The vast majority of stainless fasteners are grade A2-70, and have
approximately 85% of the tensile strength of grade 8.8 steel bolts. As such,
stainless fasteners are only recommended for non-stressed applications,
which effectively rules out brake calipers, suspension mountings, brake
discs, seatbelt anchors and propshaft bolts.
Steve.
> Rubbish...all depends on the quality of the material used to make the
> stainless...you get good bolts & bad bolts.
[quoted text clipped - 33 lines]
>>>>>Cheers
>>>>>Andy
Pedro - 06 Jan 2006 18:44 GMT
This has been discussed here many times I think
Serach for Stainless Steel Bolts.
I found this - not sure how to create a link to a past thread...
Need to be sure what we are doing.
Form over function...??? I like the last comment in the thread :-)
5. Graham Wolstenholme
Apr 26 2000, 7:00 am show options
Newsgroups: alt.autos.mini
From: zebedee@PROBLEM_WITH_INEWS_DOMAIN_FILE (Graham Wolstenholme) -
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Date: 2000/04/26
Subject: Re: Stainless bolts
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Stainless steel isn't the cure-all solution for corrosion in steel that
it
sometimes seems to be unfortunately.
There are many grades of stainless steel, each of which has different
characteristics, but common problems include:
Rusting when in contact with ordinary steels.
More prone to high cycle fatigue failures.
Particularly prone to crevice corrosion and resultant fatigue
failure.
(This is particularly nasty because you won't see it at all until
the
bolt breaks.)
Stainless bolts are NOT high tensile bolts. For many automotive
applications they simply are not strong enough to tighten them
properly. This isn't a problem when bolting the top radiator bracket
onto the thermostat housing, but is potentially a very real problem
for
example in head and rocker block bolts.
High tensile bolts are available in gold passivated zinc chromate
finish
(gold colored) which will probably perform as you had hoped stainless
would do.
Graham
ianb (buck...@btinternet.com) wrote:
: Anyone know if stainless bolts etc can be sourced for a mini. If so
where
: from
: I really want a set of bolts etc to put a stop to rusty bolts forever
: Thanks
--
"As the radius of knowledge increases.....
So too does the circumference of ignorance"
GO - 06 Jan 2006 19:45 GMT
I agree, stainless should be used where appropriate like bumper bolts &
hedlight bezel screws etc........
> The vast majority of stainless fasteners are grade A2-70, and have
> approximately 85% of the tensile strength of grade 8.8 steel bolts. As
[quoted text clipped - 41 lines]
>>>>>>Cheers
>>>>>>Andy
> Rubbish...all depends on the quality of the material used to make the
> stainless...you get good bolts & bad bolts.
OK so you say that doesn't happen BS
And if you have not read in another post
"Rusting when in contact with ordinary steels."
"Particularly prone to crevice corrosion and resultant fatigue
failure."
Please explain!!!!!!!!!!!!!!!
>>>Hi Fragged
>>>Totally agree,
[quoted text clipped - 29 lines]
>>>>>Cheers
>>>>>Andy
GO - 07 Jan 2006 17:15 GMT
>> Rubbish...all depends on the quality of the material used to make the
>> stainless...you get good bolts & bad bolts.
[quoted text clipped - 8 lines]
>
> Please explain!!!!!!!!!!!!!!!
> As you seem to want an argument.......
> What is written in other posts may not be correct? Bolts would not rust,
> however the 'ordinary steel would rust anyway, unless suitably treated (if
> you own a Mini then you will know all about treating corrosion)
Stainless steel is a horrible material that comes in many different grades
(similar to mild steel) you have to choose the grade (tensile strength wise)
to fit the purpose. Just going to the local chandlery for the stuff just
isn't going to work.
Manufacturers use the cheapest components they can get their hands on that
is 'fit for purpose' why use a 10p screw when a 1p plastic clip will do the
job?
Over to you....
>>>>Hi Fragged
>>>>Totally agree,
[quoted text clipped - 31 lines]
>>>>>>Cheers
>>>>>>Andy
Rob - 08 Jan 2006 01:27 GMT
>>>Rubbish...all depends on the quality of the material used to make the
>>>stainless...you get good bolts & bad bolts.
[quoted text clipped - 12 lines]
>>What is written in other posts may not be correct? Bolts would not rust,
>>however the 'ordinary steel would rust anyway,
You have answered yourself thanks.
GO - 08 Jan 2006 09:21 GMT
Will you be going to Llandudno at the weekend?
Pedro - 09 Jan 2006 06:41 GMT
Steady folks. Perhaps we shouldn't fall out...?
The original poster has goods for sale and hasn't been back to answer
any of the criticisms.
Here is the link to his ebay page
http://cgi.ebay.co.uk/Stainless-Steel-Mini-Rear-Subframe-Fitting-Kit_W0QQitemZ46
00865275QQcategoryZ43122QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
No mention of grade. If someone wants to ask him for details of the
quality of the SS he is offering this would give him the chance to
answer.
Not sure I would fasten my sub frame on with these bolts though without
reassurance. Life's too short.
P