Strength of stainless bolts

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Bill Hyatt
Posts: 78
Joined: Tue Nov 23, 2010 6:23 am

Re: Strength of stainless bolts

Post by Bill Hyatt » Fri Nov 24, 2017 1:24 pm

Guys,

 

Let s not paint all S/S alloys with the same brush & add to urban legends.

 

A-2 S/S is comparable to USA type 302/304 in corrosion resistance, A-4 is comparable to USA type 316 in corrosion resistance.

 

For higher strength, fatigue resistance, more durable & tougher S/S fasteners do not overlook ARP s:

Stainless300 @ 140k psi YS, & 170k-190k psi UTS.

Their Custom 450 S/S is rated at 150k psi YS & 170k-190k psi UTS. Suitable for Head bolts & other applications requiring greater than Grade 8 fasteners.

ARP Chrome Moly bolts = 180k psi YSZ & 190 UTS.

Then there are 17-4 PH & XM-19 series S/S bolts for applications requiring > mechanical properties & corrosion resistance that are widely used in the Marine Industry

 

Grade 5 bolts are MOL 90k psi YS, & 120k psi UT,

Grade 8 are MOL 120k psi YS, & 150k psi UTS

Both ARP S/S grades are stronger in YS & UTS than Grade 5 & 8, ranging from 13% to 55% >, more comparable to 10.9 Class or >, i.e. more.

Bill

TC 4926

Odessa, Fl

 

[b]From:[/b] mg-tabc@yahoogroups.com [mailto:mg-tabc@yahoogroups.com] [b]On Behalf Of [/b]'M. P.' imabystander@yahoo.com [mg-tabc] [b]Sent:[/b] Friday, November 24, 2017 9:33 AM [b]To:[/b] Roger Furneaux [b]Cc:[/b] mg-tabc-noreply@yahoogroups.com; mg-tabc@yahoogroups.com; diecuts@aol.com [b]Subject:[/b] Re: [mg-tabc] Strength of stainless bolts

 

 

 

Yep Roger, I stand corrected, although most sites offering SS fasteners list them according to their equivalency to Grade 3, 5, 8.8, 10.9 etc...  McMaster Carr who is arguably one of the most common hardware suppliers in the States offers SS hardware in 

18-8  Hardness B74  Tensile 70,000psi,  316   Hardness B70   Tensile 70,000psi, Alloy 20  Hardness B80  Tensile 80,000psi, A286  hardness C24  Tensile 130,000psi, HS 17-4PH  Hardness C28  Tensile 130,000psi and 410  Hardness Grade 5 equiv

 The Grade 8 or better equivalent SS hardware typically is not in open stock but is specialty order to mainly the Chemical Industry where high corrosion resistance is required along with high strength.  

Ref: 

[b]SAE Grade 8[/b] bolt capability in yield (stretch) = 130,000 lbs / in2 , SAE [b]Grade 8[/b] bolt capability in tension (failure) = 150,000 lbs / in2, 

[b]SAE Grade 5[/b] bolt capability in yield (stretch) = 92,000 lbs / in2,  SAE [b]Grade 5[/b] bolt capability in tension (failure) = 120,000 lbs / in2 

Metric Class 8.8  tension 110,000psi ,  Metric Class 10.9  Tension = 150,000psi,  Metric class 12.9 Tension = 174,000psi

I wonder if there is a document available that gives the BSW/BSF head markings/strength identification by location on our cars and likewise the mad metric head markings by location on the mechanicals as well.  That would be interesting as a comparison tool.  

Bottom line availability says that for low to medium strength applications SS is a viable option at the owners discretion...All others better to be safe than sorry....

 

 

On Friday , November 24 , 2017 06 : 04 : 13 AM CST, Roger Furneaux roger.46tc@gmail.com> wrote:

 

 

I don't think you will find stainless steel bolts in strength grades, only as A2 or A4, which refers to their corrosion resistance. SS is banned (don't know if it is actually enshrined in EU law) from being used in any safety related situations: apart from lack of ternsile strength it also suffers from work-hardening (maybe John Kallend can tell us more about this - are you there John?).

 

On our cars, the only obvious places to use them are holding the running-boards, and in places where a chrome-plated brass screw was used originally (such as the dashboard). Polished SS looks as good as chrome and will never tarnish.

 

FYI I keep good stocks of every bolt and stud used on our cars in zinc-plated HT steel  and  some SS. 

 

oc[b]T[/b]agonally

 

Roger

 

 

On Fri, Nov 24, 2017 at 9:31 AM, 'M. P.' imabystander@yahoo.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:

 

Graham:  Norman has you pretty much spot on with his comments on this subject.  I would add that if your UK supplier does not state the type or grade of SS they are selling you thst the hardware is pretty much for holding panel in place or as decorative hardware.  There are different grades of SS in different strengths but no ally you won't find anything better than a grade 5.  Grade 8 is available  but limited in availability and selections.  If I were you, I'd tend to follow Norm's advice.  

Sent from Yahoo Mail on Android

 

On Fri, Nov 24, 2017 at 1:53 AM, Graham Knight graham.knight5@gmail.com [mg-tabc]

mg-tabc-noreply@yahoogroups.com> wrote:

 

Hi, I occasionally make use of stainless steel bolts on my car - mostly bought from http://stigfasteners. easywebstore.co.uk/. I can find nothing on their site about precisely what grade of SS is used. Are SS bolts generally as strong as high-tensile steel? Graham

 

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Duncan
Posts: 95
Joined: Sat Jul 18, 2015 12:04 pm

Re: Strength of stainless bolts

Post by Duncan » Fri Nov 24, 2017 2:28 pm

SS hardware is notorious for causing galvanic corrosion to aluminum, steel and cast iron base metals that it is threaded into. General rule is no SS into any alum alloy. The SS bolts that can be heat treated to be just as strong as SAE Grade 8 bolts are 410, 416, 420 and 431, but they also are of the type SS most corrosive to steel, cast iron and aluminum. Duncan- --------------------------------------------
On Fri, 11/24/17, Roger Furneaux roger.46tc@gmail.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Subject: Re: [mg-tabc] Strength of stainless bolts To: "imabystander@yahoo.com" imabystander@yahoo.com> Cc: "mg-tabc-noreply@yahoogroups.com" mg-tabc-noreply@yahoogroups.com>, "mg-tabc@yahoogroups.com" mg-tabc@yahoogroups.com> Date: Friday, November 24, 2017, 4:03 AM I don't think you will find stainless steel bolts in strength grades, only as A2 or A4, which refers to their corrosion resistance. SS is banned (don't know if it is actually enshrined in EU law) from being used in any safety related situations: apart from lack of ternsile strength it also suffers from work-hardening (maybe John Kallend can tell us more about this - are you there John?). On our cars, the only obvious places to use them are holding the running-boards, and in places where a chrome-plated brass screw was used originally (such as the dashboard). Polished SS looks as good as chrome and will never tarnish. FYI I keep good stocks of every bolt and stud used on our cars in zinc-plated HT steel and some SS. ocTagonally Roger On Fri, Nov 24, 2017 at 9:31 AM, 'M. P.' imabystander@yahoo.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Graham: Norman has you pretty much spot on with his comments on this subject. I would add that if your UK supplier does not state the type or grade of SS they are selling you thst the hardware is pretty much for holding panel in place or as decorative hardware. There are different grades of SS in different strengths but no ally you won't find anything better than a grade 5. Grade 8 is available but limited in availability and selections. If I were you, I'd tend to follow Norm's advice. Sent from Yahoo Mail on Android On Fri, Nov 24, 2017 at 1:53 AM, Graham Knight graham.knight5@gmail.com [mg-tabc] wrote: Hi, I occasionally make use of stainless steel bolts on my car - mostly bought from http://stigfasteners. easywebstore.co.uk/. I can find nothing on their site about precisely what grade of SS is used. Are SS bolts generally as strong as high-tensile steel? Graham
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diecuts2333
Posts: 38
Joined: Thu Oct 21, 2004 6:43 am

Re: Strength of stainless bolts

Post by diecuts2333 » Fri Nov 24, 2017 10:43 pm

Bill,  Are all of these SS specs available at ACE hardware?    In the SS section?   Just wondering....:} Not likely, but McMaster Carr probably has some of them I bet..... Lee Jacobsen , Dearborn, MI  TC0780 -----Original Message----- From: Bill Hyatt usaj24@earthlink.net> To: 'M. P.' imabystander@yahoo.com>; 'Roger Furneaux' roger.46tc@gmail.com> Cc: mg-tabc mg-tabc@yahoogroups.com>; diecuts diecuts@aol.com> Sent: Fri, Nov 24, 2017 7:00 pm Subject: RE: [mg-tabc] Strength of stainless bolts #ygrps-yiv-96063532 #ygrps-yiv-96063532AOLMsgPart_2_b8f2c5e9-49e4-45c2-8097-368e8e6c164c td{color:black;} _filtered #ygrps-yiv-96063532 {font-family:Helvetica;panose-1:2 11 6 4 2 2 2 2 2 4;} _filtered #ygrps-yiv-96063532 {font-family:Wingdings;panose-1:5 0 0 0 0 0 0 0 0 0;} _filtered #ygrps-yiv-96063532 {font-family:"Cambria Math";panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #ygrps-yiv-96063532 {font-family:Cambria;panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #ygrps-yiv-96063532 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #ygrps-yiv-96063532 {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;} _filtered #ygrps-yiv-96063532 {font-family:Consolas;panose-1:2 11 6 9 2 2 4 3 2 4;} _filtered #ygrps-yiv-96063532 {font-family:Georgia;panose-1:2 4 5 2 5 4 5 2 3 3;} _filtered 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_filtered #ygrps-yiv-96063532 {margin-bottom:0in;}#ygrps-yiv-96063532 .ygrps-yiv-96063532aolReplacedBody ul {margin-bottom:0in;} Guys,   Let s not paint all S/S alloys with the same brush & add to urban legends.   A-2 S/S is comparable to USA type 302/304 in corrosion resistance, A-4 is comparable to USA type 316 in corrosion resistance.   For higher strength, fatigue resistance, more durable & tougher S/S fasteners do not overlook ARP s: Stainless300 @ 140k psi YS, & 170k-190k psi UTS. Their Custom 450 S/S is rated at 150k psi YS & 170k-190k psi UTS. Suitable for Head bolts & other applications requiring greater than Grade 8 fasteners. ARP Chrome Moly bolts = 180k psi YSZ & 190 UTS. Then there are 17-4 PH  & XM-19 series S/S bolts for applications requiring > mechanical properties & corrosion resistance that are widely used in the Marine Industry   Grade 5 bolts are MOL 90k psi YS, & 120k psi UT, Grade 8 are MOL 120k psi YS, & 150k psi UTS Both ARP S/S grades are stronger in YS & UTS than Grade 5 & 8, ranging from 13% to 55% >, more comparable to 10.9 Class or >, i.e. more. Bill TC 4926 Odessa, Fl   [b]From:[/b] mg-tabc@yahoogroups.com [mg-tabc@yahoogroups.com?] [b]On Behalf Of [/b]'M. P.' imabystander@yahoo.com [mg-tabc] [b]Sent:[/b] Friday, November 24, 2017 9:33 AM [b]To:[/b] Roger Furneaux [b]Cc:[/b] mg-tabc-noreply@yahoogroups.com; mg-tabc@yahoogroups.com; diecuts@aol.com [b]Subject:[/b] Re: [mg-tabc] Strength of stainless bolts       Yep Roger, I stand corrected, although most sites offering SS fasteners list them according to their equivalency to Grade 3, 5, 8.8, 10.9 etc...  McMaster Carr who is arguably one of the most common hardware suppliers in the States offers SS hardware in  18-8  Hardness B74  Tensile 70,000psi,  316   Hardness B70   Tensile 70,000psi, Alloy 20  Hardness B80  Tensile 80,000psi, A286  hardness C24  Tensile 130,000psi, HS 17-4PH  Hardness C28  Tensile 130,000psi and 410  Hardness Grade 5 equiv  The Grade 8 or better equivalent SS hardware typically is not in open stock but is specialty order to mainly the Chemical Industry where high corrosion resistance is required along with high strength.   Ref:  [b]SAE Grade 8[/b] bolt capability in yield (stretch) = 130,000 lbs / in2 , SAE [b]Grade 8[/b] bolt capability in tension (failure) = 150,000 lbs / in2,  [b]SAE Grade 5[/b] bolt capability in yield (stretch) = 92,000 lbs / in2,  SAE [b]Grade 5[/b] bolt capability in tension (failure) = 120,000 lbs / in2  Metric Class 8.8  tension 110,000psi ,  Metric Class 10.9  Tension = 150,000psi,  Metric class 12.9 Tension = 174,000psi I wonder if there is a document available that gives the BSW/BSF head markings/strength identification by location on our cars and likewise the mad metric head markings by location on the mechanicals as well.  That would be interesting as a comparison tool.   Bottom line availability says that for low to medium strength applications SS is a viable option at the owners discretion...All others better to be safe than sorry....    
On Friday , November 24 , 2017 06 : 04 : 13 AM CST, Roger Furneaux roger.46tc@gmail.com> wrote:
    I don't think you will find stainless steel bolts in strength grades, only as A2 or A4, which refers to their corrosion resistance. SS is banned (don't know if it is actually enshrined in EU law) from being used in any safety related situations: apart from lack of ternsile strength it also suffers from work-hardening (maybe John Kallend can tell us more about this - are you there John?).   On our cars, the only obvious places to use them are holding the running-boards, and in places where a chrome-plated brass screw was used originally (such as the dashboard). Polished SS looks as good as chrome and will never tarnish.   FYI I keep good stocks of every bolt and stud used on our cars in zinc-plated HT steel  and  some SS.    oc[b]T[/b]agonally   Roger     On Fri, Nov 24, 2017 at 9:31 AM, 'M. P.' imabystander@yahoo.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:   Graham:  Norman has you pretty much spot on with his comments on this subject.  I would add that if your UK supplier does not state the type or grade of SS they are selling you thst the hardware is pretty much for holding panel in place or as decorative hardware.  There are different grades of SS in different strengths but no ally you won't find anything better than a grade 5.  Grade 8 is available  but limited in availability and selections.  If I were you, I'd tend to follow Norm's advice.   Sent from Yahoo Mail on Android   On Fri, Nov 24, 2017 at 1:53 AM, Graham Knight graham.knight5@gmail.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:   Hi, I occasionally make use of stainless steel bolts on my car - mostly bought from http://stigfasteners. easywebstore.co.uk/. I can find nothing on their site about precisely what grade of SS is used. Are SS bolts generally as strong as high-tensile steel? Graham  
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Andrea VILLA
Posts: 47
Joined: Sat Dec 24, 2016 3:16 am

Re: Strength of stainless bolts

Post by Andrea VILLA » Sat Nov 25, 2017 3:18 am

I agree with Norman  On stress locations H grade steel must be used.Esplicationhttps://www.pilotsofamerica.com/community/threads/why-cadmium-plated-bolts-rather-than-stainless-s Stainless Steel Bolt AN6C (3/8 - 24) On Wicks Aircraft SupplyThis is the better grade that I have find-limited choice and  NO idea of the costs there are also the TITANIUM Aircraft Engine Bolts | Stanley Engineered Fastening I have it on my oldest 72  Porsche 911S  5 BOLTS on the four wheels (lot of stress)weight similar to the plastic compounds  
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M. P.
Posts: 23
Joined: Wed Oct 14, 2015 9:50 pm

Re: Strength of stainless bolts

Post by M. P. » Sat Nov 25, 2017 7:02 am

Ace may not have then identified as to material and spec details.   Certainly will not have the selection or quantities you may want.   McMaster Carr has all except the high strength selections .  Only prplem is that you are stuck with their quatitiy packaging.   You may want only 10 pcs but have to tske 25.   Sent from Yahoo Mail on Android
On Fri, Nov 24, 2017 at 11:43 PM, diecuts@aol.comdiecuts@aol.com> wrote: Bill,  Are all of these SS specs available at ACE hardware?    In the SS section?   Just wondering....:} Not likely, but McMaster Carr probably has some of them I bet..... Lee Jacobsen , Dearborn, MI  TC0780 -----Original Message----- From: Bill Hyatt usaj24@earthlink.net> To: 'M. P.' imabystander@yahoo.com>; 'Roger Furneaux' roger.46tc@gmail.com> Cc: mg-tabc mg-tabc@yahoogroups.com>; diecuts diecuts@aol.com> Sent: Fri, Nov 24, 2017 7:00 pm Subject: RE: [mg-tabc] Strength of stainless bolts #ygrps-yiv-1137436256 #ygrps-yiv-1137436256yiv9854429639 #ygrps-yiv-1137436256yiv9854429639AOLMsgPart_2_b8f2c5e9-49e4-45c2-8097-368e8e6c164c td{color:black;}#ygrps-yiv-1137436256 filtered #ygrps-yiv-1137436256yiv9854429639 {font-family:Helvetica;panose-1:2 11 6 4 2 2 2 2 2 4;}#ygrps-yiv-1137436256 filtered #ygrps-yiv-1137436256yiv9854429639 {font-family:Wingdings;panose-1:5 0 0 0 0 0 0 0 0 0;}#ygrps-yiv-1137436256 filtered #ygrps-yiv-1137436256yiv9854429639 {panose-1:2 4 5 3 5 4 6 3 2 4;}#ygrps-yiv-1137436256 filtered #ygrps-yiv-1137436256yiv9854429639 {font-family:Cambria;panose-1:2 4 5 3 5 4 6 3 2 4;}#ygrps-yiv-1137436256 filtered #ygrps-yiv-1137436256yiv9854429639 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}#ygrps-yiv-1137436256 filtered 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{margin-bottom:0in;} Guys,   Let s not paint all S/S alloys with the same brush & add to urban legends.   A-2 S/S is comparable to USA type 302/304 in corrosion resistance, A-4 is comparable to USA type 316 in corrosion resistance.   For higher strength, fatigue resistance, more durable & tougher S/S fasteners do not overlook ARP s: Stainless300 @ 140k psi YS, & 170k-190k psi UTS. Their Custom 450 S/S is rated at 150k psi YS & 170k-190k psi UTS. Suitable for Head bolts & other applications requiring greater than Grade 8 fasteners. ARP Chrome Moly bolts = 180k psi YSZ & 190 UTS. Then there are 17-4 PH  & XM-19 series S/S bolts for applications requiring > mechanical properties & corrosion resistance that are widely used in the Marine Industry   Grade 5 bolts are MOL 90k psi YS, & 120k psi UT, Grade 8 are MOL 120k psi YS, & 150k psi UTS Both ARP S/S grades are stronger in YS & UTS than Grade 5 & 8, ranging from 13% to 55% >, more comparable to 10.9 Class or >, i.e. more. Bill TC 4926 Odessa, Fl   [b]From:[/b] mg-tabc@yahoogroups.com [mg-tabc@yahoogroups.com?] [b]On Behalf Of [/b]'M. P.' imabystander@yahoo.com [mg-tabc] [b]Sent:[/b] Friday, November 24, 2017 9:33 AM [b]To:[/b] Roger Furneaux [b]Cc:[/b] mg-tabc-noreply@yahoogroups.com; mg-tabc@yahoogroups.com; diecuts@aol.com [b]Subject:[/b] Re: [mg-tabc] Strength of stainless bolts       Yep Roger, I stand corrected, although most sites offering SS fasteners list them according to their equivalency to Grade 3, 5, 8.8, 10.9 etc...  McMaster Carr who is arguably one of the most common hardware suppliers in the States offers SS hardware in  18-8  Hardness B74  Tensile 70,000psi,  316   Hardness B70   Tensile 70,000psi, Alloy 20  Hardness B80  Tensile 80,000psi, A286  hardness C24  Tensile 130,000psi, HS 17-4PH  Hardness C28  Tensile 130,000psi and 410  Hardness Grade 5 equiv  The Grade 8 or better equivalent SS hardware typically is not in open stock but is specialty order to mainly the Chemical Industry where high corrosion resistance is required along with high strength.   Ref:  [b]SAE Grade 8[/b] bolt capability in yield (stretch) = 130,000 lbs / in2 , SAE [b]Grade 8[/b] bolt capability in tension (failure) = 150,000 lbs / in2,  [b]SAE Grade 5[/b] bolt capability in yield (stretch) = 92,000 lbs / in2,  SAE [b]Grade 5[/b] bolt capability in tension (failure) = 120,000 lbs / in2  Metric Class 8.8  tension 110,000psi ,  Metric Class 10.9  Tension = 150,000psi,  Metric class 12.9 Tension = 174,000psi I wonder if there is a document available that gives the BSW/BSF head markings/strength identification by location on our cars and likewise the mad metric head markings by location on the mechanicals as well.  That would be interesting as a comparison tool.   Bottom line availability says that for low to medium strength applications SS is a viable option at the owners discretion...All others better to be safe than sorry....     On Friday , November 24 , 2017 06 : 04 : 13 AM CST, Roger Furneaux roger.46tc@gmail.com> wrote:     I don't think you will find stainless steel bolts in strength grades, only as A2 or A4, which refers to their corrosion resistance. SS is banned (don't know if it is actually enshrined in EU law) from being used in any safety related situations: apart from lack of ternsile strength it also suffers from work-hardening (maybe John Kallend can tell us more about this - are you there John?).   On our cars, the only obvious places to use them are holding the running-boards, and in places where a chrome-plated brass screw was used originally (such as the dashboard). Polished SS looks as good as chrome and will never tarnish.   FYI I keep good stocks of every bolt and stud used on our cars in zinc-plated HT steel  and  some SS.    oc[b]T[/b]agonally   Roger     On Fri, Nov 24, 2017 at 9:31 AM, 'M. P.' imabystander@yahoo.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:   Graham:  Norman has you pretty much spot on with his comments on this subject.  I would add that if your UK supplier does not state the type or grade of SS they are selling you thst the hardware is pretty much for holding panel in place or as decorative hardware.  There are different grades of SS in different strengths but no ally you won't find anything better than a grade 5.  Grade 8 is available  but limited in availability and selections.  If I were you, I'd tend to follow Norm's advice.   Sent from Yahoo Mail on Android   On Fri, Nov 24, 2017 at 1:53 AM, Graham Knight graham.knight5@gmail.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:   Hi, I occasionally make use of stainless steel bolts on my car - mostly bought from http://stigfasteners. easywebstore.co.uk/. I can find nothing on their site about precisely what grade of SS is used. Are SS bolts generally as strong as high-tensile steel? Graham
 
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Duncan
Posts: 95
Joined: Sat Jul 18, 2015 12:04 pm

Re: Strength of stainless bolts

Post by Duncan » Sat Nov 25, 2017 11:16 am

I agree with you Norman. Funny how all the people who are still so interested in strength of various grade SS fasteners will not say where they think use of SS bolts would be better than the original type, or why. Duncan- --------------------------------------.
On Fri, 11/24/17, 'Norman Verona' norman@frenchblat.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Subject: RE: [mg-tabc] Strength of stainless bolts To: "'Graham Knight'" graham.knight5@gmail.com>, mg-tabc@yahoogroups.com Date: Friday, November 24, 2017, 1:22 AM Graham, Stainless steel is soft and shouldn t be used on anything, like suspension or steering which requires high tensile steel strength. If you have used SS fixing on anything that takes load then I would strongly advise you change them for HS as soon as possible. Norman Verona11 Cherry Close, Royston, South Yorkshire S71 4LZPhone: 0044 (0)1226 728811Mob: 0044 (0)741 9905 741Web: www.frenchblat.com From: mg-tabc@yahoogroups.com [mailto:mg-tabc@yahoogroups.com] On Behalf Of Graham Knight graham.knight5@gmail.com [mg-tabc] Sent: 24 November 2017 08:54 To: mg-tabc@yahoogroups.com Subject: [mg-tabc] Strength of stainless bolts Hi, I occasionally make use of stainless steel bolts on my car - mostly bought from http://stigfasteners.easywebstore.co.uk/. I can find nothing on their site about precisely what grade of SS is used. Are SS bolts generally as strong as high-tensile steel? Graham
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diecuts2333
Posts: 38
Joined: Thu Oct 21, 2004 6:43 am

Re: Strength of stainless bolts

Post by diecuts2333 » Sat Nov 25, 2017 11:42 am

Duncan, the why seems obvious.....no rust.    Lee Jacobsen, Dearborn, MI TC0780 -----Original Message----- From: Duncan morelists@yahoo.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> To: mg-tabc mg-tabc@yahoogroups.com>; norman norman@frenchblat.com> Sent: Sat, Nov 25, 2017 2:16 pm Subject: RE: [mg-tabc] Strength of stainless bolts I agree with you Norman. Funny how all the people who are still so interested in strength of various grade SS fasteners will not say where they think use of SS bolts would be better than the original type, or why. Duncan- --------------------------------------.
On Fri, 11/24/17, 'Norman Verona' norman@frenchblat.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Subject: RE: [mg-tabc] Strength of stainless bolts To: "'Graham Knight'" graham.knight5@gmail.com>, mg-tabc@yahoogroups.com Date: Friday, November 24, 2017, 1:22 AM   Graham,  Stainless steel is soft and shouldn t be used on anything, like suspension or steering which requires high tensile steel strength.  If you have used SS fixing on anything that takes load then I would strongly advise you change them for HS as soon as possible.    Norman Verona11 Cherry Close, Royston, South Yorkshire S71 4LZPhone: 0044 (0)1226 728811Mob: 0044 (0)741 9905 741Web: www.frenchblat.com  From: mg-tabc@yahoogroups.com [mg-tabc@yahoogroups.com?] On Behalf Of Graham Knight graham.knight5@gmail.com [mg-tabc] Sent: 24 November 2017 08:54 To: mg-tabc@yahoogroups.com Subject: [mg-tabc] Strength of stainless bolts    Hi, I occasionally make use of stainless steel bolts on my car - mostly bought from http://stigfasteners.easywebstore.co.uk/. I can find nothing on their site about precisely what grade of SS is used. Are SS bolts generally as strong as high-tensile steel? Graham ------------------------------------ Posted by: Duncan morelists@yahoo.com> ------------------------------------ ------------------------------------ Yahoo Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/mg-tabc/ Your email settings: Individual Email | Traditional To change settings online go to: http://groups.yahoo.com/group/mg-tabc/join (Yahoo! ID required) To change settings via email: mg-tabc-digest@yahoogroups.com mg-tabc-fullfeatured@yahoogroups.com To unsubscribe from this group, send an email to: mg-tabc-unsubscribe@yahoogroups.com Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/
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Duncan
Posts: 95
Joined: Sat Jul 18, 2015 12:04 pm

Re: Strength of stainless bolts

Post by Duncan » Sat Nov 25, 2017 1:01 pm

Lee- SS bolts increase corrosion. The bolt itself does not rust, but the base metal (what it is threaded into) suffers dramatically increased Galvanic corrosion to the internal threads. The higher the grade strength SS, the worse the corrosion is. General rule is no SS bolts into alum alloy, but just as bad to use high strength (like 410) bolts into cast iron or steel. Duncan- -------------------------------------------- On Sat, 11/25/17, diecuts@aol.com [mg-tabc] wrote: Subject: Re: [mg-tabc] Strength of stainless bolts To: morelists@yahoo.com, mg-tabc@yahoogroups.com, norman@frenchblat.com Date: Saturday, November 25, 2017, 11:42 AM Duncan, the why seems obvious.....no rust. Lee Jacobsen, Dearborn, MI TC0780 -----Original Message----- From: Duncan morelists@yahoo.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> To: mg-tabc mg-tabc@yahoogroups.com>; norman norman@frenchblat.com> Sent: Sat, Nov 25, 2017 2:16 pm Subject: RE: [mg-tabc] Strength of stainless bolts I agree with you Norman. Funny how all the people who are still so interested in strength of various grade SS fasteners will not say where they think use of SS bolts would be better than the original type, or why. Duncan- --------------------------------------. On Fri, 11/24/17, 'Norman Verona' norman@frenchblat.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Subject: RE: [mg-tabc] Strength of stainless bolts To: "'Graham Knight'" graham.knight5@gmail.com>, mg-tabc@yahoogroups.com Date: Friday, November 24, 2017, 1:22 AM Graham, Stainless steel is soft and shouldn t be used on anything, like suspension or steering which requires high tensile steel strength. If you have used SS fixing on anything that takes load then I would strongly advise you change them for HS as soon as possible. Norman Verona11 Cherry Close, Royston, South Yorkshire S71 4LZPhone: 0044 (0)1226 728811Mob: 0044 (0)741 9905 741Web: www.frenchblat.com From:
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diecuts2333
Posts: 38
Joined: Thu Oct 21, 2004 6:43 am

Re: Strength of stainless bolts

Post by diecuts2333 » Sat Nov 25, 2017 1:21 pm

So SS for clamping applications , where ss bolts have ss nuts, is fine?     Lee Jacobsen, Dearborn, MI   TC0780 -----Original Message----- From: Duncan morelists@yahoo.com> To: mg-tabc mg-tabc@yahoogroups.com>; diecuts diecuts@aol.com> Sent: Sat, Nov 25, 2017 4:01 pm Subject: Re: [mg-tabc] Strength of stainless bolts Lee- SS bolts increase corrosion. The bolt itself does not rust, but the base metal (what it is threaded into) suffers dramatically increased Galvanic corrosion to the internal threads. The higher the grade strength SS, the worse the corrosion is. General rule is no SS bolts into alum alloy, but just as bad to use high strength (like 410) bolts into cast iron or steel. Duncan- -------------------------------------------- On Sat, 11/25/17, diecuts@aol.com [mg-tabc] wrote: Subject: Re: [mg-tabc] Strength of stainless bolts To: morelists@yahoo.com, mg-tabc@yahoogroups.com, norman@frenchblat.com Date: Saturday, November 25, 2017, 11:42 AM   Duncan, the why seems obvious.....no rust.    Lee Jacobsen, Dearborn, MI TC0780 -----Original Message----- From: Duncan morelists@yahoo.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> To: mg-tabc mg-tabc@yahoogroups.com>; norman norman@frenchblat.com> Sent: Sat, Nov 25, 2017 2:16 pm Subject: RE: [mg-tabc] Strength of stainless bolts I agree with you Norman. Funny how all the people who are still so interested in strength of various grade SS fasteners will not say where they think use of SS bolts would be better than the original type, or why. Duncan- --------------------------------------. On Fri, 11/24/17, 'Norman Verona' norman@frenchblat.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Subject: RE: [mg-tabc] Strength of stainless bolts To: "'Graham Knight'" graham.knight5@gmail.com>, mg-tabc@yahoogroups.com Date: Friday, November 24, 2017, 1:22 AM   Graham,  Stainless steel is soft and shouldn t be used on anything, like suspension or steering which requires high tensile steel strength.  If you have used SS fixing on anything that takes load then I would strongly advise you change them for HS as soon as possible.    Norman Verona11 Cherry Close, Royston, South Yorkshire S71 4LZPhone: 0044 (0)1226 728811Mob: 0044 (0)741 9905 741Web: www.frenchblat.com  From:
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Duncan
Posts: 95
Joined: Sat Jul 18, 2015 12:04 pm

Re: Strength of stainless bolts

Post by Duncan » Sat Nov 25, 2017 2:51 pm

Most cases I would think that would be OK. Duncan- --------------------------------------------
On Sat, 11/25/17, diecuts@aol.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Subject: Re: [mg-tabc] Strength of stainless bolts To: morelists@yahoo.com, mg-tabc@yahoogroups.com Date: Saturday, November 25, 2017, 1:20 PM So SS for clamping applications , where ss bolts have ss nuts, is fine? Lee Jacobsen, Dearborn, MI TC0780 -----Original Message----- From: Duncan morelists@yahoo.com> To: mg-tabc mg-tabc@yahoogroups.com>; diecuts diecuts@aol.com> Sent: Sat, Nov 25, 2017 4:01 pm Subject: Re: [mg-tabc] Strength of stainless bolts Lee- SS bolts increase corrosion. The bolt itself does not rust, but the base metal (what it is threaded into) suffers dramatically increased Galvanic corrosion to the internal threads. The higher the grade strength SS, the worse the corrosion is. General rule is no SS bolts into alum alloy, but just as bad to use high strength (like 410) bolts into cast iron or steel. Duncan- -------------------------------------------- On Sat, 11/25/17, diecuts@aol.com [mg-tabc] wrote: Subject: Re: [mg-tabc] Strength of stainless bolts To: morelists@yahoo.com, mg-tabc@yahoogroups.com, norman@frenchblat.com Date: Saturday, November 25, 2017, 11:42 AM Duncan, the why seems obvious.....no rust. Lee Jacobsen, Dearborn, MI TC0780
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