What is the go with SS bolts? I don't know anyhting about the tensile strength of bolts and was interested in the difference between the High tensile bolts and SS bolts you can get from your local Supercheap.
I like the idea of the nuts and bolts not rusting and making it easier to remove, replace or clean parts. I am specifically talking about the mounting bolts for engine peripherals like Alternator and Air Conditioning compressor.
The strength of Stainless Steel bolts
Started by
_Lamo_
, Feb 08 2009 04:24 PM
9 replies to this topic
#2
TerrA LX
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Posted 08 February 2009 - 04:29 PM
In general SS is stronger and less brittle under heat conditions than mild steel but can Wreak havoc with alloys.
Do some google research if you have concerns.
Do some google research if you have concerns.
#3
rodomo
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Posted 08 February 2009 - 04:34 PM
#4
_JBM_
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Posted 08 February 2009 - 04:39 PM
Stainless steel threads can gall when being assembled and the nut will jamb half way down the thread making the whole thing useless. There is a compound you can use the help prevent this.
Only high grade stainless like 316 will be rust resistant, 304 and weldable grades can still corrode.
The steel used in high grade tensile bolts have alloying elements to make them stronger that help resist rusting, its mostly the common grade screws and bolts that rust to oblivion.
James
Only high grade stainless like 316 will be rust resistant, 304 and weldable grades can still corrode.
The steel used in high grade tensile bolts have alloying elements to make them stronger that help resist rusting, its mostly the common grade screws and bolts that rust to oblivion.
James
#5
arrimar
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Posted 09 February 2009 - 01:24 PM
Stainless Steel bolts are shit.
#6
A9X
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Posted 09 February 2009 - 01:31 PM
Don't hold back,
tell us what you really think !
tell us what you really think !
#7
Swarbs
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Posted 09 February 2009 - 03:05 PM
You can get different grades of stainless -- the most common is 316 which is the marine grade and wont rust and the one that most people associate with.
A couple of others are 304 and 309 grade which have a higher nickol / chrome content etc and are stronger but you will get a slight discoloration over time (also a lot less prone to galling)
For the use you are talking about 316 should be fine but as JBM has pointed out it will gall if you dont have the proper anti sieze lubricant on it.
And yep you will get electroysis caused by disimilar metals if you start using it around aluminium and alloys
That Wikepedia has a fair bit of info if you want to have a read
Cheers D
A couple of others are 304 and 309 grade which have a higher nickol / chrome content etc and are stronger but you will get a slight discoloration over time (also a lot less prone to galling)
For the use you are talking about 316 should be fine but as JBM has pointed out it will gall if you dont have the proper anti sieze lubricant on it.
And yep you will get electroysis caused by disimilar metals if you start using it around aluminium and alloys
That Wikepedia has a fair bit of info if you want to have a read
Cheers D
#8
_scottya!_
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Posted 09 February 2009 - 03:21 PM
we use a copper spray as an anti seize for stainless.
#9
dattoman
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Posted 09 February 2009 - 07:29 PM
For accessories and wank value fine
For strength... no
For strength... no
#10
_the gts_
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Posted 10 February 2009 - 10:43 PM
S/S bolts are good, they are slightly stronger than Mild steel, but do not use them in place of grade 8 and higher bolts.
MUST MUST MUST use Anti-seize with them. Loctite makes it and so do a few others. you should be able to buy it from places like coventry's etc and possibly car places. And no you dont need to drown the bolts in it, only a light coat is enough. S/S is mor prone to galling in hotter areas e.g engine bay
It is a good idea to use Anti-seize on all bolts where it will not interfere with any sealant that you might need to use
MUST MUST MUST use Anti-seize with them. Loctite makes it and so do a few others. you should be able to buy it from places like coventry's etc and possibly car places. And no you dont need to drown the bolts in it, only a light coat is enough. S/S is mor prone to galling in hotter areas e.g engine bay
It is a good idea to use Anti-seize on all bolts where it will not interfere with any sealant that you might need to use
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