Product Specification

Single Crystal Sapphire Ingot Al₂O₃ KY CZ 80kg 200kg 400kg for Industrial & Optical Applications

Product Overview

ZMSH offers high-purity single crystal sapphire ingots, meticulously manufactured using advanced Kyropoulos (KY) and Czochralski (CZ) growth techniques. These ingots are made from ultra-pure aluminum oxide (Al₂O₃) crystals and feature a hexagonal crystal structure with excellent uniformity and minimal impurities. Their superior mechanical, optical, and thermal properties make them ideal for a wide range of industrial, scientific, and optoelectronic applications.

Our sapphire ingots are available in 80kg, 200kg, and 400kg sizes, providing versatile options for different manufacturing requirements. They are widely used as substrates for LED devices, laser diodes, and infrared detectors, as well as in the production of high-precision optical components, mechanical parts, and biomedical devices.

The unique properties of sapphire, including Mohs hardness of 9, excellent thermal conductivity, broad optical transparency from UV to IR, high chemical resistance, and electrical insulation, make it a reliable and durable material in demanding environments. Sapphire ingots are also biocompatible, enabling their safe use in medical implants and surgical instruments.

In addition to standard specifications, ZMSH provides customized solutions tailored to specific crystal orientations (A, C, and R) and dimensions, ensuring optimal performance for your specialized applications. With strict quality control at every stage—from raw material selection, crystal growth, annealing, cutting, and polishing to final inspection—our sapphire ingots meet the highest industry standards for consistency, purity, and performance.

By choosing ZMSH sapphire ingots, manufacturers can benefit from reliable material quality, precise crystal orientation, and comprehensive technical support, making them a trusted solution for optoelectronics, microelectronics, aerospace, industrial, and medical applications.

Product Manufacturing Process

Sapphire Ingot Key Features

• High Purity & Uniformity: Minimal impurities ensure stable performance.

• Crystal Structure: Hexagonal lattice, with A, C, and R orientations.

• Hardness: Mohs 9, extremely resistant to scratches and abrasion.

• Optical Transparency: Broad UV to IR range (0.17–5.5 μm).

• Thermal Stability: High melting point (~2303 K) and excellent thermal conductivity.

• Electrical Insulation: High resistivity and low dielectric loss.

• Chemical Resistance: Inert to acids, alkalis, and most corrosive environments.

• Mechanical Strength: Suitable for precision machining and complex components.

• Biocompatibility: Safe for medical implants and instruments.

Sapphire Ingot Growth Methods

• Kyropoulos (KY): Large high-quality ingots, low impurities.

• Czochralski (CZ): Versatile method, widely used for smaller ingots.

• Other Methods: HEM, EFG, Verneuil, HDS (available on request).

Sapphire Ingot Applications

• Optoelectronics: LED substrates, laser diodes, infrared detectors.

• Microelectronics: High-speed ICs, MEMS devices, sensors.

• Industrial: Bearings, cutting tools, high-pressure windows.

• Medical Devices: Surgical instruments, endoscopes, implants.

• Aerospace & Defense: Aircraft windows, missile domes, infrared sensors.

• Luxury & Watches: Scratch-resistant watch crystals and jewelry.

Sapphire Ingot Production Process

1. Raw Material Selection: Ultra-pure Al₂O₃ crystals.

2. Crystal Growth: KY/CZ method under controlled conditions.

3. Annealing: Relieve internal stress and enhance properties.

4. Cutting & Polishing: Diamond saws and precision polishing.

5. Quality Control: Optical inspection, X-ray diffraction, chemical analysis.

6. Packaging & Shipment: Safe packaging for industrial delivery.

Why Choose ZMSH Sapphire Ingot

• High purity and precise crystal orientation.

• Excellent optical, thermal, and mechanical properties.

• Available in multiple weights (80–400kg) and sizes.

• Custom solutions and technical support for industrial integration.

• Trusted supplier with decades of experience in sapphire production.

Sapphire Ingot FAQ 

1. What is a single crystal sapphire ingot and how is it made?
A single crystal sapphire ingot is a high-purity Al₂O₃ crystal with a hexagonal structure. It is grown using advanced methods like Kyropoulos (KY) or Czochralski (CZ), producing large, high-quality crystals for industrial, optical, and electronic applications.

2. What are the key properties of sapphire ingots?

• Hardness: Mohs 9, highly scratch-resistant

• Optical Transparency: UV to IR range (0.17–5.5 μm)

• Thermal Stability: High melting point (~2303 K) and excellent heat conductivity

• Chemical & Electrical Resistance: Inert, biocompatible, and high electrical insulation

3. What are the main applications of sapphire ingots?
Used widely in optoelectronics (LEDs, laser diodes), microelectronics (ICs, MEMS), industrial components, medical devices, aerospace, and luxury watches, due to their mechanical, thermal, and optical performance.

4. What sizes and orientations are available?
Available in 80kg, 200kg, and 400kg. Crystal orientations include A, C, and R, chosen based on application requirements. Custom sizes and technical guidance are provided.