OVERVIEW of Magmatech XL-911A |
Machinable Magmatech XL-911A is a natural ceramic material. In chemical terms it is a hydrous alumina silicate. We supply this material in standard rods, blocks, and plates as well as special shapes.
Applications Include: prototype hardware, insulators, bushings, soldering fixtures, nozzles, welding tips or whatever you need.
Machining
Unfired Magmatech XL-911A is a free machining material that can be shaped using most machine tools. The material is non-toxic but as with any airborn dust it could a be respiratory irritant if directly inhaled. Common sense and dust collection systems are recommended.
Firing:
The following procedure should be followed carefully to avoid cracking:
Machined parts should be placed in a cool furnace and protected from direct heat radiation. The use of refractory furniture, boxes,or baffles is recommended. A heating rate of 200 - 250º F per hour is typical. The rate of heating should not exceed 300º F per hour. Parts with cross sections exceeding 1/2" are more critical and cracking may occur during the firing cycle. If a cross section of 1/2" or greater is unavoidable, a heating rate of approximately 50º - 150º F per hour and strategically placed stress relief holes may help minimize cracking.
The maturing temperature of Magmatech XL-911A is between 1850º and 2000º F. The temperature should be maintained for approximately 30 minutes up to 1/4" cross section and 45 minutes for 1/2" and greater cross sections. Fired pieces may be removed from the furnace after cooling below 200º F.
During the firing process, Magmatech XL-911A expands approximately 2%. A temperature of 2000º F should not be exceeded. If 2000º F is exceeded, crystallization, distortion, shrinkage and a loss of stated material properties will occur.
As with most natural materials, texture, color, hardness, machinability, final expansion, and ideal firing temperatures may vary.
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FEATURES AND BENEFITS of Magmatech XL-911A |
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Magmatech XL-911 Features:
Magmatech XL-911A is machinable in an unfired state and used in applications up to 1000 F
After firing, parts are as hard as carbide & usable up to 2100 F
Magmatech XL-911A has low thermal expansion
Magmatech XL-911 is a low-cost, high-performance product
Magmatech XL-911A is available in wide range of stock up to 12" in diameter.
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![Magmatech Xl-911a]( "Magmatech Xl-911a")
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