11
$\begingroup$

In German there is the name "Buntmetalle" which means "colorful metals" for non-ferrous metals which are also not noble metals: Cadmium (Cd), Cobalt (Co), Copper (Cu), Nickel (Ni), Lead (Pb), Tin (Sn) and Zinc (Zn) I didn't find any equivalent for this in English. Is there such a labeling/categorizing in English at all?

$\endgroup$
5
  • 1
    $\begingroup$ I don't know if there is such a word in English either, but in Chinese there is a similar word, with the same literal meaning (有色金属)... $\endgroup$ – wzkchem5 Jul 13 at 7:45
  • 1
    $\begingroup$ Never heard of such a word in English, but I am not a native speaker... $\endgroup$ – S R Maiti Jul 13 at 11:01
  • 1
    $\begingroup$ Welcome to the site! This question may be better suited to Chemistry SE, but we will see if anyone here has come across a term like this. $\endgroup$ – Tyberius Jul 13 at 13:19
  • 4
    $\begingroup$ I don't think such a term exists in English. Eg no results in GS. Might be better just saying "non-ferrous, non-noble metals". German does have a word for pretty much anything... $\endgroup$ – TheSimpliFire Jul 13 at 13:23
  • 2
    $\begingroup$ Not quite what you are asking for, but other groups among metals are the "poor metals" (essentialy p-metals, containing some of your list), or refractory metals (some d-metals with high melting points, like Mo and W). $\endgroup$ – And Jul 14 at 10:52
11
$\begingroup$

I don't think it's ideal, but there is the term "base metal". There are various definitions for what is considered a base metal, but the main noble (or precious) metals are always excluded. Some definitions also exclude ferrous metals. Unfortunately, this variation in meaning means it might be better to just say "non-ferrous, non-noble", as TheSimpliFire suggested in a comment. If you want to use "base metal" as a term for this specific set of metals, it's probably best to define it yourself, or at least refer to a definition.

Wikipedia states (emphasis mine):

In contrast to noble metals, base metals may be distinguished by oxidizing or corroding relatively easily and reacting variably with diluted hydrochloric acid (HCl) to form hydrogen. Examples include iron, nickel, lead and zinc. Copper is also considered a base metal because it oxidizes relatively easily, although it does not react with HCl.

In mining and economics, the term base metals refers to industrial non-ferrous metals excluding precious metals. These include copper, lead, nickel and zinc.[2]

The U.S. Customs and Border Protection agency is more inclusive in its definition of commercial base metals. Its list includes—in addition to copper, lead, nickel, and zinc—the following metals: iron and steel, aluminium, tin, tungsten, molybdenum, tantalum, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium, rhenium, and thallium, and their alloys.

Some googling led me to a summary from this book chapter:

Base metal is a wide-ranging term that refers either to metals inferior in value to those of gold and silver, or alternatively, to metals that are more chemically active than gold, silver, and the platinum metals (AGI, 1957). Accordingly, a review of base-metal mineralogy would encompass much of the world's metal production and geology. Usage of the term “base metal” in the minerals industry is rather loose, but a common application is to the nonferrous ore metals that include copper, lead, and zinc. Thus, e.g., Kesler (1994) grouped manganese, nickel, chromium, silicon, cobalt, molybdenum, vanadium, tungsten, niobium, and tellurium as ferroalloy metals, and copper, lead, zinc, and tin as base metals.

$\endgroup$
2
  • 2
    $\begingroup$ +1. But is it really true that noble metals are always excluded? The first quote you gave says that the U.S. Customs and Border Protection agency includes copper and rhenium for example, which are sometimes included as noble metals. Maybe it's the case that, definitions of base metals "always exclude the metals that are always included as noble metals", but sometimes include metals that are sometimes listed as noble metals. You also seem to say that precious metals are always excluded, but that US agency's list includes rhenium, germanium, indium, beryllium, bismuth (3 r more precious than Au) $\endgroup$ – Nike Dattani Jul 13 at 16:42
  • 2
    $\begingroup$ @NikeDattani I guess I should've known better than to use the word 'always'... I've made an edit for now. Copper was clearly considered non-noble in the question, so I did take that for granted, but I didn't think of e.g. rhenium. As for US CBP's definition, it probably shouldn't inform scientific writing too much, but clearly there are other contexts where it applies. $\endgroup$ – Anyon Jul 13 at 17:38
4
$\begingroup$

Not only do I agree with the comments by TheSimpliFire, S R Maiti, and wzkchem5, that there is likely no word for this in English; I'll also go as far as to say that even the German word you suggested does not precisely fit your description of being "non-ferrous and non-noble".

"Buntmetalle" just means "colorful metals".

The term is applied to non-ferrous metals excluding precious metals. It so happens that most metals that are usually considered "noble metals" are also usually considered "precious metals", but the latter two terms are not "rigorously defined". For example, page 40 of this 2006 book includes copper as a "noble metal", but copper is never considered a "precious metal".

Note that copper (sometimes considered a noble metal) is one of the metals in your list of buntmetalle!

Anyon's answer suggesting the term "base metals" is probably the closest you can get, but that term is also not "rigorously defined" (just like "noble metals", "precious metals", and even "buntmetalle"), so it often includes metals like rhenium which is one of the most precious metals out of all the precious metals.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.