# What IS HG material? **URL:** \ **Category:** General Yo-Yo\ **Created:** [July 27, 2009, 5:25pm UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706 "2009-07-27T17:25:09Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Ikelace](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/ikelace/32/248_2.png) [@Ikelace](https://forums.yoyoexpert.com/u/Ikelace)\ **Post date:** [July 27, 2009, 5:25pm UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/1 "2009-07-27T17:25:09Z")
well, i know what it “is”, but what is it made out of? that thread about the kos got me thinking about that. I know that its a mesh of different materials… given the fact that it costs too much to make now a days, im guessing one of the main materials used in it was copper, because of the sudden and recent raise in price of copper. so besides that, what else is in it? ---
**Author:** ![Paolo](https://avatars.discourse-cdn.com/v4/letter/p/6f9a4e/32.png) [@Paolo](https://forums.yoyoexpert.com/u/Paolo)\ **Post date:** [July 27, 2009, 5:29pm UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/2 "2009-07-27T17:29:56Z")
I’m not sure what’s in it. I couldn’t find much on Google, but I’ll keep trying. Here is what YoYoWiki says though: Heavy GravityHeavy Gravity is a plastic used by YoYoJam. It allows for rim weighting, but at a cheaper price than metal rim weighting. The Heavy Gravity material is much denser than the regular celcon plastic. ---
**Author:** ![Azor](https://avatars.discourse-cdn.com/v4/letter/a/4af34b/32.png) [@Azor](https://forums.yoyoexpert.com/u/Azor)\ **Post date:** [July 27, 2009, 11:56pm UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/3 "2009-07-27T23:56:08Z")
some HD plastics we use at work , besides delrin, have aluminum particles in it , other yeah copper or even iron fillings . anybody have one put a magnet to it . ---
**Author:** ![Paolo](https://avatars.discourse-cdn.com/v4/letter/p/6f9a4e/32.png) [@Paolo](https://forums.yoyoexpert.com/u/Paolo)\ **Post date:** [July 27, 2009, 11:58pm UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/4 "2009-07-27T23:58:18Z")
> [@Azor](#): > > some HD plastics we use at work , besides delrin, have aluminum particles in it , other yeah copper or even iron fillings . > > anybody have one put a magnet to it . Wow! It sticks! 😃 ---
**Author:** ![theyoyoempire](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/theyoyoempire/32/254_2.png) [@theyoyoempire](https://forums.yoyoexpert.com/u/theyoyoempire)\ **Post date:** [July 27, 2009, 11:58pm UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/5 "2009-07-27T23:58:48Z")
Here is a list of YoYoJam HG yoyos: Black Gold Copperhead Copperhead Heavyweight K-OS K-OS Extreme Matador SpinFaktor HG Triple Jam Relic HG means heavy gravity. Usually on the rims to keep it spinning. It was a alternative of metal weight rings. Back then, they didn’t use metal rings much, so they used HG. Now, HG is out of production, and YoYoJam uses metal. I think YoYoJam should make a K-OS and a K-OS Extreme, but instead of HG, use metal or plastic. ---
**Author:** ![Paolo](https://avatars.discourse-cdn.com/v4/letter/p/6f9a4e/32.png) [@Paolo](https://forums.yoyoexpert.com/u/Paolo)\ **Post date:** [July 28, 2009, 12:00am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/6 "2009-07-28T00:00:26Z")
> [@theyoyoempire](#): > > Here is a list of YoYoJam HG yoyos: > > Black Gold > Copperhead > Copperhead Heavyweight > K-OS > K-OS Extreme > Matador > SpinFaktor HG > Triple Jam > > HG means heavy gravity. Usually on the rims to keep it spinning. It was a alternative of metal > weight rings. Back then, they didn’t use metal rings much, so they used HG. Now, HG is out of production, and YoYoJam uses metal. > > I think YoYoJam should make a K-OS and a K-OS Extreme, but instead of HG, use metal or plastic. There was also the Relic. ---
**Author:** ![Apetrunk](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/apetrunk/32/148_2.png) [@Apetrunk](https://forums.yoyoexpert.com/u/Apetrunk)\ **Post date:** [July 28, 2009, 12:00am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/7 "2009-07-28T00:00:59Z")
I heard that the HG material was carbon fiber. ---
**Author:** ![theyoyoempire](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/theyoyoempire/32/254_2.png) [@theyoyoempire](https://forums.yoyoexpert.com/u/theyoyoempire)\ **Post date:** [July 28, 2009, 12:03am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/8 "2009-07-28T00:03:14Z")
> [@gm user](#): > > > [@theyoyoempire](#): > > > > Here is a list of YoYoJam HG yoyos: > > > > Black Gold > > Copperhead > > Copperhead Heavyweight > > K-OS > > K-OS Extreme > > Matador > > SpinFaktor HG > > Triple Jam > > > > HG means heavy gravity. Usually on the rims to keep it spinning. It was a alternative of metal > > weight rings. Back then, they didn’t use metal rings much, so they used HG. Now, HG is out of production, and YoYoJam uses metal. > > > > I think YoYoJam should make a K-OS and a K-OS Extreme, but instead of HG, use metal or plastic. > > There was also the Relic. Yes! Thank you GM User. Edited. ---
**Author:** ![j4dude](https://avatars.discourse-cdn.com/v4/letter/j/e8c25b/32.png) [@j4dude](https://forums.yoyoexpert.com/u/j4dude)\ **Post date:** [July 28, 2009, 12:30am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/9 "2009-07-28T00:30:21Z")
i heard they are making a metal kos ---
**Author:** ![theyoyoempire](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/theyoyoempire/32/254_2.png) [@theyoyoempire](https://forums.yoyoexpert.com/u/theyoyoempire)\ **Post date:** [July 28, 2009, 12:35am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/10 "2009-07-28T00:35:45Z")
Sweet. Keep your eyes peeled! ---
**Author:** ![JM1](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jm1/32/135_2.png) [@JM1](https://forums.yoyoexpert.com/u/JM1)\ **Post date:** [July 28, 2009, 12:41am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/11 "2009-07-28T00:41:53Z")
> [@Azor](#): > > some HD plastics we use at work , besides delrin, have aluminum particles in it , other yeah copper or even iron fillings . > > anybody have one put a magnet to it . I am pretty sure that it is just dense plastic. The magnet trick wont work if it’s aluminum or copper, but I still doubt it has any metal in it. ☹ > [@Apetrunk](#): > > I heard that the HG material was carbon fiber. Carbon-fiber is lighter than delrin, so I doubt that. ---
**Author:** ![Paolo](https://avatars.discourse-cdn.com/v4/letter/p/6f9a4e/32.png) [@Paolo](https://forums.yoyoexpert.com/u/Paolo)\ **Post date:** [July 28, 2009, 12:44am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/12 "2009-07-28T00:44:14Z")
> [@JM1](#): > > > [@Azor](#): > > > > some HD plastics we use at work , besides delrin, have aluminum particles in it , other yeah copper or even iron fillings . > > > > anybody have one put a magnet to it . > > I am pretty sure that it is just dense plastic. The magnet trick wont work if it’s aluminum or copper, but I still doubt it has any metal in it. ☹ > > > [@Apetrunk](#): > > > > I heard that the HG material was carbon fiber. > > Carbon-fiber is lighter than delrin, so I doubt that. Nope, the magnets stick. I’ll make a video for proof! ;D ---
**Author:** ![JM1](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jm1/32/135_2.png) [@JM1](https://forums.yoyoexpert.com/u/JM1)\ **Post date:** [July 28, 2009, 12:50am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/13 "2009-07-28T00:50:42Z")
Then it has at least some iron. Copper and aluminum aren’t magnetic. They do conduct a magnetic field, but try using a magnet on copper wire or a soda can. It wont work. ---
**Author:** ![Paolo](https://avatars.discourse-cdn.com/v4/letter/p/6f9a4e/32.png) [@Paolo](https://forums.yoyoexpert.com/u/Paolo)\ **Post date:** [July 28, 2009, 12:52am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/14 "2009-07-28T00:52:27Z")
> [@JM1](#): > > Then it has at least some iron. Copper and aluminum aren’t magnetic. They do conduct a magnetic field, but try using a magnet on copper wire or a soda can. It wont work. Yeah, I think it does have some iron, but fels A LOT like plastic. Video coming in a few minutes. ---
**Author:** ![JM1](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jm1/32/135_2.png) [@JM1](https://forums.yoyoexpert.com/u/JM1)\ **Post date:** [July 28, 2009, 12:53am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/15 "2009-07-28T00:53:46Z")
I emailed YYJ. ---
**Author:** ![Ikelace](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/ikelace/32/248_2.png) [@Ikelace](https://forums.yoyoexpert.com/u/Ikelace)\ **Post date:** [July 28, 2009, 1:02am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/16 "2009-07-28T01:02:54Z")
> [@theyoyoempire](#): > > > [@gm user](#): > > > > > [@theyoyoempire](#): > > > > > > Here is a list of YoYoJam HG yoyos: > > > > > > Black Gold > > > Copperhead > > > Copperhead Heavyweight > > > K-OS > > > K-OS Extreme > > > Matador > > > SpinFaktor HG > > > Triple Jam > > > > > > HG means heavy gravity. Usually on the rims to keep it spinning. It was a alternative of metal > > > weight rings. Back then, they didn’t use metal rings much, so they used HG. Now, HG is out of production, and YoYoJam uses metal. > > > > > > I think YoYoJam should make a K-OS and a K-OS Extreme, but instead of HG, use metal or plastic. > > > > There was also the Relic. > > Yes! Thank you GM User. Edited. haha, im not asking about what hq is used for or what yoyos use it. > [@Apetrunk](#): > > I heard that the HG material was carbon fiber. carbon fiber is actually EXTREMELY light. so i doubt they would use it to weight rims. ---
**Author:** ![Paolo](https://avatars.discourse-cdn.com/v4/letter/p/6f9a4e/32.png) [@Paolo](https://forums.yoyoexpert.com/u/Paolo)\ **Post date:** [July 28, 2009, 1:20am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/17 "2009-07-28T01:20:06Z")
> [@Ikelace](#): > > > [@theyoyoempire](#): > > > > > [@gm user](#): > > > > > > > [@theyoyoempire](#): > > > > > > > > Here is a list of YoYoJam HG yoyos: > > > > > > > > Black Gold > > > > Copperhead > > > > Copperhead Heavyweight > > > > K-OS > > > > K-OS Extreme > > > > Matador > > > > SpinFaktor HG > > > > Triple Jam > > > > > > > > HG means heavy gravity. Usually on the rims to keep it spinning. It was a alternative of metal > > > > weight rings. Back then, they didn’t use metal rings much, so they used HG. Now, HG is out of production, and YoYoJam uses metal. > > > > > > > > I think YoYoJam should make a K-OS and a K-OS Extreme, but instead of HG, use metal or plastic. > > > > > > There was also the Relic. > > > > Yes! Thank you GM User. Edited. > > haha, im not asking about what hq is used for or what yoyos use it. > > > [@Apetrunk](#): > > > > I heard that the HG material was carbon fiber. > > carbon fiber is actually EXTREMELY light. so i doubt they would use it to weight rims. Sorry, lol. But I can tell you there is Iron, Cobalt or Nickel in it. [![]( " - YouTube") ](https://www.youtube.com/watch?v=fwGn6xoNPf8) ---
**Author:** ![Ewski](https://avatars.discourse-cdn.com/v4/letter/e/848f3c/32.png) [@Ewski](https://forums.yoyoexpert.com/u/Ewski)\ **Post date:** [July 28, 2009, 2:03am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/18 "2009-07-28T02:03:20Z")
I will have to try out that magnet thing with my k-os extreme. I do know that when I smell my k-os extreme, I can definitely tell that there is some kind of copper or iron or something like that in there. ---
**Author:** ![rsmod123](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/rsmod123/32/46_2.png) [@rsmod123](https://forums.yoyoexpert.com/u/rsmod123)\ **Post date:** [July 28, 2009, 8:35am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/19 "2009-07-28T08:35:18Z")
Nickel and bronze. [http://yoyonation.com/product.php?productid=16186&cat=0&page=1](http://yoyonation.com/product.php?productid=16186&cat=0&page=1) > [@](#): > > It has most of its weight concentrated on the outside rim (using nickel/broze weight rings) which results in significantly longer spin times for you. ---
**Author:** ![Pheenix](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/pheenix/32/65_2.png) [@Pheenix](https://forums.yoyoexpert.com/u/Pheenix)\ **Post date:** [July 28, 2009, 9:00am UTC](https://forums.yoyoexpert.com/t/what-is-hg-material/4706/20 "2009-07-28T09:00:19Z")
> [@rsmod123](#): > > Nickel and bronze. > > [http://yoyonation.com/product.php?productid=16186&cat=0&page=1](http://yoyonation.com/product.php?productid=16186&cat=0&page=1) > > > [@](#): > > > > It has most of its weight concentrated on the outside rim (using nickel/broze weight rings) which results in significantly longer spin times for you. The Super SpinFaKtor isn’t in the HG line though. Carbon fiber is way too light. It says everywhere that it is really dense plastic, but as it is magnetic, there should be some form of metal in there. [Next page](https://forums.yoyoexpert.com/t/what-is-hg-material/4706.md?page=2)