010 9:44 AM

Hi guys,

I have a project requirement which calls for inox instrument tubes and fittings. The service is desalter drain water or crude on a pump skid. It is to be used in the oil and gas industry and shall be used on-shore. The client has specified inox material for the fittings, tubes and flanges.

What I want to know is, is there any difference between SS316L and inox?

Can I buy and use SS316L instead of inox?

When we send the enquiries for these materials, should we specifically say inox is required?

Should I ask for a deviation to use SS316L instead of inox to be on the safe side?

Thanks in advance...
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PWSlack
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#1

Re: SS316L and Inox

09/23/2010 10:03 AM

"Acier inoxydable" is the French term for Stainless Steel.

Vraiment, il n'ya pas de problème avec l'acier 316L. C'est magnifique pour ce travail!

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PWSlack
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#2
In reply to #1

Re: SS316L and Inox

09/23/2010 10:32 AM

<...il n'ya pas...>

il n'ya pas il n'y a pas

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kvsridhar
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#3
In reply to #2

Re: SS316L and Inox

09/23/2010 11:59 AM

Merci beaucoup....

Garçon, can you get me a frogleg that tastes like KFC please?

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Doorman
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#4
In reply to #3

Re: SS316L and Inox

09/23/2010 12:27 PM

A place where they eat frogs not chicken? WAHOO!

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Tornado
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#5

Re: SS316L and Inox

09/23/2010 12:30 PM

Mais oui--avec les herbes justes!

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JohnDG
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#6

Re: SS316L and Inox

09/23/2010 5:33 PM

Ignoring the "sparkling wit and repartee" for a minute - if all they've spec'd is Inox, you could get away with using the cheapest SS you can find. (Inox is SS).

SS316 will be fine, but get some quotes, and see if a supplier can offer anything cheaper that will do the job. In the end, what you supply is going to have to be fit for purpose, but that's not saying you have to spend your pennies on something that'll last forever.

Must say I'm surprised they were so lax about the specification.

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dvmdsc
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#7

Re: SS316L and Inox

09/24/2010 12:19 AM

Inox = not rusting. Be careful, because most of the Inox family steels don't perform too good with salt water.

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Janissaries
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#9
In reply to #7

Re: SS316L and Inox

09/24/2010 10:42 AM

The company I work for is French owned and when I refer to the raw materials in the database in France all their Stainless Steel materials are referenced under Inox and they don't use it for any other type of materials. Aluminum they use Aug.

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dvmdsc
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#10
In reply to #9

Re: SS316L and Inox

09/24/2010 8:28 PM

Strange, I would think different: Aug is the abbreviation of AUGMENTUM. latin, which means SILVER.

If you have doubts ask more specific details to cover you up.

I have very bad experience with SS304 when used in salt water applications:

1. Liquid storage tank for fuel (30,000 m3) had holes in it after 10 time cleaning with brackish water. The tank had 6mm thick plates perforated on multiple places.

2. Wet exhaust for Yacht (Fairlane) SS304 - same story after 5 years.

3. Stainless housing pumps, same story.

One type you can go for is the 316L. I only have experience with failing 304. But do your home work first.

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pritam
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#8

Re: SS316L and Inox

09/24/2010 4:15 AM

Inox means in-oxydation. As the rust is simply iron oxide, you can say the inox is capable to prevent rust. Why you want specifically SS316L only when other ordinary grade SS can also be suitable for required service.

SS316L is a special low carbon grade SS, suitable for critical applications like cryogenic service below -180 deg C. Among SS304,304L,316 & 316L, SS316L may be the costliest one.
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Chemist59
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#11

Re: SS316L and Inox

09/25/2010 6:31 AM

You better go to the designer of this equipment.

There are so many differents in SS and also in Inox that you have to be better safe then sorry

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gkishorenair
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#12

Re: SS316L and Inox

09/25/2010 7:12 AM

Thanks for the response guys...
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Users who posted comments:

Chemist59 (1); Doorman (1); dvmdsc (2); gkishorenair (1); Janissaries (1); JohnDG (1); kvsridhar (1); pritam (1); PWSlack (2); Tornado (1)

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