Skip to main content

[MW:25803] For Cryogenic Services at Temp -196 degree Celsius (17 Kelvin) Pipe of ASTM 312 TP 304 L is suitable?

By Materials & Welding

Hello Vivek,

 

Your query is on the best compatible materials for :-Liquid Hydrogen, Liquid Oxygen, Liquid Helium, Liquid Nitrogen, Gaseous Hydrogen, Gaseous Oxygen, Gaseous Nitrogen, Gaseous Helium environments. The design temperatures for all of these gases in liquefied stages vary from -160 deg C to -196 deg C.

 

Amongst the 3 grades mentioned below, 304L and 316L would easily meet the cryogenic requirements down up to -196 Deg C. SS 321 could be a subjective choice below -160 Deg C.

 

The requirements are for “Cryogenic Engine Testing Facility” which is not child’s play, hence one has to understand and follow the guidelines of ISRO.After all they the designers and owners of these systems.

 

Discussions on these “sensitive issues” may not be advisable.

 

Welding of these alloys (304L and 36L) has to be very controlled, regulated and to be done in clean room. Ferrite in the weld should not exceed 2%, or else meeting impact and lateral expansion properties would not be possible.

 

Meantime if you want to know more about these materials and their low temperature properties, feel free to refer the document as below.

 

Thanks.

 

Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Engineering Specialist ,

Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgoswami@quickclic.net

pradip.goswami@gmail.com

 

https://www.nickelinstitute.org/~/media/Files/TechnicalLiterature/MaterialsforCryogenicService_EngineeringPropertiesofAusteniticStainlessSteel_4368_.ashx

 

From: vivek singh Chaudhary <viveksinghme1612@gmail.com>
To: materials-welding@googlegroups.com
Sent: Monday, 5 December 2016 11:02 PM
Subject: [MW:25795] For Cryogenic Services at Temp -196 degree Celsius (17 Kelvin) Pipe of ASTM 312 TP 304 L is suitable?

 

Dear Experts,

Currently I am working on a project of ISRO (Indian Space Research Organisation) for Integrated Cryogenic Engine Testing Facility (ICET), for bidding in that services are Liquid Hydrogen, Liquid Oxygen, Liquid Helium, Liquid Nitrogen, Gaseous Hydrogen, Gaseous Oxygen, Gaseous Nitrogen, Gaseous Helium.

For SS Seamless Pipes client has given three options for material ASTM 312 TP 304L/ ASTM 312TP 316L/ ASTM 312TP 321. 

Kindly suggest me the suitable material for the same that gives economical and best design.

 

Thanks in advance.

 

Regards:-

Vivek Singh Chaudhary

Piping Design Engineer.

Contact No.- +91 9990441755.

 

 

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAP6FfyH8HRZ%3Dk7QQbBvHyjqSCXryhuoGtrw%2BHJ4_aKcSrp0fHg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.

 

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/122952475.244562.1481000697665%40mail.yahoo.com.
For more options, visit https://groups.google.com/d/optout.

Comments

Post a Comment

Popular posts from this blog

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

By Materials & Welding
Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...
Post a Comment
Read more

Materails FAQs

By Materials & Welding
Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...
21 comments
Read more

The Schaeffler and Delong diagrams for predicting ferrite levels in austenitic stainless steel welds

By Materials & Welding
Introduction Ferrite is important in avoiding hot cracking in during cooling from welding of austenitic stainless steels. 'Constitution diagrams' are used to predict ferrite levels from the composition by comparing the effects of austenite and ferrite stabilising elements. The Schaeffler and Delong diagrams are the original methods of predicting the phase balances in austenitic stainless steel welds. Nickel and chromium equivalents A 'nickel equivalent' is calculated for the austenite stabilising elements and a 'chromium equivalent' ferrite stabilising elements. These are used as the axes for the diagrams, which show the compositional equivalent areas where the phases austenite, ferrite, martensite (and mixtures of these) should be present. Although intended to show the phase balance of weld fillers, these diagrams can also be used to illustrate the phase balance of the 'parent' material. There are different diagrams for dif...
Post a Comment
Read more