rimbro
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rimbro mikekazimer's article
Oct 8, 2018 at 3:39
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
No SiC in this stuff it is small amounts of yttrium and aluminum.
rimbro mikekazimer's article
Oct 8, 2018 at 3:38
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
https://simson.net/ref/1993/cubefire.html
rimbro mikekazimer's article
Oct 8, 2018 at 3:35
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
@tessar: Welding Mag is not more difficult than aluminium and presents no greater risk. Cutting it can be risky. Tigwelding was invented for magnesium (not aluminum). Some welders get quite adept at welding mag. check these out.
https://drive.google.com/file/d/1ysJkJiVrmV74KHGBNogDRFDwCoigWLBT/view?usp=sharing
https://drive.google.com/file/d/11SwBK-AI2PowhNR3DYNHxdG5mjK52cJ3/view?usp=sharing
rimbro mikekazimer's article
Oct 8, 2018 at 3:29
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
None of this stuff is military grade.
rimbro mikekazimer's article
Oct 8, 2018 at 3:28
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
Magnesium oxide is soft and non adherent, and offers very little protection. Some magnesium alloys have endurance strengths higher than most aluminium (the exception being AL6069 which is the best). Most of these mag alloys do not respond to heat treatment like complex aluminium alloys (strength can increase 4-6x) with magnesium you might get a 10% bump at the expense of ductility.
rimbro mikekazimer's article
Oct 8, 2018 at 3:22
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
@taquitos: What brand was the frame, some 7075 frames existed, but none that were welded. Some may have been sold as 7075.
rimbro mikekazimer's article
Oct 8, 2018 at 3:20
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
@taquitos: ZE62 is weldable, equally as weldable as 7075, both need special care to manage the shrinkage and hot tears. Damping quite right this is small but noticeable difference but requires specific considerations in frame design.
rimbro mikekazimer's article
Oct 8, 2018 at 3:16
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
@ka-brap: I am unsure how they calculate 20x higher as most scientific papers do not have aluminum containing magnesium alloys as more than about 3-4 times higher damping. But this being said it is true magnesium is a superb material from a comfort standpoint.
rimbro mikekazimer's article
Oct 8, 2018 at 3:15
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
@taquitos: 6061-T6 offers 12% elongation, while the AE81 stated elongation is 15% so I can say this is not brittle if it is true. Additionally, many magnesium alloys have been thought to be brittle but this is far from the truth, most have higher ductility than most aluminum alloys. 7075-T6 is 11% so it is lower than 6061-T6 but far lower than claimed elongation of AE81.
rimbro mikekazimer's article
Oct 8, 2018 at 3:11
Oct 8, 2018
Allite's New Super Magnesium Alloy is Lighter Than Aluminum, Less Expensive Than Carbon - Interbike 2018
@BuddyBuddy: 6061-T6 has a TYS of 271Mpa so AE81 is 12% lower TYS. (ASM standards sheet) or Matweb will shine light on this. Sadly Pinkbike echo's what promotional guys say far too often. The biggest issue I find with this is that sticking to the truth these alloys are quite interesting for a variety of reasons, once you slip a lie or exaggeration in here or there truth dies and credibility with it.
I know these three alloy well, and they are well suited to the task provided the maker can process these materials with far higher controls than 6061.