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  1. #1
    Join Date
    13th October 2014
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    Epoxy Comparisons and Technical Data Sheets

    I get tired of reading posts about whose epoxy is better so I went out and gathered so common epoxy technical data sheets from our manufacturers and vendors, my opinion after comparing them is that none have a definitive edge over the others but each does have some characteristics that may make them better for a certain application. I am not sure why the US Composites have a range for PSI's but it may be due to different curing techniques. All epoxies I believe are considered to be "neat" as tested (only Aeropoxy gave test data with reinforcements like FG, CF, and Kevlar and that data is not listed on the table below). For the US Composites 150 the lower rated of the two hardeners was chosen, an inquiry is in the US Composites for clarification on which hardener is the correct one for the 3:1 ratio, the other could be the 1:1 ratio.

    Common Rocketry Epoxy Comparisons


    Epoxy Brand Tensile Str-psi Compression Str-psi Flexural Str-psi Elongation @Break % Maximum Operating Temp (F) Deflection Temp (F) Shore D Hardness
    Glenmarc G-5000
    Rocket Poxy
    7,600 14,800 ND 6.3 225 150 85
    US Composites 150 w/ 3:1 hardener 7-8000 ND 12-15,000 ND ND 145 Barcol Hardness 25-30
    US Composites 635 w/ 3:1 hardener 9-10,000 ND 14-16,000 ND ND 145 Barcol Hardness
    27-32
    Aeropoxy ES6029 A and B part 8000 11,500 ND 7% ND ND 85
    Aeropoxy PR2032 w/ PH3660 Hardener 9828 ND 16,827 1.9 ND ND 88
    West System 105 w/206 Hardener 7,300 11,500 11,800 ND ND 123 83
    J-B Weld Original Formula 3960 3960 3960 ND 500 ND 85


    ND = No Data


    Information taken directly from the Technical Data Sheets as provided by the manufacturers/vendors. This information is compiled in an effort to give as direct a comparison as possible for all the epoxies that we as rocketry hobbyists tend to use.

    635 thin Epoxy & all hardeners.pdf
    150 Thick Resin.pdf
    AEROPOXY ES6209 Bulletin.pdf
    AEROPOXY PR2032 Bulletin w-4 Hardeners 24Jun08.pdf
    JB-Weld-Technical-Datasheet.pdf
    RP_G5000_DATASHEET.pdf
    TDS 105_205.pdf
    TDS 105_206.pdf
    TDS 105_209.pdf

    The West Systems Epoxies are the TDS files, Glenmarc RocketPoxy is G5000, and the others are Aeropoxy and US Composites.

    Last edited by rharshberger; 14th February 2017 at 05:20 AM.
    Rich

    NAR# 99154

    L3-4x upscale Estes Cherokee-D- AT M1297W 5/28/2016 http://www.rocketryforum.com/showthr...r-rharshberger

    TriCities Rocketeers NAR section# 736 http://www.tricitiesrocketeers.org/

  2. #2
    Join Date
    30th January 2016
    Location
    US > OK > NE
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    3,108
    Hey, thanks for pulling this together!


  3. #3
    Join Date
    13th October 2014
    Location
    SouthEastern, WA
    Posts
    5,391
    The table does not appear correctly on my smartphone for some reason.
    Rich

    NAR# 99154

    L3-4x upscale Estes Cherokee-D- AT M1297W 5/28/2016 http://www.rocketryforum.com/showthr...r-rharshberger

    TriCities Rocketeers NAR section# 736 http://www.tricitiesrocketeers.org/

  4. #4
    Join Date
    23rd July 2011
    Location
    Butte, MT
    Posts
    1,861

    Epoxy Comparisons and Technical Data Sheets

    It doesn't appear right on my iPad either, but I'm not sure if it's Tapatalk or the iPad. In any case, thank you very much for assembling the data!!

    Edit: It's Tapatalk; looking at it in Webview the table looks great.
    Steve Shannon
    Last edited by Steve Shannon; 14th February 2017 at 05:10 AM.
    Steve Shannon
    L3CC, TAP, Director, Tripoli Rocketry Association

  5. #5
    Join Date
    13th October 2014
    Location
    SouthEastern, WA
    Posts
    5,391
    Some of the ND's may actually be on the data sheets just under another name, the terms used are not ones that I am familiar since material science is a class I never took.
    Rich

    NAR# 99154

    L3-4x upscale Estes Cherokee-D- AT M1297W 5/28/2016 http://www.rocketryforum.com/showthr...r-rharshberger

    TriCities Rocketeers NAR section# 736 http://www.tricitiesrocketeers.org/

  6. #6
    Join Date
    13th October 2014
    Location
    SouthEastern, WA
    Posts
    5,391
    Just got an email from US Composites, with the exception of the 1:1 hardener the 635 and 150 epoxies use the same hardeners (2:1, 3:1, 4:1). Only the 150 epoxy uses the 1:1 hardener.

    Rich

    NAR# 99154

    L3-4x upscale Estes Cherokee-D- AT M1297W 5/28/2016 http://www.rocketryforum.com/showthr...r-rharshberger

    TriCities Rocketeers NAR section# 736 http://www.tricitiesrocketeers.org/

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