What kind of stainless did I buy? - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > General Tech > Shop and Tools
Notices

Reply
 
Share LinkBack Thread Tools Display Modes
Old 05-15-2019, 03:15 PM   #1 (permalink)
Broke Bastard
 
Benny's Avatar
 
Join Date: Jun 2000
Member # 1129
Location: North Idaho
Posts: 4,049
What kind of stainless did I buy?

I found some stainless sheeting at the recyclers today. It is almost mirror finish. It doesn't have the visible grain that is normally in stainless. It feels very rigid, like it would be a pain in the arse to bend it. It is probably 1/16 thick

I would like to know what kind of stainless it is, so I can figure out what filler rod I need to TIG it.
__________________
Every day is better than the next.
Benny is offline   Reply With Quote Quick reply to this message
Old 05-15-2019, 04:18 PM   #2 (permalink)
ZAG
Registered User
 
ZAG's Avatar
 
Join Date: Oct 2002
Member # 14113
Location: FINLAND
Posts: 2,135
most likely polished 304 stainless
ZAG is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 05-15-2019, 06:38 PM   #3 (permalink)
Pirate4x4 Addict!
 
rockmup's Avatar
 
Join Date: Jan 2003
Member # 16699
Location: Greenwell Springs La.
Posts: 10,637
Why didn't you have them shoot it ? Here, they all have PMI guns.
Take it to a shop and give them a 20 to shoot it.
rockmup is offline   Reply With Quote Quick reply to this message
 
Old 05-15-2019, 06:48 PM   #4 (permalink)
Broke Bastard
 
Benny's Avatar
 
Join Date: Jun 2000
Member # 1129
Location: North Idaho
Posts: 4,049
Quote:
Originally Posted by rockmup View Post
Why didn't you have them shoot it ? Here, they all have PMI guns.
Take it to a shop and give them a 20 to shoot it.
I had no idea what you were talking about so I googled PMI gun.

That's pretty cool.

Not worth it for what I am doing. I bought 2 pieces that are 24x36. It cost me $9.31 for both. I want to make a pan in the bottom of the sink cabinet in the kitchen
__________________
Every day is better than the next.
Benny is offline   Reply With Quote Quick reply to this message
Old 05-15-2019, 07:45 PM   #5 (permalink)
Registered User
 
Join Date: Jun 2011
Member # 192237
Location: St. Paul, MN
Posts: 11,418
got a bunch of sheets like that

they were the mirrors from a prison bathroom
no idea on the alloy, but they sure don't bend or drill good. Pretty much just plasma and abrasives
[486] is offline   Reply With Quote Quick reply to this message
Old 05-15-2019, 08:06 PM   #6 (permalink)
Rock God
 
Join Date: Oct 2011
Member # 200478
Location: Port Orchard, WA
Posts: 1,130
I believe 309l is highly regarded for general purpose use on unknown steels. Check out Jody's channel on youtube, welding tips and tricks. He should have content to help you.
isbj60 is offline   Reply With Quote Quick reply to this message
Old 05-16-2019, 11:37 PM   #7 (permalink)
Antisocial
 
JMAN3203's Avatar
 
Join Date: Jul 2009
Member # 139337
Location: Fayetteville, AR
Posts: 3,960
I'm going with polished 3xx series as well.
__________________
Quote:
Originally Posted by 45acp
I found out about him being an orphan Chinese immigrant. Dude worked the first half of his life in a dim overcrowded toy factory, scrubbing lead dust off of dolls. I can just see him over in the corner with his little asbestos brush and a bottle of formaldehyde cleaner...[...]
JMAN3203 is offline   Reply With Quote Quick reply to this message
Old 05-18-2019, 10:40 AM   #8 (permalink)
Zeus of the Sluice
 
JeffHPK5's Avatar
 
Join Date: Apr 2005
Member # 45481
Location: Cincinnati, Nohio
Posts: 2,958
3 series is non-magnetic and 4 series will show moderate magnetism.
__________________
Support Yellow Star Members

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Aerospace Tool&Die by trade..Don't call me a machinist!


TEAM CARWASH 2010 TTC CHAMPS
JeffHPK5 is offline   Reply With Quote Quick reply to this message
Old 05-18-2019, 07:05 PM   #9 (permalink)
Broke Bastard
 
Benny's Avatar
 
Join Date: Jun 2000
Member # 1129
Location: North Idaho
Posts: 4,049
Oh yeah. A magnet sticks to this stuff pretty good.
__________________
Every day is better than the next.
Benny is offline   Reply With Quote Quick reply to this message
Old 05-18-2019, 07:56 PM   #10 (permalink)
Rock God
 
Join Date: Oct 2011
Member # 200478
Location: Port Orchard, WA
Posts: 1,130
Cold worked 300 series can also be magnetic.
isbj60 is offline   Reply With Quote Quick reply to this message
Old 06-03-2019, 10:08 AM   #11 (permalink)
Registered User
 
Join Date: Aug 2005
Member # 52710
Location: The Boat, Co
Posts: 4,622
If its highly magnetic, it's not 304 or 316.

Some 400 series stainlesses don't weld great.

Do a test weld, Tig with 309L. Beat it with a hammer and see if you get a brittle failure.
__________________
Slowly building:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jpmassey is offline   Reply With Quote Quick reply to this message
Old 06-03-2019, 10:10 AM   #12 (permalink)
Registered User
 
Join Date: Aug 2005
Member # 52710
Location: The Boat, Co
Posts: 4,622
Quote:
Originally Posted by Benny View Post
I want to make a pan in the bottom of the sink cabinet in the kitchen
Missed this. Just Tig with 309L and it'll be fine.
FYI, 400 series doesn't have near the corrosion resistance 300 series does.
__________________
Slowly building:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jpmassey is offline   Reply With Quote Quick reply to this message
Old 06-03-2019, 11:28 AM   #13 (permalink)
Registered User
 
Join Date: Nov 2015
Member # 625826
Location: Laredo, Tx
Posts: 76
ER312 should work with most any stainless. Very versatile filler rod.
OscarJr is offline   Reply With Quote Quick reply to this message
Old 06-17-2019, 10:35 AM   #14 (permalink)
Gravity Works!
 
Landslide's Avatar
 
Join Date: Dec 2003
Member # 25608
Location: One foot in the grave
Posts: 30,902
If it's mirror finish or polished, it's probably 304 #8 mirror finish. Usually has a PVC protective wrapping on it.

There is an acid test you can use on it along with a tester, one drop of acid on a small pad on the steel then stick the tester on it and count. It should turn a reddish color if it's 316.

304 can and will rust while 316 won't.

Youtube search SS test kit to find out what I'm talking about.

You'll need the correct filler rods for the SS if you Tig weld it. Both 316 and 304 can be formed.
__________________
Peg Leg Fab Lab
Landslide is offline   Reply With Quote Quick reply to this message
Old 06-17-2019, 12:27 PM   #15 (permalink)
Registered User
 
Join Date: Oct 2004
Member # 36733
Location: Was Bozeman now Cofederated tribes res
Posts: 10,392
Quote:
Originally Posted by Landslide View Post
If it's mirror finish or polished, it's probably 304 #8 mirror finish. Usually has a PVC protective wrapping on it.

There is an acid test you can use on it along with a tester, one drop of acid on a small pad on the steel then stick the tester on it and count. It should turn a reddish color if it's 316.

304 can and will rust while 316 won't.

Youtube search SS test kit to find out what I'm talking about.

You'll need the correct filler rods for the SS if you Tig weld it. Both 316 and 304 can be formed.
If its magnetic its probably 400 series not 300. The OP indicated it was magnetic...you can get 420 and 416 #4bright just like 300 series.
If it weren't for the magnetic issue it can also be 302; that's another 300 series SST used for bright finished consumer goods because it deep draws/bends real nice.
__________________
[I]Vegetarian is an old Native American word for bad hunter[/I]
DavidVanVorous is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Pirate4x4.Com : 4x4 and Off-Road Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.

** A VERIFICATION EMAIL IS SENT TO THIS ADDRESS TO COMPLETE REGISTRATION!! **

Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 04:28 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.