High-Purity Quartz Crucibles for Crystal Growth
FGQuartz manufactures ultra-high-purity quartz crucibles for semiconductor and solar silicon crystal growth. We supply both standard laboratory crucibles and large-format CZ/MCZ crucibles engineered for demanding high-temperature environments.
Our crucibles offer exceptional thermal stability, outstanding thermal shock resistance and a stable inner surface that minimizes contamination. From R&D labware to high-volume OEM supply, we deliver consistent purity and dimensional accuracy. Explore our full product portfolio or custom fabrication capabilities.
Quartz Crucibles Overview
FGQuartz produces a full range of high-purity quartz crucibles designed to contain high-temperature melts without introducing impurities. Whether you need a small laboratory crucible or a large-diameter crucible for silicon ingot pulling, we manufacture to exact specifications.
We supply:
• CZ / MCZ quartz crucibles for semiconductor and solar silicon pulling
• Clear quartz laboratory crucibles (flat or round bottom)
• High-capacity industrial calcination crucibles
• Custom shapes with lids, spouts and flanged edges
For matching high-temperature components, see our quartz process tubes, wafer boats and quartz rods.
Typical Specifications of Quartz Crucibles
Baseline specifications of FGQuartz high-purity crucibles. Capacities, wall thicknesses and profiles are fully customizable. Complete material data is available on our Technical Specifications page.
1. Dimensional & Capacity Range
| Parameter | Typical Range | Notes |
|---|---|---|
| Laboratory Capacity | 10 ml – 2000 ml | Clear fused silica, available with lids |
| Industrial / CZ Diameter | Up to 32″ (800 mm)+ | Opaque outer / clear inner layer |
| Wall Thickness | 1.5 mm – 15 mm+ | Customized for structural needs |
| Base Profiles | Flat, Round, Conical | Machined or flame-formed |
2. Material Purity
| Property | Typical Value |
|---|---|
| SiO₂ Purity | ≥ 99.99% |
| Alkali Metals (Li, Na, K) | Ultra-low |
| Hydroxyl (OH) Content | < 5–10 ppm (application dependent) |
| Inner Surface Quality | Bubble-free clear layer |
3. Thermal & Physical Performance
| Property | Typical Value |
|---|---|
| Continuous Operating Temp. | Up to 1200 °C |
| Devitrification Resistance | Excellent |
| Coefficient of Thermal Expansion | ≈ 5.5 × 10⁻⁷ /°C |
| Thermal Shock Resistance | Outstanding |
Quartz Crucible Types We Engineer
Primary crucible types manufactured by FGQuartz.
CZ / MCZ Silicon Pulling Crucibles
Designed for the Czochralski process in semiconductor and solar manufacturing.
• Opaque outer layer for thermal insulation
• Ultra-clear, bubble-free inner surface
• High resistance to sagging and devitrification
Key for monocrystalline silicon growth. See Solar PV Quartz and Semiconductor Quartz.
Laboratory & Analytical Crucibles
Clear fused silica crucibles for scientific and chemical analysis.
• Excellent chemical resistance
• Outstanding thermal shock performance
• Available with lids and pouring spouts
Ideal for ashing, calcination and trace analysis. Explore Laboratory Quartz.
Custom Machined Crucibles
Fully custom quartz vessels machined to your drawings.
• Custom flanges, necks and handles
• Precision flat bottoms
• Specialized wall profiles
Suitable for proprietary equipment. Learn more about custom fabrication.
Quartz Crucible Types We Engineer
Primary crucible types manufactured by FGQuartz.
CZ / MCZ Silicon Pulling Crucibles
Designed for the Czochralski process in semiconductor and solar manufacturing.
• Opaque outer layer for thermal insulation
• Ultra-clear, bubble-free inner surface
• High resistance to sagging and devitrification
Key for monocrystalline silicon growth. See Solar PV Quartz and Semiconductor Quartz.
Laboratory & Analytical Crucibles
Clear fused silica crucibles for scientific and chemical analysis.
• Excellent chemical resistance
• Outstanding thermal shock performance
• Available with lids and pouring spouts
Ideal for ashing, calcination and trace analysis. Explore Laboratory Quartz.
Custom Machined Crucibles
Fully custom quartz vessels machined to your drawings.
• Custom flanges, necks and handles
• Precision flat bottoms
• Specialized wall profiles
Suitable for proprietary equipment. Learn more about custom fabrication.