Friday, June 22, 2012

What is Grade 8.8 stainless steel fasteners

A grade 8.8 fastener can be manufactured from any material whose mechanical properties meet or exceed the requirements set forth in the relevant harmonised standards.
The two-digit nomenclature is not used to describe individual steel grades and only applies to metric fasteners defined under ISO 965 (as well as derived standards)
The designation system is based on two numbers e.g 8.8 . The first number is the tensile strength of the bolt material (N/mm2 )/100. The second number is = 1/100.(the ratio of the Proof (or Yield ) stress and the Tensile strength expressed as a percentage = 100.[Yield (Proof stress) /Tensile strength] /100
meaning that a grade 8.8 bolt has a nominal ultimate tensile strength (UTS) of 800N/mm2 (or Mpa) and a nominal yield strength of 640N/mm2 (or Mpa).
These values are not expressed in Kg/mm2 or PSI as the first is an expression of mass by surface-area, the second is an expression of weight by surface-area and neither are true units under the SI system.
Lastly, the actual steel grade used by manufacturers may vary but in most cases, a grade 8.8 fastener (self-colour, black-oxide or zinc plated) will be manufactured from a medium-alloy medium carbon steel, typically with 0.30 - 0.50 % Carbon and alloyed with other elements such as Molybdenum, Vanadium, Manganese and sometimes Boron or Cobalt in small quantities. These alloying elements provide the required mechanical properties to reach the minimum strength set forth by the harmonised standards.

Bare in mind that people sometimes refer to "high-tensile bolts" which are typically grade 8.8 or superior under the metric fastener system. Grade 8.8 and superior bolts should always have their grade permanently marked on the head to differentiate them from "low-tensile bolts" as inadvertantly replacing the former with the latter could have disastrous effects.
Grade 4.6 bolts are typically refered to as "low tensile" and are often used in the construction industry as these bolts offer higher ductility and resilience compared to "high-tensile" bolts.
Hope this helps.

Compare this to BUMAX 88 series by contacting your local BUMAX stainless steel fastener engineer at www.bufabusa.com  BUMAX is product line of BUFAB Bulten Stainless.

37 comments:

  1. Super Engineers Manufacturer are best Exporters of Nuts, Bolts, Washers, screws, Threaded Roads all over in india. Super Engineers is a worldwide competitor in the era of Fastener Industry.


    High Tensile Fasteners

    ReplyDelete
  2. Pankaj International is committed to developing, manufacturing, delivering and servicing quality products. Our goal is to continuously improve our products and services in order to satisfy the needs of our customers before, during and after sales.

    In each of our product Category our quality is amongst the best in the world. We use the best quality of raw materials that are tested and subjected to stringent standards as per required specifications. Process capability studies & other statistical tools are employed to check all critical parameters during production. Every batch of finished product undergoes strict down the line process control monitoring which guarantees superior quality products. As a result, Pankaj International is synonymous with technology, quality and service.

    Power presses


















    ReplyDelete
  3. Great blog posted here. Precision drawell is one of the leading sfrc company. For more you can contact Precision Drawell.

    ReplyDelete
  4. thanks admin for providing very useful trick for make a wonderful website or blog, here you can find top alerts:
    tools and dies manufacturers in india

    ReplyDelete
  5. Singhania International Limited is one of the leading manufacturer and supplier of various High Tensile Fasteners, Fastener, Spring Washer, Allen Bolts, Spring Washer, Spring Steel Wire, Hex Nut, Steel Wire etc. We are specialized in providing High products made up of standard raw materials to our wide range of valuable customer base across the nation as well as International level.

    Fastener Manufacturer

    Fastener Exporter
    Fastener Supplier

    ReplyDelete
  6. Great Solution Company provides outstanding services under one roof related to legal, accounting, tax, secretarial services for an organization or individual entities at nominal charges. Our highly professional team of charter accountants, consultants and lawyers help you in getting Trademark Registration and GST Registration with ease. You can book an appointment online or by just calling us, our proficient team will help and give efficient services as per your requirement.

    GST Registration || Trademark Registration

    ReplyDelete
  7. ACMA Automechanika New Delhi 2019, the brand synonymous with the automotive aftermarket, will enter it's fourth edition in February 2019 at Pragati Maidan, New Delhi. It's last edition enabled 550 exhibitors from 17 countries to seamlessly generate business and interact with over 15,150 domestic and international visitors.

    Acma Automechanika New Delhi 2019

    ReplyDelete
  8. Nice Blog. Thanx For Sharing. Kova Fasteners is an IATF 16949:2009 & CE 15048 certified leading manufacturer of high tensile hot and cold forged fasteners in India. EN 14399 manufacturer Supplier in India, Automotive fasteners, superior fasteners.

    BS EN 14399
    High Strength Structural Bolts
    Made In India Fasteners
    BS 7419 Square Square Holding Down Bolts
    Steel Fasteners Manufacturer
    High Tensile Fasteners
    Din 931 Bolts Supplier
    Din 933 screw Supplier
    Hexagon Bolts
    Automotive Fasteners

    ReplyDelete
  9. Thanks admin for providing very useful Blog.

    Swarna Fasteners is one of the preeminent High Tensile Nut Manufacturers in India. Our experience ensures our excellence in the domain and makes it easier for us to meet up the customized requirements of our customers.

    ReplyDelete
  10. I love this blog. Always the mechanical properties should reach the requirement.Just check out, ms Chequered Plateare the best plates. You will get a large number of customers by affording a comfortable price.

    ReplyDelete
  11. Loan Opportunity Offered By Mr, Benjamin That Save My Family From Financial Bondage {lfdsloans@lemeridianfds.com}

    Hello Everyone, I am Putri Adiratnaa single mom from Jakarta, I would like to share this great testimony on how I got a loan from Mr, Benjamin, when we were driven out of our home when I couldn't pay my bills anymore, After being scammed by various companies online and denied a loan from my bank and some other credit union I visited. My children were taken by the foster care, I was all alone in the street. The day i shamefully walked into an old school mate who introduced me to Daisy Maureen. At first I told her that I am not ready to take any risk of requesting a loan online anymore, but she assured me that I will receive my loan from them. On a second thought, due to my homelessness I had to take a trial and applied for the loan, luckily for me I received a loan of $80,000.00 from Mr, Benjamin. I'm happy I took the risk and applied for the loan. My kids have been given back to me and now I own a home and a business of my own. All thanks and gratitude goes to Le_Meridian Funding Service and for the help of Mr, Benjamin for giving me a meaning to life when i had lost all hope. If you currently seeking for a loan assistance, you can contact them via: {lfdsloans@lemeridianfds.com} Or WhatsApp +1-989-394-3740

    ReplyDelete
  12. Hiya, I’m really glad I’ve found this info. Nowadays bloggers publish just about gossips and net and this is really annoying. A good website with exciting content, that’s what I need. Thanks for keeping this site, I will be visiting it.

    Visit fasteners manufacturers in india website

    ReplyDelete
  13. Great post. I was once checking constantly this weblog and I'm impressed! Extremely useful information specially the closing part. I maintain such information much. I was once seeking this specific information for a very long time. Many thanks and best of luck.
    Manufacturer of studs in nashik

    ReplyDelete
  14. Article ideas very clear . Your writing style is very unique. I very much appreciate the articles you write .Please visit to know 304L Stainless Steel fastener.

    ReplyDelete
  15. It is really very helpful for us and I have gathered some important information from this blog. You can also visit my blog at Stainless Steel 17-4ph Seamless Welded Pipe.

    ReplyDelete
  16. Your blog is awfully appealing. I am contented with your post. I regularly read your blog and its very helpful. If you are looking for the best Cold Formed IS4923 YST210 SHS, then visit Ranflex Metal.

    ReplyDelete
  17. Really helpful down to the ground, happy to read such a useful post. I got a lot of information through it and I will surely keep it in my mind. Keep sharing. If you are looking for some useful data and information regarding Duplex 2205 Plate then visit Calico Metal.

    ReplyDelete
  18. In this post, all information and suggestions are helpful for us. Keep sharing more Post like this. PVC coated SS Pipe Supplier For more information relevant things please visit Veer Impex.

    ReplyDelete
  19. Wonderful blog, Which help us to understand information easily and fast. Keep sharing more info on this 316 Stainless Steel Shim Visit Jainex Steel Impex to more relevant services.

    ReplyDelete
  20. I read your blog today, very useful knowledge about stainless steel fastener, you can also visit my log at Nitronic 60 Round Bars.

    ReplyDelete
  21. I am really impressed with your blog article, such great & useful knowledge you mentioned here. Your post is very informative. I have read all your posts and all are very informative. For more information you can visit my blog at 10000 psi ball valves.

    ReplyDelete
  22. Good and very informative post I must say. I have used many types of fasteners for my projects. Thanks for sharing this wonderful post. visit my blog Flanges for more information.

    ReplyDelete
  23. Great Article… I love to read your articles because your writing style is too good, it is very very helpful for all of us. you can visit my blog at Duplex 2205 Plate.

    ReplyDelete
  24. "Hey Just searching for some blogs and find your blog info very interesting. Sir you have very deep knowledge of fasteners Business and also like the way you describe your business. By the way we are Bhalla Auto Manufacturing Co. We are Best fasteners suppliers and bolt manufacturing company in India. We are delighted to serve you our best quality nut bolts and fasteners. We Deal in-
    Anti Theft Nut Bolt Manufacturers in India
    Center Bolt Manufacturers in India
    Flange Nut Bolt Manufacturers in India
    HSFG Washers Manufacturers in India
    T Nut Bolt Manufacturers in India
    DTI Washers Manufacturers in India
    Star Washer Manufacturers in India
    Coupling Nuts Manufacturers in India
    Banjo Bolts Manufacturers in India
    Best fasteners suppliers and bolt manufacturing company in India
    Best Coil Bolt Manufacturers India
    Linch Pin Manufacturer & Suppliers India"
















    ReplyDelete
  25. How to get to Mohegan Sun Arena in Uncasville, Connecticut - KT
    The Mohegan Sun 광주 출장마사지 Arena in Uncasville, 전라북도 출장안마 Connecticut is a 이천 출장샵 popular 서산 출장마사지 show 경상북도 출장마사지 for entertainment. The arena has been welcoming fans for over a

    ReplyDelete
  26. It's great that you provide links to further reading at the end, as it shows that you care about giving your readers the tools they need to learn more about the subject.
    UNS N08904 Plates

    ReplyDelete
  27. I felt more like I was conversing with a friend than reading an article because of your engaging writing style.
    Copper DC Tape Clips Flat Conductors

    ReplyDelete
  28. Your site has rapidly become one of my top resources for interesting and informative articles.
    Inconel 718 Fasteners

    ReplyDelete
  29. It is a pleasure to read something you wrote because it is eloquent and well-structured.
    Alloy Zeron 100 Seamless Pipe

    ReplyDelete
  30. I found this article extremely useful, and I have already put some of your advice into practice.
    309 Stainless Steel Foil

    ReplyDelete
  31. Keep up the good work on your blog; it is really appreciated. I'm always on the lookout for new viewpoints and ideas, and your blog never fails to deliver. visit Corten Steel Pipe supplier

    ReplyDelete
  32. Your site is usually a welcome source of new insights and inspiration for me.It's fantastic that you provide your readers with contrasting ideas so they can come to their own conclusions. must visit 400 BHN Steel Plates 

    ReplyDelete
  33. This post's narrative approach was really engaging, and I read it from start to finish with great interest. We additionally manufacture 303 Stainless steel Round Bar of the highest possible quality.

    ReplyDelete
  34. Your blog consistently provides me with new thoughts and points of view, which is something I am always looking for. It is wonderful that you supply your readers with contrasting points of view in order to allow them the opportunity to make their own conclusions. for plate visit Duplex S31803 Plate . 

    ReplyDelete
  35. This post's narrative approach was really engaging, and I read it from start to finish with great interest. visit UNS S30400 Flanges 

    ReplyDelete