Talk:Nichrome

The figures in the table of properties were pretty hard to come by, and seem to show a wide range because of the dependence on physical composition. These figures were converted from selected websites. Perhaps a reference to a proper materials reference manual would be useful at some stage.

Soldering NiCr wire

Is there a technique/process for soldering NiCr wire to another object (e.g. gold plated pad on a circuit board)? The very nature of NiCr seems to preclude solder wetting.

Nichrome is almost always connected by some sort of mechanically-tight connection such as crimping, riveting, etc or by welding.

Atlant (talk) 16:45, 30 January 2008 (UTC)

I soldered some fine Nichrome wires to a PCB recently. It required: scraping the wire clean, pre-tinning a length of wire using acid flux, building a solder mound on the copper pad on the PCB, covering the mound with excess RMA flux, then pushing the wire into the mound with a brief soldering-iron push. Still didn't work well, and in fact the wire often de-wetted, un-tinned, spontaneously. Soldering in an oxygen-free atmosphere would help greatly. You can see why crimping or welding get used. jimswen (talk) 08:39, 8 August 2009 (UTC)

Nichrome heating

Is there any data about the use of nichrome heating, for instance: a nichrome element in the cables of electric kettles, geysers and spiral stove plates? -someone asked sometime

Good table of the basic application parameter data at http://www.wiretron.com/nicrdat.html. -96.237.8.86 (talk) 23:02, 18 May 2009 (UTC)

And good tables listed here:

• http://www.resistancewire.com/Html/techinfo.html Resistance wire technical information tables

-71.174.179.130 (talk) 13:07, 19 May 2009 (UTC)

Protective layer of oxidation

For heating, resistance wire must be stable in air when hot. Nichrome wire forms a protective layer of chromium oxide.

We need an expert to tell us about this layer of oxidation! Exactly what is it, what are its electrical and thermal conductivity properties, and how to make connections of various types -- solder, weld, crimp, etc -- through it? -71.174.179.130 (talk) 13:07, 19 May 2009 (UTC)

Expensive alloy

I was under the impression that nichrome is expensive because of the chromium, not the nickel... <http://www.hypertextbook.com/facts/2007/HarveyKwan.shtml> Tobytb (talk) 15:59, 7 June 2009 (UTC)

Units

Should we convert properties to standard units? For example for density it should be in mg/cm3 --JayDub (talk) 17:47, 9 July 2009 (UTC)

page or matrix of vendor technical references for alloys?

For alloys such as Nichrome, it seems the best / most-available references are vendor technical data. Different vendors cover different sets of alloys or properties, and Wikipedia necessarily has a growing number of alloy pages. So I'm noticing that it would be difficult to ever finish inserting all applicable refs in all the alloy pages that need them. Is there an indirect or collected way to do it? Such as a page with a table or list of alloy references, each one of which could be easily ref'd in each associated alloy article? --jimswen (talk) 08:52, 8 August 2009 (UTC)