i'll buy a set and see if it melts down and prints that'll tell if it's abs or not since it melts at 400*f without additives.
the browns ones are a Organic pad and if these are ABS this would also fall under organic pads
abs is quite a strong material if done correctly i use it often along with PETG and PLA+
edit: if you have a extra pad drop it in a cup of gas for 24 hours that will tell you if it is ABS, ABS is not gas friendly
Additives in ABS for use in 3D printing (generally to improve flow characteristics by lowering the glass transition temp (about 220degF), which is much lower than the melting point and would be reached in a friction drive application like this in no time) are different than those used in injection molding processes, which is how actual parts (not trinkets) are made, where they may be for impact resistance, rigidity, UV resistance, etc. Its actually an amorphous material and has no true melting point. It has a transition zone from solid to liquid thats quite wide and starts to get soft at very low temps relatively.
The stuff used in your 3D printer is not the same as what's typically found in manufactured products. Its generally a higher styrene content, hence why 3D printed ABS objects are rather weak in comparison regardless of layer adhesion properties. Even if its fully bonded and annealed. So don't get confused about your 3D printing material being anything like typical manufacturing industry plastics, as they are not.
True, ABS can be quite strong if done correctly, but it isnt a fantastic friction material. We aren't talking about "strength" here. We are talking about heat tolerance, and abrasion resistance which "friction" tends to induce.
A more appropriate chemical test would be acetone, which would show indication of dissolving immediately. No need to wait for gasoline to do its job, which is rather slow at dissolving ABS unless it has more styrene than typical, and these certainly would not even if they were ABS. At least I would hope not and they certainly don't seem to.
I suppose there could be some obscure ABS/solids composite that is used as a friction material, but I doubt it would be for an application thats subject to the type of conditions a clutch would put it through.
I am a manufacturing engineer of almost 30 years... I tend to know what materials are capable of.
Drop them in your clutch basket and give them a shot. It hardly matters what they are actually made of if they are doing their job as expected.
One thing thats immediately apparent is there is no wear in period with these as there is with the red, or the black/white ones where it gets better over a bit of riding as they bed in (if they ever really do at all). They are good right away with no perceivable change after riding a bit.
