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Up Topic Welding Industry / General Welding Discussion / Definition of Ferrous and Non Ferrous Materials
- - By Atuuel (*) Date 09-06-2022 15:31
Hi

In ASME section 9,  " A " no. is given for Ferrous materials.
Also, ASME section 2A and 2B are divided by Ferrous and Non Ferrous materials.

What is the exact definition of Ferrous and Non Ferrous materials as per ASME?
Parent - By 803056 (*****) Date 09-07-2022 11:42
I would suggest looking at the material specification. If the predominant element listed is iron, it's a ferrous metal.

Al
Parent - - By Jim Hughes (***) Date 09-07-2022 12:43
The textbook difference between ferrous vs non-ferrous metals is the presence of iron; ferrous metals are those made of or from iron, while non-ferrous metals are those that do not contain iron. Definition.
Parent - - By Lawrence (*****) Date 09-07-2022 17:33
Here is probably the explanation you are looking for:

https://www.fassen.co/post/asme-a-numbers

"Ferrous metals or alloys are those which contain iron (ferrite), such as carbon steel, chromium steel, and stainless steel. On the periodic table of elements, iron is represented with the abbreviation of “Fe” derived from the term Ferrous. The term ferrous is derived from the Latin word “Ferrum”, which is defined as “iron” or “containing iron.” Ferrous materials are those represented by a specification that begins with “SA”, such as SA-516, SA-335, and SA-240.

Non-Ferrous metals are metals or alloys that do not contain iron (ferrite) in appreciable amounts, such as aluminum, Inconel, Hastelloy, and titanium. Non-ferrous metals are those represented by a specification that begins with “SB”, such as SB-209, SB-444, SB-622, and SB-338.
"
Parent - - By Atuuel (*) Date 09-10-2022 05:56
e.g. SB 424  UNS N08825
Appreciable amount of Fe is present in it. (Appreciable, dominating etc. like terms are creating confusion in such cases.)
Fe 22% min. but it is non ferrous.
Parent - By 803056 (*****) Date 09-14-2022 00:41
That's because the predominant element is Nickel. It contains Fe, but it is considered an alloying constituent.

Al
Up Topic Welding Industry / General Welding Discussion / Definition of Ferrous and Non Ferrous Materials

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