​​Sapphire Blank 118mm×74mm×8mm High Hardness for Infrared Windows​​

Sapphire blanks/substrates refer to square or circular plate-like materials obtained by orienting, cutting, and rough grinding large-sized sapphire boules. They have not yet undergone final precision polishing (CMP) or patterning processes and serve as intermediate semi-finished products for manufacturing various sapphire end products, such as wafers, optical windows, and cover plates. The core material is α-aluminum oxide (α-Al₂O₃) single crystal with a regular lattice structure.

ZMSH Services Introduction: We specialize in the research, development, and manufacturing of high-performance crystal materials. In addition to providing sapphire blanks/substrates in various specifications, our company possesses strong precision machining capabilities to produce sapphire wafers (for LEDs and Micro-LEDs), sapphire optical windows/domes (for photoelectric equipment and military applications), sapphire rods/tubes (for semiconductor equipment chamber liners), and custom-shaped sapphire components according to customer drawings. We are committed to offering a one-stop solution from crystal growth to precision processing.

Sapphire Blank Characteristics

1. Extreme Hardness and Wear Resistance: Sapphire blank mohs hardness of up to 9, second only to diamond, making it highly scratch-resistant and extremely durable.
2. Excellent Optical Performance: Sapphire blank high transmittance across ultraviolet to infrared wavelengths (0.15–5.5 μm), making it an ideal material for optical windows.
3. Outstanding Physical and Chemical Stability: Sapphire blank high-temperature resistance (melting point of 2053°C), thermal shock resistance, and strong chemical inertness. Insoluble in strong acids and alkalis except hydrofluoric acid and hot phosphoric acid.
4. Good Electrical Insulation and Dielectric Properties: An excellent insulator with stable dielectric constants.
5. High Purity and Low Defect Density: Sapphire blank as a single-crystal material, it has minimal internal defects and extremely high purity, ensuring no contamination in process environments.

Sapphire Blank Main Application Fields

① Semiconductor Lighting (LEDs): The mainstream substrate material for GaN-based LED epitaxial growth. Over 90% of global LED chips use sapphire substrates.

②Consumer Electronics: Used as camera lens covers for smartphones, fingerprint sensor covers, and screen covers for high-end wearables like the Apple Watch, leveraging its scratch-resistant properties.

③Optics and Military Applications: Employed in missile radomes, infrared windows, electro-optical pods, and laser windows, where it must withstand extreme conditions such as high speed, high temperature, and rain erosion.

④Industrial and Scientific Research: Used as observation windows for semiconductor equipment, barcode scanner windows, high-temperature viewports, and substrates for scientific instruments.

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1. Unpolished Sapphire Tubes​ KY Method Rough Blanks Custom Sizes

1. Q: What is a sapphire substrate used for?
     A: It is primarily used as the foundational material for growing GaN-based LED chips and as protective covers in high-end consumer electronics.

2. Q: Why is sapphire used in LED manufacturing?
     A: Sapphire offers excellent thermal stability, high hardness, and a lattice structure compatible with GaN, making it ideal for high-brightness LED production.

Tags: #​​Sapphire Blank, #Custom, #High Hardness, #Size 18mm×74mm×8mm, #High Hardness, #Infrared Windows​​