# FiReal Question

**URL:** <https://forums.yoyoexpert.com/t/fireal-question/73768>\
**Category:** General Yo-Yo\
**Created:** [March 31, 2015, 11:19am UTC](https://forums.yoyoexpert.com/t/fireal-question/73768 "2015-03-31T11:19:55Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![anon5341354](https://avatars.discourse-cdn.com/v4/letter/a/3ab097/32.png) [@anon5341354](https://forums.yoyoexpert.com/u/anon5341354)\
**Post date:** [March 31, 2015, 11:19am UTC](https://forums.yoyoexpert.com/t/fireal-question/73768/1 "2015-03-31T11:19:55Z")

</div>

What grade of aluminum is it? I read somewhere that it is ‘A300 of the A300 family’ but what exactly does that mean?

---

<div class="post-metadata">

**Author:** ![kadabrium](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/kadabrium/32/1522_2.png) [@kadabrium](https://forums.yoyoexpert.com/u/kadabrium)\
**Post date:** [March 31, 2015, 1:28pm UTC](https://forums.yoyoexpert.com/t/fireal-question/73768/2 "2015-03-31T13:28:52Z")

</div>

the one that makes the most sense would be アルクイン300

> **[p113\_05.pdf](https://sun-al.co.jp/docs/p113_05.pdf)**
>
> 363.29 KB

> **[製品紹介 - 金型用アルミニウム合金「アルクイン® 300」 ： グローバル アルミニウム メジャーグループ　株式会社UACJ](https://www.uacj.co.jp/review/furukawasky/009/abst09.htm)**
>
> 旧古河スカイの技術・研究論文誌を掲載しています。

appears to be just 7075 with more Ti and Zr