Hardened Ni200

[chia]

Hi guys.. The Mesh Company recently launched the 'hardened' Ni200 wires. I just got a roll and it is significantly easier to coil than the regular Ni200.
But I did notice for the same number of coils the resistance is slightly lower..

Not affiliated to the company in any way, just thought I share some new info..

 

[SontavaMe]

Lower resistance or higher? 'Hardened' supposes it's alloyed with a harder metal and therefore would make it not Nichrome200 but, something else. I've been using Nichrome 80 which is harder but, doesn't work for temperature sensing since it's Ohms rating is not low enough.

I visited 'The vape Mesh Company' online. Is this your place? They have a 'hard drawn' versus a 'soft' finish. The hard drawn does look harder ... and they offer tech specs on their process. Wow! You've found something here. I'm going in for a closer look-see.

Thank you Chia.

 

[chia]

Nah not my place.. Got my kanthal wires from them a couple of times.. Lots cheaper and more choices too.. They have twisted wires too !

Anyway I did my 'soft' Ni200 about 3/4 wraps id 2.5 and the resistance reads 0.1 or something close.. Now with the 'hardened' I get 0.07.. Same set up.

 

[TheotherSteveS]

i already posted all this in another thread. Anyway, the hardened wire from VMC is hard drawn as stated and it is bloody springy!

 

[TheotherSteveS]

Nah not my place.. Got my kanthal wires from them a couple of times.. Lots cheaper and more choices too.. They have twisted wires too !

Anyway I did my 'soft' Ni200 about 3/4 wraps id 2.5 and the resistance reads 0.1 or something close.. Now with the 'hardened' I get 0.07.. Same set up.

are you sure you aren't losing a turn as it springs out off the drill bit or whatever. I have had the opposite experience in that the coil diameter ends up being larger than the mandrel upon which I a wrapping it due to this springiness....

 

[TheotherSteveS]

Its not an alloy as far as I know....

 

[tchavei]

Ni = nickel (99.6% pure) not nichrome.

Hardening is a process not adding other material or it wouldn't be ni 200 anymore.

Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[TheotherSteveS]

I think it is basically stretching/bending it repeatedly!

 

[tchavei]

I think it is basically stretching/bending it repeatedly!

That's cold hardening I think. There are other methods. I have no idea what they use for nickel.

Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[Sptz]

Not sure if it's the same but these ones:
TEMPERED Nickel ni200 DNA40 Wire

Are the ones I use and it feels like kanthal, I literally make a perfect coil everytime and works perfectly.

 

[TheotherSteveS]

That's cold hardening I think. There are other methods. I have no idea what they use for nickel.

Regards
Tony

Sent from my keyboard through my phone or something like that.

same thing!!
Work hardening - Wikipedia, the free encyclopedia

its wiki therefore it must be true lol!!

 

[TheotherSteveS]

ive found the 30g to be much easier to work than the 32 for some reason...32 is really spring-like..

 

[tchavei]

ive found the 30g to be much easier to work than the 32 for some reason...32 is really spring-like..

And I found 30g to be more user friendly than 28g

Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[TheotherSteveS]

And I found 30g to be more user friendly than 28g

Regards
Tony

Sent from my keyboard through my phone or something like that.

havent rried 28 but I like my 'normal' 28 just fine so 30g it is!! We concur yet again!

 

[tchavei]

Seems so

Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[Kaana]

does it have any advantage over standard nickel in terms of connectivity or overall TC ?

 

[tchavei]

Not sure because I don't have normal nickel anymore but my builds always read lower than what steam engine predicts... Always.

A 10 wrap of tempered 30g ni 200 on a 2.4mm mandrel (spaced) gives me 0.14 on my dna 40 while steam engine predicts 0.17-0.18


Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[TheotherSteveS]

Not sure because I don't have normal nickel anymore but my builds always read lower than what steam engine predicts... Always.

A 10 wrap of tempered 30g ni 200 on a 2.4mm mandrel (spaced) gives me 0.14 on my dna 40 while steam engine predicts 0.17-0.18


Regards
Tony

Sent from my keyboard through my phone or something like that.

I'll check for this with my hardened wire. Might be that the stated guage is wrong for some reason. Cant be because its stretched (and thus smaller diameter) since that would have the opposite effect! Its weird. Stay tuned. Im going to sleep now..lol!

 

[tchavei]

I'll check for this with my hardened wire. Might be that the stated guage is wrong for some reason. Cant be because its stretched (and thus smaller diameter) since that would have the opposite effect! Its weird. Stay tuned. Im going to sleep now..lol!

Thx.

I don't think it's the wire diameter. It's definitely 28g and 30g but if you could check your resistance I would appreciate it.

I'm pretty sure it's the wire and not the board because the error multiplies as I go bigger and bigger. If it were the board the error should be sort of static I think.

I also don't believe it's a connection issue because that would drive the resistance up and never down.



Regards
Tony

Sent from my keyboard through my phone or something like that.

 

[drmarble]

tchavel:
You could just check the resistance of a length of your wire. Take a meter of the 30 gauge and it should have 1.89 ohms resistance. the 28 gauge should be 1.19 ohms. You don't have to make a coil; you don't even have to cut the wire. Just connect 1 measured meter across your volt/ohmmeter. Or, you could connect each end to the posts on an atomizer and use an atomizer ohm meter. Measuring that great a length reduces measurement errors.
I got these values from steam engine using the advanced settings. You could use other sources such as this one: http://resistancewire.com/uploads/page/ADT2001_12_17_NI200_MET.pdf
to check the resistance of your wire.
If your resistance is off, then something is wrong with the wire alloy or the diameter.