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  1. #1
    Super Moderator AndyK's Avatar
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    Default Vaping with SS Stainless Steel Wire

    There's a talk going on at FT about the usage of Stainless Steel wires for vaping. Anyone has any information about vaping with SS wires? There are mainly 3 types of SS wires available (Source: WireAndStuff.co.uk)

    I'll just throw out some technical info about the 304, 316 (316L) and 317L wires for you all to compare and see if we can find out enough information on these wires ..

    [size=1.35em]304 SS Wire[/size]

    Technical Specification:

    Electrical resistivity ( µOhmcm ) 70-72

    Elongation at break ( % ) <60
    Hardness - Brinell 160-190
    Izod impact strength ( J m-1 ) 20-136
    Modulus of elasticity ( GPa ) 190-210
    Tensile strength ( MPa ) 460-1100

    Density ( g cm-3 ) 7.93
    Melting point ( C ) 1400-1455

    Coefficient of thermal expansion @20-100C ( x10-6 K-1 ) 18.0
    Thermal conductivity @23C ( W m-1 K-1 ) 16.3

    SS304 grade is commonly used in: food processing equipment, wine making, beer brewing, milk processing, kitchen benches, sinks, troughs, equipment and appliances, heat Exchangers, woven or welded screens for mining, quarrying & water filtration, threaded fasteners.


    [size=1.35em]316 SS Wire[/size]

    Technical Specification:

    Electrical resistivity ( µOhmcm ) 70-78
    Temperature coefficient ( K-1 ) -

    Elongation at break ( % ) <60
    Hardness - Brinell 160-190
    Izod impact strength ( J m-1 ) 20-136
    Modulus of elasticity ( GPa ) 190-210
    Tensile strength ( MPa ) 460-860

    Density ( g cm-3 ) 7.96
    Melting point ( C ) 1370-1400

    Coefficient of thermal expansion @20-100C ( x10-6 K-1 ) 16-18
    Specific heat @23C ( J K-1 kg-1 ) 502
    Thermal conductivity @23C ( W m-1 K-1 ) 16.3

    SS316 grade is commonly used in: food processing equipment, wine making, beer brewing, milk processing, kitchen benches, sinks, troughs, equipment and appliances, heat Exchangers, woven or welded screens for mining, quarrying & water filtration, threaded fasteners. (Same as SS 304)


    [size=1.35em]317L (TMC) SS Wire[/size]

    Technical Specification:

    Density - lb/in3 0.285
    Modulus of Elasticity - psi 29 x 106
    Coefficient of Thermal Expansion, - 68-212°F, /°F 8.9 x 10-6
    Thermal Conductivity - Btu/ft hr°F 8.7
    Heat Capacity - Btu/lb°F 0.12
    Electrical Resistivity - Ù-inch 33.5 x 10-6

    Chemical Contents:

    Carbon 0.030 max
    Manganese 2.00 max
    Phosphorus 0.045 max
    Sulfur 0.030 max
    Silicon 0.75 max
    Chromium 18.0-20.0
    Nickel 11.0-15.0
    Molybdenum 3.0-4.0
    Nitrogen* 0.10 max

    Ultimate Tensile Strength - ksi 99 80 min
    0.2% Offset Yield Strength - ksi 48 35 min
    Elongation in 2 inches - % 52 40 min
    Reduction in Area - % 61 —
    Hardness - Rockwell B 85 96 max

    About this wire:

    'TMC' wire is what we're going to refer to this grade as for the vaping industry. We have been asked to produce a safe version of a wire that is hugely popular for vaping.

    317L is the technical name for this wire. The chemical details are listed as below.

    We have had hundreds of requests for this wire over the last year or so, so we're very glad to be releasing it now. We began the original production of this wire in December 2014!!! This is not an easy wire to produce and it's very rare in the global technical wire market.
    These are soft wires. They are easy to handle and cut.

    All forms of stainless steel are long lasting in the correct conditions. This wire should last over 25 years given the correct environment and treatment.

    (Source: http://wireandstuff.co.uk/products/3...53.html#SID=73)

  2. #2
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    Default Re: Vaping with SS Stainless Steel Wire

    Interesting read there Andy bhai. SS somehow has a comforting connotation for me. I will for sure try it

  3. #3
    Super Moderator AndyK's Avatar
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    Default Re: Vaping with SS Stainless Steel Wire

    I already have a few spools coming in .. let's see how good is it

  4. #4
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    Default Re: Vaping with SS Stainless Steel Wire

    Great. I'd like some if you can spare

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    Default Re: Vaping with SS Stainless Steel Wire

    Spare for me too

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    Default Re: Vaping with SS Stainless Steel Wire

    Count one for me too Andy bhai, if u have leverage.

  8. #8
    Super Moderator AndyK's Avatar
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    Default Re: Vaping with SS Stainless Steel Wire

    The thing is, they have only 3 sizes of TMC (317L SS) wire that looked good to me ... 0.45 (25 AWG), 0.35 (27 AWG) and 0.25 (30 AWG) ... 317L is said to be ideal wires for vaping.

    Bought 5 spools of the 0.45 wire (10m each spool) but then they have only 25m spools for the 27 AWG wire, so bought only 2 of those. And, the 30 AWG is a freebie

    Will see which wires are good and will let you know. By the way, something interesting to share that should give you some idea about the resistance of SS Wires. I tried to search the resistance per meter of 0.45 (25 AWG) 317L TMC wire but was unable to find any information. I have contacted VAM and requested them to post the info. However, from Steam-Engine.org .............

    Kanthal 0.45 (25 AWG) Wire vs 317L TMC 0.45 (25 AWG) Wire:

    [img width=600 height=211]http://www.indianvapers.com/images/kanthal-25awg-resisitance.jpg[/img]

    [img width=600 height=206]http://www.indianvapers.com/images/317L-TMC-25awg-resistance.jpg[/img]

    You need double the wraps with SS wire than what you need with the Kanthal wire to attain the sort of resistance you wish.

    Kanthal 0.45 (25 AWG) resistance per meter is 8.93 ohm (as per VAM website). Which means, the 317L TMC 0.45 (25 AWG) wire has half the resistance approximately, the resistance per meter should be around 4 ohm. That's why we need more wraps to attain that particular resistance.

    So, I guess, buying thicker 317L wire is NOT advisable, anything thicker than 25 AWG would be too low on resistance and will require a crap load of wraps to attain the required resistance. Just from the numbers shown at Steam-Engine.org, I feel that 27 AWG will be pretty good in case of TMC wire (317L) for single coil builds and 25 AWG will be pretty good for dual coil builds.


    Damn, I'm happy with my purchase

  9. #9
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    Default Re: Vaping with SS Stainless Steel Wire

    Andy bhai book mine for 25AWG, I normally do 0.2 ~ 0.4 ohms, think this is better. Thanks

  10. #10
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    Default Re: Vaping with SS Stainless Steel Wire

    27 awg for me bhai

  11. #11
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    Default Re: Vaping with SS Stainless Steel Wire

    What about me

  12. #12
    Super Moderator AndyK's Avatar
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    Default Re: Vaping with SS Stainless Steel Wire

    I'm looking for blank wire bobbins .. any suggestions? Will have the 27 AWG break up into spools of 10m to accommodate everyone's need hahaha. Can't seem to find any blank bobbins :/

  13. #13
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    Default Re: Vaping with SS Stainless Steel Wire

    SS wires now available on FT.

  14. #14
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    Default Re: Vaping with SS Stainless Steel Wire

    thanks Sunny

  15. #15
    Super Moderator AndyK's Avatar
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    Default Re: Vaping with SS Stainless Steel Wire

    Hadd hai .. jab meri ship ho gayi to FT ko bhi SS wire yaad aa gayi :/

    lol but happy that it is on FT now

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