Go Back   AnandTech Forums > Social > Off Topic

Forums
· Hardware and Technology
· CPUs and Overclocking
· Motherboards
· Video Cards and Graphics
· Memory and Storage
· Power Supplies
· Cases & Cooling
· SFF, Notebooks, Pre-Built/Barebones PCs
· Networking
· Peripherals
· General Hardware
· Highly Technical
· Computer Help
· Home Theater PCs
· Consumer Electronics
· Digital and Video Cameras
· Mobile Devices & Gadgets
· Audio/Video & Home Theater
· Software
· Software for Windows
· All Things Apple
· *nix Software
· Operating Systems
· Programming
· PC Gaming
· Console Gaming
· Distributed Computing
· Security
· Social
· Off Topic
· Politics and News
· Discussion Club
· Love and Relationships
· The Garage
· Health and Fitness
· Merchandise and Shopping
· For Sale/Trade
· Hot Deals with Free Stuff/Contests
· Black Friday 2014
· Forum Issues
· Technical Forum Issues
· Personal Forum Issues
· Suggestion Box
· Moderator Resources
· Moderator Discussions
   

Reply
 
Thread Tools
Old 09-23-2005, 07:58 PM   #1
imported_Tick
Diamond Member
 
Join Date: Feb 2005
Posts: 4,685
Default Does anyone know how to test if something is brass?

Without using a spectrometer?
imported_Tick is offline   Reply With Quote
Old 09-23-2005, 07:59 PM   #2
Wallydraigle
Banned
 
Join Date: Nov 2000
Posts: 10,755
Default Does anyone know how to test if something is brass?

If you can make a tuba out of it, it's brass.
Wallydraigle is offline   Reply With Quote
Old 09-23-2005, 07:59 PM   #3
T3C
Diamond Member
 
Join Date: Jun 2003
Posts: 5,325
Default Does anyone know how to test if something is brass?

Quote:
Originally posted by: Wallydraigle
If you can make a tuba out of it, it's brass.

lmao
T3C is offline   Reply With Quote
Old 09-23-2005, 08:00 PM   #4
MX2
Lifer
 
Join Date: Apr 2004
Posts: 18,651
Default Does anyone know how to test if something is brass?

Quote:
Originally posted by: Wallydraigle
If you can make a tuba out of it, it's brass.
lol
MX2 is offline   Reply With Quote
Old 09-23-2005, 08:00 PM   #5
imported_Tick
Diamond Member
 
Join Date: Feb 2005
Posts: 4,685
Default Does anyone know how to test if something is brass?

Quote:
Originally posted by: Wallydraigle
If you can make a tuba out of it, it's brass.
MY GOD!!! BRILIANT!!!!!!!!
imported_Tick is offline   Reply With Quote
Old 09-23-2005, 08:00 PM   #6
imported_Tick
Diamond Member
 
Join Date: Feb 2005
Posts: 4,685
Default Does anyone know how to test if something is brass?

Anyone have a serious post?
imported_Tick is offline   Reply With Quote
Old 09-23-2005, 08:00 PM   #7
Mark R
Diamond Member
 
Mark R's Avatar
 
Join Date: Oct 1999
Posts: 8,256
Default Does anyone know how to test if something is brass?

destiny?
Mark R is online now   Reply With Quote
Old 09-23-2005, 08:01 PM   #8
imported_Tick
Diamond Member
 
Join Date: Feb 2005
Posts: 4,685
Default Does anyone know how to test if something is brass?

Quote:
Originally posted by: Mark R
destiny?
Do you mean density?
imported_Tick is offline   Reply With Quote
Old 09-23-2005, 08:02 PM   #9
Mark R
Diamond Member
 
Mark R's Avatar
 
Join Date: Oct 1999
Posts: 8,256
Default Does anyone know how to test if something is brass?

Quote:
Do you mean density?
ROLF. Do you need to ask?
Mark R is online now   Reply With Quote
Old 09-23-2005, 08:03 PM   #10
SnowyEnigma
Senior Member
 
Join Date: May 2003
Posts: 399
Default Does anyone know how to test if something is brass?

its any alloy, so unless you know the ratio of Cu to Sn, then dunno.. density would be between the value of Sn's and Cu's density
SnowyEnigma is offline   Reply With Quote
Old 09-23-2005, 08:07 PM   #11
imported_Tick
Diamond Member
 
Join Date: Feb 2005
Posts: 4,685
Default Does anyone know how to test if something is brass?

Well, I'd guess it'd be about 40%, but that's useless as there's no way I'm gonna imerse it in water, so there is no practicle way to test for volume.
imported_Tick is offline   Reply With Quote
Old 09-23-2005, 08:11 PM   #12
Tiamat
Lifer
 
Tiamat's Avatar
 
Join Date: Nov 2003
Location: Stafford, VA
Posts: 14,055
Default Does anyone know how to test if something is brass?

see how much water it displaces - this is its volume.
Weigh it on a scale - this is its mass.

Look up the density of copper, steel, tin, aluminum (the 4 suspects that are commonly used for pipes).

Density = Mass/volume

Done.
Tiamat is offline   Reply With Quote
Old 09-23-2005, 08:13 PM   #13
imported_Tick
Diamond Member
 
Join Date: Feb 2005
Posts: 4,685
Default Does anyone know how to test if something is brass?

Yes, but I'm not going to imerse it in water, and it's not a pipe.
imported_Tick is offline   Reply With Quote
Old 09-23-2005, 08:15 PM   #14
Tiamat
Lifer
 
Tiamat's Avatar
 
Join Date: Nov 2003
Location: Stafford, VA
Posts: 14,055
Default Does anyone know how to test if something is brass?

Quote:
Originally posted by: Tick
Yes, but I'm not going to imerse it in water, and it's not a pipe.
Fine, then take the outer dimensions - its not tough to calculate volume...

that is unless you cant use a ruler...

Edit:

If for some reason you cant get the volume (odd shape) then you have to be able to weigh it. With this, and finding the densities of the above metals on the internet, you can calculate a theoretical volume. If the theoretical volume falls in between that of copper and tin or zink, then you have brass.
Tiamat is offline   Reply With Quote
Old 09-23-2005, 08:16 PM   #15
iwantanewcomputer
Diamond Member
 
Join Date: Apr 2004
Posts: 5,045
Default Does anyone know how to test if something is brass?

dissolve it in random acids and look up what acids dissolve what elements of brass. I think the brass in instruments is usually mostly copper and zinc, don't know about pipes
iwantanewcomputer is offline   Reply With Quote
Old 09-23-2005, 08:34 PM   #16
rahvin
Elite Member
 
Join Date: Oct 1999
Posts: 8,476
Default Does anyone know how to test if something is brass?

Buy some brass polish and see if it polishs it? Honestly if it's not brass it's most likely Iron so see if it's ferous.
__________________
I tried being reasonable once. I didn't like it.
rahvin is offline   Reply With Quote
Reply

Thread Tools

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 07:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.