What is ASTM A449?ASTM A449 is a Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use.
CategorySteel Bolting Materials
ScopeThis specification covers quenched and tempered steel hex cap screws, bolts, and studs.
Ok let's start with ASTM A449 chemical composition.
Type 1 Carbon Steel
C0.30 - 0.52
Si0.15 - 0.30
Learn more about chemical composition.
Now it's the mechanical properties turn:
Machined specimens (up to 1 in.)92 ksi min.
Learn more about what is yield strength.
Machined specimens (up to 1 in.)120 ksi min.
Learn more about what is tensile strength.
Elongation (min.) 4D0.14.
Learn more about what is elongation.
Reduction of Area (min. %)0.35.
Learn more about reduction of area.
up to 1 in.253 to 319 HB
Learn more about what is hardness.
Allowable StressDepends on the project (And its factor of safety).
Learn more about the what is allowable stress.
My Material's RankWhile engineers will often look for the cheapest material they can use, I took a different approach to material's selection to help newbie students.
I ranked materials according to their yield strengths and ASTM A449 currently ranks 152 in my yield strength index. This means there are other 151 materials that are more resistant.
Note: I've analysed 134 materials in order to create an yield strength index. Check my astm material's comparison post for more details.
ASTM ClassroomAre you having trouble understanding the basics of ASTM?
What is the difference between Code, Standard & Specification?
This video will walk you through:
CitationWhen you need to include a fact or piece of information in an assignment or essay you should also include where and how you found that piece of information.
That gives credibility to your paper and it is sometimes required in higher education.
To make your life (and citation) easier just copy & paste the information below into your assignment or essay:
Luz, Gelson. ASTM A449 Properties (Chem., Mech. & Rankings). Materials Blog. Gelsonluz.com. dd mmmm. yyyy. <URL>
Now replace dd, mmmm and yyyy with the day, month, and year you browsed this page. Also replace URL for the actual url of this page (The < and > stay, ok?). This citation format is based on MLA.
Other ReferencesA563 Specification for Carbon and Alloy Steel Nuts
A751 Test Methods, Practices, and Terminology for Chemical
Analysis of Steel Products
B695 Specification for Coatings of Zinc Mechanically Deposited
on Iron and Steel
D3951 Practice for Commercial Packaging
F436 Specification for Hardened Steel Washers
F606 Test Methods for Determining the Mechanical Properties
of Externally and Internally Threaded Fasteners,
Washers, Direct Tension Indicators, and Rivets
F788/F788M Specification for Surface Discontinuities of
Bolts, Screws, and Studs, Inch and Metric Series
F1470 Practice for Fastener Sampling for Specified Mechanical
Properties and Performance Inspection
F1789 Terminology for F16 Mechanical Fasteners
F2329 Specification for Zinc Coating, Hot-Dip, Requirements
for Application to Carbon and Alloy Steel Bolts,
Screws, Washers, Nuts, and Special Threaded Fasteners
G101 Guide for Estimating the Atmospheric Corrosion Resistance
of Low-Alloy Steels