Oxygen With Stainless Steel ???

aquaxel · 20th May 2008, 15:10

so far i was under the impression that 100% oxygen doesnt go together with stainless steel.

recently i witnessed the installation of stainlesss steel fittings and piping for the oxygen supply to a chamber.

the technician had the opinion that this was ok.

just to clarify, if anybody out there can so: has there anything changed in regard of o2 together with stainless and if so why?

or - if not, why is it not ok to combine o2 with stainless?

thanks in advance for info reply.

USSMEG · 20th May 2008, 15:19

Stainless is what all the insides and piping are in a Haskel set up for O/2. I'll look around, to see if there is any data, but it would be my choice to use for everything handling O/2.

Paul

USSMEG · 20th May 2008, 15:25

Gas - Material Compatibility - News & Information > Tables of Industrial Gas Properties | Linde in North America

check this out, all good except Aluminum. Ya think my AL40's are going to be ok ROFL.

Paul

aquaxel · 20th May 2008, 15:31

thanks. so far so good:

i found this: IMCA Diving Division · Publications · Stainless Steel in Oxygen Systems

lizardland · 20th May 2008, 15:47

Quote: (Originally Posted by USSMEG)

Gas - Material Compatibility - News & Information > Tables of Industrial Gas Properties | Linde in North America

check this out, all good except Aluminum. Ya think my AL40's are going to be ok ROFL.

Paul

Yep, oxygen and aluminium are bad in the right (or should that be wrong) circumstances. There have been fires in big oxygen installations (like hospitals and industrial facilities) where aluminium fragments have burnt. Aluminium fragments travelling down a gas line and hitting, say, a sharp bend, or a valve do have a big potential to go kaboom.

aquaxel · 20th May 2008, 16:29

found some more info here:

http://www.supsalv.org/pdf/DiverTechManual.pdf USN

PAGE 70 !!

depth · 20th May 2008, 17:47

Hi

I have heard from more than one source that Titanium also can not be recommended for high pressure/o2 rich environment. Can anyone confirm this?

/Christian

**nigelh** · 20th May 2008, 17:57

You have made my day....

What a put down on a Ali stage next time I get some ninja black DIR wannabe being rude about my steel bailouts:

"Of course companies like Linde specifically list Aluminium as incompatible with high pressure Oxygen," look concerned "You did know that didn't you?"

cool_hardware52 · 20th May 2008, 18:17

Quote: (Originally Posted by depth)

Hi

I have heard from more than one source that Titanium also can not be recommended for high pressure/o2 rich environment. Can anyone confirm this?

/Christian

Titanium + HP O2 = bad, very bad.

Titanium burns nicely, even at 1 ATA in air.

When I was much younger, and more ignorant I let fine Ti chips accumulate in the tray of a small lathe I was operating.

A hot chip hit this "fuzz stick" and bingo no eyebrows.

Tobin

cool_hardware52 · 20th May 2008, 18:21

Quote: (Originally Posted by aquaxel)

so far i was under the impression that 100% oxygen doesnt go together with stainless steel.

recently i witnessed the installation of stainlesss steel fittings and piping for the oxygen supply to a chamber.

the technician had the opinion that this was ok.

just to clarify, if anybody out there can so: has there anything changed in regard of o2 together with stainless and if so why?

or - if not, why is it not ok to combine o2 with stainless?

thanks in advance for info reply.

First choice if money is no object is Monel / Cupernickel / Alloy 400

Next would be brass

Close third is Stainless Steel.

Tobin

20th May 2008, 15:10	#1 (permalink)
aquaxel aquanaut Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Jun 2005 Location: cyprus Posts: 530	Oxygen With Stainless Steel ??? so far i was under the impression that 100% oxygen doesnt go together with stainless steel. recently i witnessed the installation of stainlesss steel fittings and piping for the oxygen supply to a chamber. the technician had the opinion that this was ok. just to clarify, if anybody out there can so: has there anything changed in regard of o2 together with stainless and if so why? or - if not, why is it not ok to combine o2 with stainless? thanks in advance for info reply. __________________ rgds aquaxel www.aquatec-innerspace.com
(Offline)

20th May 2008, 15:19	#2 (permalink)
USSMEG USSMEG Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2005 Location: Mass Posts: 293	Re: Oxygen With Stainless Steel ??? Stainless is what all the insides and piping are in a Haskel set up for O/2. I'll look around, to see if there is any data, but it would be my choice to use for everything handling O/2. Paul
(Offline)

20th May 2008, 15:25	#3 (permalink)
USSMEG USSMEG Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Mar 2005 Location: Mass Posts: 293	Re: Oxygen With Stainless Steel ??? Gas - Material Compatibility - News & Information > Tables of Industrial Gas Properties \| Linde in North America check this out, all good except Aluminum. Ya think my AL40's are going to be ok ROFL. Paul
(Offline)

20th May 2008, 15:47	#5 (permalink)
lizardland Yak Current Rebreather/s: MK 15.X Home Build Other Rebreather/s: Classic Kiss Home Build Join Date: Mar 2005 Location: North... Posts: 1,304	Re: Oxygen With Stainless Steel ??? Quote: (Originally Posted by USSMEG) Gas - Material Compatibility - News & Information > Tables of Industrial Gas Properties \| Linde in North America check this out, all good except Aluminum. Ya think my AL40's are going to be ok ROFL. Paul Yep, oxygen and aluminium are bad in the right (or should that be wrong) circumstances. There have been fires in big oxygen installations (like hospitals and industrial facilities) where aluminium fragments have burnt. Aluminium fragments travelling down a gas line and hitting, say, a sharp bend, or a valve do have a big potential to go kaboom. __________________ Can you imagine drifting along in the sea with your mouth open and a load of f***ing plankton going in? You'd like it, would you? www.westons-cider.co.uk Azerbaijani Association of Technical Divers Publicity Officer and Goat Wrangler
(Offline)

20th May 2008, 16:29	#6 (permalink)
aquaxel aquanaut Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Jun 2005 Location: cyprus Posts: 530	Re: Oxygen With Stainless Steel ??? found some more info here: http://www.supsalv.org/pdf/DiverTechManual.pdf USN PAGE 70 !! __________________ rgds aquaxel www.aquatec-innerspace.com
(Offline)

20th May 2008, 17:47	#7 (permalink)
depth Christian Rasmussen Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2006 Location: Denmark Posts: 195	Re: Oxygen With Stainless Steel ??? Hi I have heard from more than one source that Titanium also can not be recommended for high pressure/o2 rich environment. Can anyone confirm this? /Christian __________________ I am not qualified to make my own meg batteries!!! I am not qualified to make my own meg batteries!!! I am not qualified to make my own meg batteries!!! I am not qualified to make my own meg batteries!!! I am not.............
(Offline)

20th May 2008, 17:57	#8 (permalink)
nigelh New Member Current Rebreather/s: Inspiration Vision Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Mar 2005 Location: Brighton, Sussex, UK Posts: 838	Re: Oxygen With Stainless Steel ??? You have made my day.... What a put down on a Ali stage next time I get some ninja black DIR wannabe being rude about my steel bailouts: "Of course companies like Linde specifically list Aluminium as incompatible with high pressure Oxygen," look concerned "You did know that didn't you?" __________________ nigelh
(Online)

20th May 2008, 18:17	#9 (permalink)
cool_hardware52 RebreatherWorld Sponsor Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Mar 2005 Location: SoCal USA Posts: 385	Re: Oxygen With Stainless Steel ??? Quote: (Originally Posted by depth) Hi I have heard from more than one source that Titanium also can not be recommended for high pressure/o2 rich environment. Can anyone confirm this? /Christian Titanium + HP O2 = bad, very bad. Titanium burns nicely, even at 1 ATA in air. When I was much younger, and more ignorant I let fine Ti chips accumulate in the tray of a small lathe I was operating. A hot chip hit this "fuzz stick" and bingo no eyebrows. Tobin __________________ www.deepseasupply.com
(Offline)

20th May 2008, 18:21	#10 (permalink)
cool_hardware52 RebreatherWorld Sponsor Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Mar 2005 Location: SoCal USA Posts: 385	Re: Oxygen With Stainless Steel ??? Quote: (Originally Posted by aquaxel) so far i was under the impression that 100% oxygen doesnt go together with stainless steel. recently i witnessed the installation of stainlesss steel fittings and piping for the oxygen supply to a chamber. the technician had the opinion that this was ok. just to clarify, if anybody out there can so: has there anything changed in regard of o2 together with stainless and if so why? or - if not, why is it not ok to combine o2 with stainless? thanks in advance for info reply. First choice if money is no object is Monel / Cupernickel / Alloy 400 Next would be brass Close third is Stainless Steel. Tobin __________________ www.deepseasupply.com
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode