what is the definition of "Ferrous Metal"
what is the definition of "Ferrous Metal"
(OP)
what is the definition of "Ferrous Metal". I am trying to understanding if Austenitic stainless is Ferrours Metal or not.
I searched on the internet which defines "Ferrous Metal" as metal contain a certain percentage of Iron. Therefore Austenitic stainless steel is Ferrous Metal.
Please advise.
I searched on the internet which defines "Ferrous Metal" as metal contain a certain percentage of Iron. Therefore Austenitic stainless steel is Ferrous Metal.
Please advise.





RE: what is the definition of "Ferrous Metal"
RE: what is the definition of "Ferrous Metal"
Joe Tank
RE: what is the definition of "Ferrous Metal"
A.R. "Andy" Nelson
Engineering Consultant
anelson@arnengineering.com
RE: what is the definition of "Ferrous Metal"
RE: what is the definition of "Ferrous Metal"
ferrous. Metallic materials in which the principal component is iron.
Austenitic stainless steel is a ferrous alloy.
RE: what is the definition of "Ferrous Metal"
RE: what is the definition of "Ferrous Metal"
http
there is a slide (11) with the classification of metal in ferrous and non-ferrous.
as you can see as someone else explained the principal component is iron. As an example the Nickel Alloy are alloy with at least approx 30% of Ni
S.
Corrosion Prevention & Corrosion Control
RE: what is the definition of "Ferrous Metal"
Ferrous is improperly used as a synonym for 'magnetically responsive' where 'magnetically responsive' is improperly used to mean that it will stick to a magnet. (If you are not familiar with it look up the tables for 'magnetically responsive' in the CRC handbook.)
'When I use a word,' Humpty Dumpty said, in a rather scornful tone,' it means just what I choose it to mean, neither more nor less.'
tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: what is the definition of "Ferrous Metal"
Austenitic stainless steels are "ferrous" in the sense they contain iron
"Ferrous, in chemical science, indicates a bivalent iron compound (+2 oxidation state) (as opposed to ferric, which indicates a trivalent iron compound (+3 oxidation state)).[1]
Outside of chemical science, ferrous is an adjective used to indicate the presence of iron.[1] The word is derived from the Latin word ferrum (iron).[2] Ferrous metals include steel and pig iron (which contain a few percent of carbon) and alloys of iron with other metals (such as stainless steel.)"
For stainless steels go to
http
luis marques
RE: what is the definition of "Ferrous Metal"
At one time the rules used for assigning UNS numbers required at least 50% Fe for a S number. Austenitic stainless grades such as AL-6XN and 904L have N numbers, even though they are mostly iron. (and they are being moved from ASTM B specification to A in recognition of this)
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Plymouth Tube
RE: what is the definition of "Ferrous Metal"
I nevertheless gave a "star" to metengr, as he has at least quote a contemporary and I suspect some somewhat carefully considered definition from a quite notable authority, the American Society of Metals, or ASM. I believe this is incidentally verbatim the exact same definition I noticed profered by another perhaps quite venerable institution, the American Foundry Society or AFS. I have noticed however that you may have to look very hard to find any sort of consistent definition in many documents of another quite well-known institution, ASTM, even though they have many numerous fine terminology- type standards, and the word is even used in the text and even titles of some ASTM standards! Perhaps this is nothing else signifies the difficulty of this explanation? I beleive ASTM does publish one or more definitions of "non-ferrous metals", which it appears they say means basically metals that do not contain iron except as an impurity (ah Ron, a great many metals and other materials most would consider "non-ferrous" do contain or may contain at least a little bit of "iron") .
Now, if we could just define exactly what is meant e.g. by ASM and AFS et al in same by "principal" or "primarily" etc. we might have it made (but it would appear the long definitions of these words from the nearly half foot thick unabridged Webster's I have didn't nail down many of the exact portions or fractions etc. I have seen written so far on this thread -- for this reason, his inquisition, and the excellent "Through the Looking Glass" quote by Lewis Carroll from tomwalz, I have given him a star as well for perhaps a quite apropos quotation)!
RE: what is the definition of "Ferrous Metal"
RE: what is the definition of "Ferrous Metal"
RE: what is the definition of "Ferrous Metal"
Ferrous Metas are further subdvided into more categories:-
(1)Ferromagnetic Materials : That have megentic property
and for which magnetic permeability is undetermined.
These materials are attracted by permanent Magnets.
(2)Non Ferromagnetic Material: The one that are nonmegntic in nature and can not be attracted by the magnet. Their Magnetic permeability is 1. Austenitic steels & austenitic alloys fall in this category. Like SS304, 308, 310, 316, 321, 347 etc.
(3) However, all Stainless can not be put under non ferromagnetic steels. There are martensitic stainless steels that contain Cr % are ferrromagnetic magnetic.
Like SS410, SS420 etc.
RE: what is the definition of "Ferrous Metal"
One of my favorite examples of alloy naming is R20033 (alloy 33) at 33%Cr, 31%Ni, 2%Mo, bal Fe (about 32%) this is the only wrought Cr based alloy that there is. Cr is the dominant alloy component.
People tend to commingle discussions of ferrous material and magnetism just because the words are similar and we think of the relationships in everyday life. As one who has worked in the magnetics industry let me assure you that there is almost no relationship.
I can make highly ferro-magnetic pieces of 300 stainless for you. And I can show you alloys with no iron that are highly ferro-magnetic
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Plymouth Tube
RE: what is the definition of "Ferrous Metal"
All terms are slippery. Even the most carefully described terms are slippery.
I think that giving a formal definition, as Metengr does so well, is excellent. I think that the less formal, experience based answers also add value.
I used to do in-plant consulting on failure analysis. Often the engineers and the people on the plant floor were describing the same thing but the language was entirely different. On the good jobs I just interpreted so that both were right. On bad jobs they argued much more about the language than the situation and nothing got fixed.
When I was in grade school we were taught that those silly ancients didn't know what was in space so they called it 'ether' or 'aether' or phlogiston. Now, when we don't know what is in space, we call it 'dark matter' and 'dark energy'. It is still the same thing (or the same nothing).
Also I thought that ASM as American Society for Metals was good and ASM as American Society for Materials was even better. I am not that thrilled with just plain ASM.
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: what is the definition of "Ferrous Metal"
My favorite source of definition - - http://en.wikipedia.org/wiki/Ferrous
At 74th year working on IR-One PhD from UHK - - -
RE: what is the definition of "Ferrous Metal"
Try as we might for exactness, absolute truths, firm principles, and clear and undeniable terms and specifications, in ways I guess it is possible even some scientific or technical work is sometimes eerily similar, as it must also deal at least somewhat with words and maybe even symbols and variables with arguably duplicitous or variable interpretations of folks (and maybe as you say in proceedings that become adversarial, no less argued by stubborn folk).
As I agree deep down at least most people still want to do "right", I also agree it is probably best in both fields to find common ground as best one can. [I hope you were at least thrilled with your "star".] ;>)
RE: what is the definition of "Ferrous Metal"
Ferrous contains iron usually steel but not limited to!
Non ferrous does not contain iron, such as aluminum, gold , copper, silver & so on
simple. :) no slipery words, sorry could not help it. :)
RE: what is the definition of "Ferrous Metal"
The problem with your definition is that there are many examples of non-ferrous alloys that do contain iron in prescribed amounts: aluminum die casting alloys, some titanium alloys, many nickel-based alloys, etc.
RE: what is the definition of "Ferrous Metal"
But there is no question that these metals in their pure form are Non - ferrous
As I had noted ferrous is not limited to steel.
that seems to be the debate, when does an alloy become ferrous.
RE: what is the definition of "Ferrous Metal"
Yes, I always get a little thrill when I get a star. If it came from you then I thank you for it. I have a great deal of respect for the members here and their positive recognition is nice, indeed.
Then there is the fact that I am the boss at work and an expert in my field. (Think of it as the biggest frog in a two frog pond.) This means that I get very little correction and it is rather easy to go merrily down the most absurd paths without anyone correcting me. This forum is one of the few places where I get thoughtful, polite, helpful amendments to my comments that are based on solid facts supported by citations or direct personal experience.
In conclusion, I appreciate all the comments and the fact that they are invariably down in the most gracious, sophisticated manner.
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: what is the definition of "Ferrous Metal"
"A term that has been used some loosely or with homonymy." and/or
"A term that perhaps should not be used too loosely, or without further explanation, in any important writings (in other words there should be further definitive explanation, to make sure the reader knows as precisely as possible what types/classes of metals/alloys/composites etc. to which the author is referring)."
[I noticed incidentally that there is even apparently actually a sort of formal procedure for handling at least some types of known "homonyms" though in another science e.g. at http://en.wikipedia.org/wiki/Homonym_(biology) .]
RE: what is the definition of "Ferrous Metal"
All these slippery word variations reminds me of the Genie granting a wish to a Texan.
The Texan wished to become a "stud" in Houston.
His final thoughts were, "Its sure going to get boring standing here holding this sheet rock."
At 74th year working on IR-One PhD from UHK - - -
RE: what is the definition of "Ferrous Metal"