What is ASTM A47?ASTM A47 is a Specification for Ferritic Malleable Iron Castings.
CategoryWrought Iron, Cast Iron, and Malleable Iron
ScopeThis specification covers ferritic malleable castings for general engineering usage at temperatures from normal ambient to approximately 400°C (750°F).
Ok let's start with ASTM A47 chemical composition.
The chemical composition of the iron shall be such as to produce the structural and mechanical properties required by this specification.
Learn more about chemical composition.
Now it's the mechanical properties turn:
Grade 3251032500 psi min.
Learn more about what is yield strength.
Grade 3251050000 psi min.
Learn more about what is tensile strength.
Elongation (min.) 50 mm0.1.
Learn more about what is elongation.
Reduction of Area (min. %)Not Required.
Learn more about reduction of area.
Grade 32510156 HB max.
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 A47 currently ranks 153 in my yield strength index. This means there are other 152 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 A47 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 ReferencesA 153 Specification for Zinc Coating (Hot-Dip) on Iron
and Steel Hardware
A 247 Test Method for Evaluating the Microstructure of
Graphite in Iron Castings
A 644 Terminology Relating to Iron Castings
E 8 Test Methods for Tension Testing of Metallic Materials
E 10 Test Method for Brinell Hardness of Metallic Materials
E 18 Test Methods for Rockwell Hardness and Rockwell
Superficial Hardness of Metallic Materials
E 140 Hardness Conversion Tables for Metals