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A325 and A490 Structural Bolts Standard Fasteners
Special Fasteners
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A325 and A490 Structural Bolts ASTM A325 bolts are supplied as plain or galvanized (mechanical or hot dipped). We offer A325 bolts as Type 1, Type 3 (weathering steel), or A325T (thread-to-head, in lengths up to four times diameter, and 105 ksi over 1". The Type 1 bolts are made as medium steel with sufficient harden ability to obtain the required properties. The Type 3 bolts are made from composition "A" from Table 2 in the ASTM A325 specification (medium carbon steel with Copper, Nickel, and Chromium additions for weathering purposes). Dimensions are a specified for Heavy Hex Structural Bolts in ANSI/ASME B18.2.6 and threads are UNC (Unified Coarse) per ANSI/ASME B1.1. A325M METRIC STRUCTURAL BOLTS ASTM A325M bolts are supplied as plain or galvanized (mechanical or hot dipped). The chemical and mechanical properties are given in ASTM F568 ("Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners"). The ASTM A325M bolt is equivalent to the properties of an ASTM F568 class 8.8 bolt. These properties are essentially identical to class 8.8 in ISO 898/I. Surface discontinuity limits are specified in ASTM F788/F788M. The ASTM A325M bolts are produced to the dimensions for heavy hex structural bolts as specified in ANSI B18.2.3.7M. The threads are rolled as specified in ANSI B1.13M, to a metric coarse thread with grade 6g tolerance.
To order standard fasteners, a sales representative Repeat customers may fax your orders to (336) 852-9730.
A490 STRUCTURAL BOLTS ASTM A490 bolts are supplied as plain (black) only. These bolts are heat treated to a tensile strength range of greater than 150 ksi. Medium carbon, alloy steel is used for these bolts. Dimensions are as specified for Heavy Hex Structural Bolts in ANS/ASME B1.1. more on applications >
Atlantic Fasteners, Inc PO BOX 19066 Greensboro, NC 27419-9066 (336) 852-0700 or (800) 233-6932 Fax: (336) 852-9730
http://www.afast.com/StructuralBolts.html
11/12/2011
What is 8.8 grade steel
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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 2
(N/mm )/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
Answer these
What does it mean when it does connecti do on call of duty black
meaning that a grade 8.8 bolt has a nominal ultimate tensile strength (UTS) of 800N/mm2 (or Mpa) and a nominal
In: Call of Duty Black Ops
yield strength of 640N/mm2 (or Mpa). 2
These values are not expressed in Kg/mm 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.
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First answer by Quirkyquantummechanic. Last edit by Paul Schilbach. Contributor trust: 1 [recommend contributor]. Question popularity: 2 [recommend question]. [] Like
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Relevant answers: What is the density of high tensile steel grade 8.8? It is not 12.9 as previously stated.There is no specific steel grade used in grade 8.8 fasteners meaning that the exact density will vary from manufacturer to manufacturer.As a general rule of thumb,...
Is stainless steel grade 304 and 8.8 is different? I assume you mean 18-8.18-8 steel is stainless steel with about 18% chromium amnd 8% nickel. 304 is in that category and is indeed an 18-8 steel. There are other 18-8 steels, such as 301 and 302, so...
Can lower grade of SS steel be used for making higher grade of SS steel? Yes, higher grade stainless is achieved by cold working a lower grade stainless steel
What is the grade of high tensile steel? Q-145
http://wiki.answers.com/Q/What_is_8.8_grade_steel
11/12/2011
What is 8.8 grade steel What are the different Answer:
Page 2 of 2
grades of steel?
The strength of steel is graded based on it's yield strength- the point that it will have a permenant deformation from a load. Steel will be graded however an engineer requires it to be in order to...
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Pipe Hardware www.pipingtech.com Manufacturer of Clamps, U Bolts, Turnbuckles, Rods, hangers, & More
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Answers.com > Wiki Answers > Categories > Technology > Engineering > Civil Engineering > What is 8.8 grade steel?
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11/12/2011
Special Fasteners
Page 1 of 1 Home
A325 and A490 Structural Bolts ASTM A325 bolts are supplied as plain or galvanized (mechanical or hot dipped). We offer A325 bolts as Type 1, Type 3 (weathering steel), or A325T (thread-to-head, in lengths up to four times diameter, and 105 ksi over 1". The Type 1 bolts are made as medium steel with sufficient harden ability to obtain the required properties. The Type 3 bolts are made from composition "A" from Table 2 in the ASTM A325 specification (medium carbon steel with Copper, Nickel, and Chromium additions for weathering purposes). Dimensions are a specified for Heavy Hex Structural Bolts in ANSI/ASME B18.2.6 and threads are UNC (Unified Coarse) per ANSI/ASME B1.1. A325M METRIC STRUCTURAL BOLTS ASTM A325M bolts are supplied as plain or galvanized (mechanical or hot dipped). The chemical and mechanical properties are given in ASTM F568 ("Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners"). The ASTM A325M bolt is equivalent to the properties of an ASTM F568 class 8.8 bolt. These properties are essentially identical to class 8.8 in ISO 898/I. Surface discontinuity limits are specified in ASTM F788/F788M. The ASTM A325M bolts are produced to the dimensions for heavy hex structural bolts as specified in ANSI B18.2.3.7M. The threads are rolled as specified in ANSI B1.13M, to a metric coarse thread with grade 6g tolerance.
To order standard fasteners, a sales representative Repeat customers may fax your orders to (336) 852-9730.
A490 STRUCTURAL BOLTS ASTM A490 bolts are supplied as plain (black) only. These bolts are heat treated to a tensile strength range of greater than 150 ksi. Medium carbon, alloy steel is used for these bolts. Dimensions are as specified for Heavy Hex Structural Bolts in ANS/ASME B1.1. more on applications >
Atlantic Fasteners, Inc PO BOX 19066 Greensboro, NC 27419-9066 (336) 852-0700 or (800) 233-6932 Fax: (336) 852-9730
http://www.afast.com/StructuralBolts.html
11/12/2011
What is 8.8 grade steel
Page 1 of 2
Enter question or phrase...
Search:
All sources
Community Q&A
Reference topics
Browse: Unanswered questions New questions New answers Reference library
Sign in using:
What is 8.8 grade steel? In: Civil Engineering, Mechanical Engineering, Architecture [Edit categories]
Answers.com : name
Stainless Steel Material
www.chiafar.com We Provide High Quality Stainless Steel Materials. Welcome To Us!
Stainless steel fasteners
Lost ?
www.lederer-online.com from one of Europe´s most specia lised suppliers for screws & nuts.
Ads
me
Improve
Sign in Create
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 2
(N/mm )/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
Answer these
What does it mean when it does connecti do on call of duty black
meaning that a grade 8.8 bolt has a nominal ultimate tensile strength (UTS) of 800N/mm2 (or Mpa) and a nominal
In: Call of Duty Black Ops
yield strength of 640N/mm2 (or Mpa). 2
These values are not expressed in Kg/mm 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.
Did the leaders of the revolts to the Spaniards manifest nationalism? In: History Did King Louis XVI cheat on his wife? In: French History What are the process of making beer? In: Drinks and Beverages
Recent recommendations
Euro Bolts (Din 15237)
www.go4b.co.uk - Elevator Bolts & Washers - Available from stock.. Order now
Titanium Reference on DVD www.asminternational.org Complete Info on Titanium & Alloys New - Authoritative & Searchable Facebook social plugin
ASCE Online Library
www.ascelibrary.org Free search 600,000 pages All areas of civil engineering
Ads
Home Welcome Recent site activity Help center Browse categories Random question Promoted questions Community forum
First answer by Quirkyquantummechanic. Last edit by Paul Schilbach. Contributor trust: 1 [recommend contributor]. Question popularity: 2 [recommend question]. [] Like
Be the first of your friends to like this.
Can you answer these Civil Engineering questions? Is filler is necessary in bituminous concrete?
Answer it!
What is the difference between cutback bitumen and bitumen emulsion?
Answer it!
What are the companies in civil in bhubaneswar? How can you work on built 3D modeling eg creating a function automatically marks the points you want? What type ofbridge is the Chengyang bridge?
Answer it! Answer it! Answer it!
Relevant answers: What is the density of high tensile steel grade 8.8? It is not 12.9 as previously stated.There is no specific steel grade used in grade 8.8 fasteners meaning that the exact density will vary from manufacturer to manufacturer.As a general rule of thumb,...
Is stainless steel grade 304 and 8.8 is different? I assume you mean 18-8.18-8 steel is stainless steel with about 18% chromium amnd 8% nickel. 304 is in that category and is indeed an 18-8 steel. There are other 18-8 steels, such as 301 and 302, so...
Can lower grade of SS steel be used for making higher grade of SS steel? Yes, higher grade stainless is achieved by cold working a lower grade stainless steel
What is the grade of high tensile steel? Q-145
http://wiki.answers.com/Q/What_is_8.8_grade_steel
11/12/2011
What is 8.8 grade steel What are the different Answer:
Page 2 of 2
grades of steel?
The strength of steel is graded based on it's yield strength- the point that it will have a permenant deformation from a load. Steel will be graded however an engineer requires it to be in order to...
Recent questions What are the advantages of Term life insurance
Related ads:
What are the advantages of two way radios over mobile phones
Federal Steel Supply, Inc
What are the advantages of the Apple Ipad2 over the original
www.FedSteel.com Carbon and chrome-moly steel pipe Heavy wall tubular goods from stock
What are the advantages of used car loans
X120Mn12 Steel Plates
www.hadfield-manganese-steel.com High Manganese Steel Plates Mn13 Mn 12-14% (Hadfield grade)
What are the advantages of taking a car cruise as opposed to a regular cruise
Pipe Hardware www.pipingtech.com Manufacturer of Clamps, U Bolts, Turnbuckles, Rods, hangers, & More
Featured guides How To Draft Sales Contract Forms How To Compare Rental Cars
Research your answer
Low Carb Food List
Search
How to Buy a House Top Genealogy Software
Answers.com > Wiki Answers > Categories > Technology > Engineering > Civil Engineering > What is 8.8 grade steel?
Ads by Google
Civil Engineering
Stainless Steel
Carbon Steel Grades
Bolt Grade
Site
Company
Legal
Tools
Community
Updates
Sitemap ReferenceAnswers WikiAnswers VideoAnswers blufr Guides
About Jobs Press
of Use IP Issues Disclaimer
1-Click Answers AnswerTips Apps/Add-ons
Guidelines Reputation Roles Help
Email Watchlist RSS Blog
International sites
English
Deutsch
Español
Français
Italiano
Tagalog
Copyright © 2011 Answers Corporation
http://wiki.answers.com/Q/What_is_8.8_grade_steel
11/12/2011
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