Crucible Products

Quartz Crucibles

Forged in a vessel of unique quality

In the manufacture of silicon wafers for semiconductor applications, polysilicon starting materials are placed in a fused quartz crucible, heated to high temperatures and pulled from the melt as a single crystal. Fused quartz is the oxide of the silicon molten in it, minimizing contamination concerns, and one of the few materials that can combine the high purity and high temperature properties required.

Key Features

  • Customizable by dimension, purity, bubble content and coating to meet specific customer needs
  • Regional sales offices worldwide ensure responsive and attentive local support
  • Available from 14 to 36 inches in diameter to accommodate a wide range of hot zone designs

Potential Applications

  • Semiconductor silicon ingot growth
  • Semiconductor equipment parts
  • Firing of various materials
  • Belljar

Momentive Technologies offers a variety of compositions, from natural to synthetic silica materials, and customizable properties such as bubble content to optimize optical transmission and inner surface glass quality. A wide variety of customizable designs and coatings are available to optimize cost of ownership.

Product Grades

Grades Description
530-595
Natural sand grade - MT Germany, MT China
541
Synthetic silica inner surface - MT Germany
T200-T230
Natural sand grade - MT Yamagata
T240
Synthetic silica inner surface - MT Yamagata

Schematic of Crucible

quartz crudibles

Standard Sizes

Size OD W1 W2 W3 R1 R2
14"
363 ± 3
8 ± 3
8 ± 3
8 ± 3
381
90
16"
404 ± 3
9 ± 3
9 ± 3
9 ± 3
406
90
18"
457 ± 3
10 ± 3
10 ± 3
10 ± 3
457
90
20"
507 ± 3
10 ± 3
10 ± 3
10 ± 3
507
100
22"
556 ± 3
10 ± 3
10 ± 3
10 ± 3
558
110
24"
607 ± 3
12 ± 3
15 ± 3
12 ± 3
610
120
28"
708 ± 4
13 ± 4
15 ± 4
13 ± 4
708
140
32"
809 ± 4
14 ± 5
23 ± 5
15 ± 5
810
160

The information provided in these charts is for informational purposes only. It is not a product or material recommendation and it is shared with you on the express condition that you will use your own expertise and professional judgment in applying any information to a specific use case or need. This is general information only, the validity of which may be affected by individual factors that are unknown to Momentive Technologies. It is the responsibility of those using this information to ensure appropriate interpretation and application is undertaken with regards to any specific situation.

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