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304 Stainless Steel Studs ?
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Joined: 12 Sep 2019
Location: Poor Farm
Points: 409 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BuckSkin Quote  Post ReplyReply Direct Link To This Post Topic: 304 Stainless Steel Studs ?
    Posted: 31 May 2024 at 7:43am
What common bolt would 304 Stainless be comparable to strength-wise ?

Would it be an okay choice for using as starter mounting studs screwed into Aluminum bell-housing ?

The starter fits in there like a gun-barrel and all the studs do is clamp it in place.

How would the 304 Stainless compare in strength to Black Oxide Alloy Steel ?

I have found the stainless in exactly the length I need; whereas, anything else I am going to have to cut to length.
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Joined: 23 Dec 2020
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Points: 2022 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2024 at 8:29am
type 304 stainless is 73,200 psi tensile strength where good quality grade 2 bolts are 105,000. Stainless is soft, and stringy. I would not use it in this application myself. Anti seize on grade five or better fasteners is what would be best. 
A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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Points: 409 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BuckSkin Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2024 at 8:35am
Originally posted by Codger Codger wrote:

type 304 stainless is 73,200 psi tensile strength where good quality grade 2 bolts are 105,000. Stainless is soft, and stringy. I would not use it in this application myself. Anti seize on grade five or better fasteners is what would be best. 

Thanks; I am not very familiar when it comes to stainless and was somewhat surprised as to how weak it is compared to normal Grade 2 bolts; Thanks.

I use plenty silver stuff; I slather it on everything.
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Points: 41485 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2024 at 2:35pm
Galling is a common problem with SS fasteners , only advantage is they are less corrosive , unsure of galvanic pitting between SS and aluminum 
ttps://www.google.com/search?q=yield+strength+of+304+SS+bolts+to+steel&rlz=1C1CHWA_enUS627US627&oq=yield+strength+of+304+SS+bolts+to+steel+&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCjM0MTU4ajBqMTWoAgiwAgE&sourceid=chrome&ie=UTF-8

https://www.asiadsteels.com/blog/benefits-of-304-stainless-steel-bolts/#:~:text=The%20te
nsile%20and%20yield%20strengths,these%20bolts%20are%20frequently%20utilized.

Advantages of Stainless Steel 304 Bolts 

 

Steel in the 304 grade has a high level of corrosion resistance. As a result, these bolts function without issue in a variety of alkali and acidic solutions. The material is formed both cold and hot, and it can be used in a variety of environments. The majority of building sites and industries use these bolts. Bolts made of stainless steel 304 are incredibly durable and perform well even under stress and inclement weather. Bolts made of stainless steel 304 are frequently used to firmly connect two or more things.

 



Edited by Coke-in-MN - 31 May 2024 at 2:42pm
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Points: 2022 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2024 at 2:48pm
A better selection would be 18-8 stainless steel as much stronger in tensile strength but can oxidize slightly. Almost as good at corrosion prevention as 304 but not quite and a much better fastener material.
A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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