A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Space Science » Policy
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Tank ruptures at Boca Chica



 
 
Thread Tools Display Modes
  #1  
Old June 26th 20, 04:14 PM posted to sci.space.policy
Dean Markley
external usenet poster
 
Posts: 515
Default Tank ruptures at Boca Chica

On Friday, June 26, 2020 at 8:09:00 AM UTC-4, David Spain wrote:
On 2020-06-23 2:49 PM, JF Mezei wrote:
Also, since SN7 was built as a test tank without both tanks or the
engine mounting structures under it, I assume SpaceX are testing new
tank building materials/techniques?


From what I have read elsewhere, yes this appears to have been a
deliberate "test to failure". Apparently SpaceX is experimenting with a
new steel alloy called "304L". Elon was said to have been pleased that
it failed first as a leak before a rupture. They were testing with
cryogenic liquid nitrogen as a prelude to other materials, presumably
liquid oxygen and liquid methane.

Dave

https://futurism.com/the-byte/spacex...-starship-tank
https://www.teslarati.com/spacex-sta...-up-new-alloy/


304L is a slightly modified version of 304 steel. The main difference is that 304L has less carbon, 0.03% as opposed to 0.08% in 304. That means 304L has slightly lower tensile strength and yield strength. But that reduction in carbon means it is easier to weld and gives stronger joints. Interestingly, most metals get stronger as they get colder. An exception is carbon steels as the carbon inclusions provide weak points when the metal is cold. So from that view, 304L is even better than 304.
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
SpaceX Chooses Boca Chica in Brownsville Texas for new launch site. David Spain[_4_] Policy 7 August 20th 14 07:54 PM
Tank Up TopPoster Amateur Astronomy 0 January 8th 08 05:42 AM
Tank Up TopPoster Amateur Astronomy 0 January 8th 08 04:44 AM
to tank or not tank..... Bob Haller Space Shuttle 5 April 14th 06 03:01 AM
Aux tank fix [email protected] Science 0 September 4th 05 07:14 PM


All times are GMT +1. The time now is 05:39 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 SpaceBanter.com.
The comments are property of their posters.