Taña Dalglish Mar 11, 2012:

@ Transworldwide For what it is worth, this very issue came up in a Russian forum (unfortunately, I don't speak Russian, but I did a "Google translation" so this is by no means "official", but here goes:
http://forum.lingvo.ru/actualthread.aspx?tid=136452

[2] Re: Part used materials [new]
Мюмла 29 июл 11, 23:12 Ответить | Ответить с цитированием
Говорят, говорят "part" = "partially". Аналогия с half. Например, a mermaid is half woman, half fish. То же самое. The material is part used, part new.

Unofficial translation (I don´t speak Russian):
[2] Re: Part used materials [new]
Myumla July 29th 11, 23:12 Post Reply | Quote
They say, they say "part" = "partially". The analogy with the half. For example, a mermaid is half woman, half fish. The same. The material is part used, part new.
Food for thought! HTH.

CARMEN MAESTRO Mar 11, 2012:

@Transworld La misma duda se me planteó a mí, pero ese es el único sentido que se me ocurre! Saludos

CARMEN MAESTRO Mar 11, 2012:

@ Juan Pablo En mi opinión, para tener el sentido que tu dices debería ser "used-part materials", pero según aparece el término, "part" complementa a "used". Saludos!