TC beyond Ni200: Nickel Purity, Dicodes; Ti, SS, Resistherm NiFe30; Coefficient of Resistance

[dwcraig1]

Crud. I have three sizes of "NiFe52" on the way from Unkamen that I WAS looking forward to playing with. (sigh) I suppose I'll need to write them and ask for a replacement shipment of what I ACTUALLY ordered.
(groan)

I'll be looking forward to your comments on it when you receive it as to whether they match up with mine. I am most sure about it but still want to hear what you think about it. Perhaps it is some type of NiFe like NiFe10 or something, don't know but it behaves just like an SS alloy.
(or would that be NiFe90, don't know)

 

[JimScotty0]

Crud. I have three sizes of "NiFe52" on the way from Unkamen that I WAS looking forward to playing with. (sigh) I suppose I'll need to write them and ask for a replacement shipment of what I ACTUALLY ordered.
(groan)

I also have 3 sizes that shipped and should be here on Monday. Bummer!

 

[GeorgeS]

I'll be looking forward to your comments on it when you receive it as to whether they match up with mine. I am most sure about it but still want to hear what you think about it. Perhaps it is some type of NiFe like NiFe10 or something, don't know but it behaves just like an SS alloy.
(or would that be NiFe90, don't know)

My order has not shipped yet. The pre shipment confirmation has:

1x Preorder SALE - Kanthal NiFe52 Wire - 100% Guarantee - You Pick Gauge 24, 26, 28 - 28 Gauge 40 Feet for $7.46 each
1x Preorder SALE - Kanthal NiFe52 Wire - 100% Guarantee - You Pick Gauge 24, 26, 28 - 26 Gauge 35 Feet for $7.46 each
1x Preorder SALE - Kanthal NiFe52 Wire - 100% Guarantee - You Pick Gauge 24, 26, 28 - 24 Gauge 30 Feet for $7.46 each

I just responded to the email that included the above asking for a detailed data sheet (along with TCR value) as others are reporting that the wire they received has properties more like SS rather than NiFe52.

 

[TheotherSteveS]

seems to be generally accepted that dry burning 52/48 is fine but what is the evidence for this???

 

[jazzvaper]

seems to be generally accepted that dry burning 52/48 is fine but what is the evidence for this???

SNAPPED LEGS...sooner than later.

You can hear the snap when it happens.

When I began to make this recommendation I said, 'until someone proves me wrong'...

Here's the rhetorical question: Would you vape Kanthal w/o dry-burning?

 

[TheotherSteveS]

SNAPPED LEGS...sooner than later.

You can hear the snap when it happens.

When I began to make this recommendation I said, 'until someone proves me wrong'...

Here's the rhetorical question: Would you vape Kanthal w/o dry-burning?

not clear what you are saying to be honest...I have using limited dry heating while making coils and it seems fine but who knows I guess..

 

[2legsshrt]

I'm bummed that unkamens nife is actually ss but glad I waited to order it until you guys got a chance to test it out. Thanks for the feedback @dwcraig1 .

Me too

 

[Hanha]

Been testing a single coil ss grade 317 in few RDAs with evic vtc mini and it stays in TC mode.
Actually works really well.
Got to try in tanks also.
Coils read at .44 and .56.

 

[dwcraig1]

Re: Unknown wire.
Just got another email from Ralph, he's working on it. Should have info from the mill he used on Monday

 

[TheotherSteveS]

I'll be looking forward to your comments on it when you receive it as to whether they match up with mine. I am most sure about it but still want to hear what you think about it. Perhaps it is some type of NiFe like NiFe10 or something, don't know but it behaves just like an SS alloy.
(or would that be NiFe90, don't know)

well is it magnetic?? NiFe alloys are I think (NiFe52 is for sure), but austenitic SS like SS316 isnt...I think..lol!

 

[JimScotty0]

I have a question for the group. How would you use Steam Engine's Wire Wizard if you wanted to use twisted wire, not clapton or parallel wire with 2 or 3 different metals? I am interested in the TCR value.

Let's say I want to tightly twist round 24ga Ti with round 32ga Kanthal A1 which is actually a coil that I use regularly. I could use clapton with the 24ga Ti as the core and the 32ga Kanthal A1 as the wrap. But what should I use for the wrap spacing? Zero?

Here is what it looks like:

The problem with using the clapton formula is that the Ti wire length with this coil would be 102mm vs the Kanthal wire length at 1,319mm making the Kanthal A1 wire length at around 13x the length of the Ti wire. I would guess that the smaller gauge Kanthal A1 would be somewhere around 1.5x as much length, but not 13x.

If I use the parallel formula it changes things dramatically as follows:

The wire length goes from the 102mm for the Ti to 81mm and the TCR changes from 3634 to 3320.

Any suggestions on how to use the Wire Wizard for such twisted TCR calculations?

 

[dwcraig1]

well is it magnetic?? NiFe alloys are I think (NiFe52 is for sure), but austenitic SS like SS316 isnt...I think..lol!

Yes it's magnetic.
My Dicodes NiFe30 is also ( it works temp wise as it should )

Edit: and most if not all the SS alloys are not magnetic but otherwise this "unknown" wire behaves just like SS.
Actually I wish that I have it all wrong but that's pretty doubtful

 

[TheotherSteveS]

Yes it's magnetic.
My Dicodes NiFe30 is also ( it works temp wise as it should )

Edit: and most if not all the SS alloys are not magnetic but otherwise this "unknown" wire behaves just like SS.
Actually I wish that I have it all wrong but that's pretty doubtful

its very strange. what the hell is this stuff????

 

[pbanj]

its very strange. what the hell is this stuff????

More importantly is it safe to vape with lol

 

[funkyrudi]

Yes it's magnetic.
My Dicodes NiFe30 is also ( it works temp wise as it should )

Edit: and most if not all the SS alloys are not magnetic but otherwise this "unknown" wire behaves just like SS.
Actually I wish that I have it all wrong but that's pretty doubtful

Not all SS types are magnetic. Austenitic steel is not magnetic, but a deformation can make it magnetic. ( AISI 303, 304, 304L, 316,316L+LN)
Ferritic steel is magnetic. AISI 317 is a austenitic ferritic steel and is magnetic. (AFAIK)

Unkamen NiFe52
It´s a PITA that most shops, even Zivipf, don`t write who made their wires. In case of Zivipf´s NiFe wires it was easy to find out, but Thomas didn`t tell me first. After I told him that it is from Kanthal , he confirmed this. Kanthal´s NiFe30/70 has a complete different TCR than the Dicodes NiFe30 ( 0.0051 to 0.0035 ).

 

[dwcraig1]

Not all SS types are magnetic. Austenitic steel is not magnetic, but a deformation can make it magnetic. ( AISI 303, 304, 304L, 316,316L+LN Ferritic steel is magnetic. AISI 317 is a austenitic ferritic steel and is magnetic. (AFAIK)

Unkamen NiFe52
It´s a PITA that most shops, even Zivipf, don`t write who made their wires. In case of Zivipf´s NiFe wires it was easy to find out, but Thomas didn`t tell me first. After I told him that it is from Kanthal , he confirmed this. Kanthal´s NiFe30/70 has a complete different TCR than the Dicodes NiFe30 ( 0.0051 to 0.0035 ).

It says Kanthal NiFe52 on it's spool, the label appears to have been created by Unkamen

 

[dwcraig1]

I'm using it on the Dicodes set at 105 (so I guess 0.00105)

 

[GeorgeS]

If I recall the 'swan song' of NiFe52 was the (on paper) 'triple hit':

• higher wire resistance - can use larger diameter wire
• higher TCR - more accurate TC vape
• safe to dry burn

While the above is all well and good I've been mostly happy and satisfied with the Unkamen SS430. Yesterday I did my 1st ever dryburn/clean of one of my SS430 coils. As I've gotten fairly good at wick+coil replacement the time saved was not all that much but I was happy I was able to do it. I'm also happy that the +1.0 ohm coils I've made with the SS430 can be fired on everything from my old 15W VV/VW mods to TC mods and anything in between. You'd be amazed how much battery life I get out of my 1.8ohm build being driven by a mere 16W in TC mode.

 

[funkyrudi]

they should give you the right explanation - to err is human

Hope they´ll ship you the right one soon. I love this wire

 

[druckle]

its very strange. what the hell is this stuff????

With an alloy where the Curie Temperature is sensitive to chemistry variations it's always going to be difficult to know what we are really getting for properties without precise chemistry analysis on each batch.

I think a pure elemental wire like titanium which is not very sensitive to chemistry variation is a lot more practical for wide vaping application.

I'm sure Ralph will get to the bottom of the issue but in the meantime I'll just be a watcher for NiFe

Duane