The answer is Alumina Rigidizer Type AL-R/H. Alumina Textile Type AS-7M is an incredible material. It retains 100% of its tensile strength when exposed to temperatures as high as 1200C. Type 0909-P is commonly used as a reinforcement in advanced refractory structures including CMCs. Because AS-7M is manufactured with only a minute amount of organic sizing added in the yarn [...]