BTW, the Celani's wires are based on Isotan (Constantan trademark): http://www.isabellenhuette.de/fileadmin/content/widerstandslegierungen/ISOTA N-ISABELLENHUETTE-R.pdf?PHPSESSID=e5f77mrb8kiksmi0afimqcnub4
The Isotan contains 1% of Mn. Celani didn't say that Mn plays a magic role in his wire. Arnaud
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