These 3 pages provide a superb summary of many of the major 
characteristics of a wide range of resistance wires.
[Sense resistor and Igniter makers may find this useful].

Comparative names among manufacturers

        http://www.mwswire.com/resist2.htm

Major characteristics
resistivity, tensile strength chemical composition, coeff lin exp, SG, 
magnetic attraction, melting point

        http://www.mwswire.com/resist1.htm

Nominal ohms per linear foot by type and wire gauge or diameter

        http://www.mwswire.com/resist3.htm



Kanthar's "Cuprothal 294" is what was traditionally known as 
Constantan.
It's solderability is good.

MWS's names give less clue to material but included the resistivity 
(as ohms/cmf) in the name which is highly useful as this varies 
extremely widely. Even Constantan alloys can vary by a factor of 10 
depending on the Cu-Ni ratio.




        Russell

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist