Sapphire Rod

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Sapphire Rod

  • Custom sizes and standard sizes in stock
  • Quick Lead Time
  • Competitive Price

  • Sapphire Rod is a high-purity single-crystal cylindrical material used for further processing in optical, electronic, and industrial applications. Grown with stable crystal orientation—often exposing the C-plane (0001) widely used in LED production—it offers strong mechanical strength, chemical stability, and durability under high temperatures. Available in diameters from 2 to 8 inches and customizable orientations and dimensions, Sapphire Rod provides a reliable base material for precision components, substrates, and advanced engineering needs. We can supply high-quality Sapphire Rods with various specifications and competitive prices, offering customized solutions to meet specific requirements.
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Sapphire Rod Data Sheet

Density

3.97–4.1 g/cm3

Materials

AI2O3

Melting Point

2045 ℃

Sapphire Rod Description

Sapphire Rod is produced as a uniform single-crystal cylinder with excellent hardness, optical stability, and resistance to chemical corrosion. Its consistent structure makes it suitable for slicing, polishing, and machining into precision parts such as optical substrates, mechanical components, and electronic devices. With customizable crystal orientations and a wide range of size options, it supports applications requiring strong durability and high thermal tolerance.

  • Sapphire Rod

Sapphire Rod Specifications

Item

Specification

Crystal Materials

99.999% High-Purity Monocrystalline Al₂O₃

Orientation

C-plane (0001), A-plane (11-20), M-plane (10-10), R-plane (1-102), N-plane (11-23), V-plane (22-43)

Diameter

2-inch, 4-inch, 6-inch, 8-inch, etc.

Flat

Upon request

Surface Finish

Fine Ground

Packaging

Single-piece packaging

Sapphire Infrared Transmittance at Different Thicknesses

Sapphire Infrared Transmittance at Different Thicknesses

Sapphire Rod Key Features

  • High Crystal Purity: Made from high-purity monocrystalline Al₂O₃ with stable crystal orientation for reliable performance.
  • Excellent Mechanical Strength: Features high hardness and durability, suitable for slicing, grinding, and precision machining.
  • Thermal and Chemical Stability: Maintains performance under high temperatures and is resistant to most acids and alkalis.
  • Multiple Crystal Orientations Available: Includes C-plane, A-plane, M-plane, R-plane, N-plane, and V-plane to meet different processing needs.
  • Customizable Dimensions: Offered in various diameters from 2 to 8 inches with options for custom size, flat, and surface finish.

Sapphire Rod Applications

  • LED Substrates: Used to produce C-plane sapphire wafers widely applied in LED manufacturing.
  • Optical Components: Serves as raw material for lenses, windows, prisms, and other precision optical parts.
  • Electronic Devices: Applied in laser components, insulating parts, and high-temperature semiconductor applications.
  • Industrial Machinery: Used to fabricate wear-resistant and corrosion-resistant parts such as shafts, pins, and guides.
  • Scientific Research: Supports crystal growth studies, experimental setups, and advanced material development requiring high-purity single-crystal structures.
  • Scientific Research
    Electronic Devices
  • Optical Components
    Industrial Machinery
  • LED Substrates
    LED Substrates
  • Industrial Machinery
    Optical Components
  • Electronic Devices 1
    Scientific Research

Sapphire Material Properties

Property

Specification

Chemical Formula

Aluminum Oxide (Al₂O₃), single crystal

Crystal System

Trigonal, hexagonal lattice

Melting Point

2045℃

Property

Specification

Density

3.97–4.1 g/cm³

Specific Heat

0.18 Cal/g·K (25℃); 750 J·kg⁻¹·K⁻¹ (25°C)

Thermal Conductivity

35–40 W·m⁻¹·K⁻¹ @20°C

Thermal Expansion Coefficient

Parallel: 6.7 × 10⁻⁶/K; Perpendicular: 5.0 × 10⁻⁶/K

Poisson’s Ratio

0.28

Apparent Porosity

0%

Water Absorption

0%

Property

Specification

Hardness

Mohs: 9

Hardness (Knoop)

2000 kgf/mm²

Hardness (Vickers)

1700–1800 kgf/mm²

Elastic Modulus

340–380 GPa

Compressive Strngth

2.1 GPa

Tensile Strength

0.19 GPa

Flexural Strength

448 MPa

Property

Specification

Melting Point

2045℃

Continuous Use Temperature

1800–1950℃

Thermal Expansion Coefficient

Parallel: 6.7 ×10⁻⁶/K; Perpendicular: 5.0 ×10⁻⁶/K;

Thermal Conductivity

35–40 W·m⁻¹·K⁻¹

Specific Heat

0.18 Cal/g·K / 750 J·kg⁻¹·K⁻¹

Property

Specification

Resistivity

>10¹⁶ Ω·cm (25℃)

Dielectric Constant

7.5–10

Dielectric Strength

15–50 kV/mm

Property

Specification

Refractive Index

Parallel: 1.769; Perpendicular: 1.76; Range: 1.71–1.79

Transmission Range

86% (280–3500 nm); Useful range: 200–5500 nm

Sapphire Products Packaging

Sapphire Products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.

ceramic products packing HM

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We will check and get back to you in 24 hours

To customize your sapphire rod, please provide the following details:

  1. Dimensions: Length, width, height, or diameter.
  2. Purity of the material
  3. Tolerances: Specify the tolerances you can apcept.
  4. Surface Finish: polished, rough, etc.
  5. Quantity of the products you need
  6. Alternatively, you can provide a drawing with your specifications

Once we have these details, we can provide you with a quote within 24 hours.

We carry a wide variety of alumina products in stock, and for these, there is generally no minimum order requirement. However, for custom orders, we typically set a minimum order value of $200. The lead time for stock items is usually 1-2 weeks, while custom orders usually take 3-4 weeks, depending on the specifics of the order.

es. Sapphire rods maintain their structural and optical properties under extreme temperatures, making them suitable for furnaces, high-power lighting, and thermal measurement devices.

Sapphire has strong resistance to acids, alkalis, and most corrosive substances, so the rods retain integrity even in harsh chemical environments.

Advanced Ceramic Hub, established in 2016 in Colorado, USA, is a specialized supplier and manufacturer of graphene products. With extensive expertise in supply and export, we offer competitive pricing and customized solutions tailored to specific requirements, ensuring outstanding quality and customer satisfaction. As a professional provider of ceramics, refractory metals, specialty alloys, spherical powders, and various advanced materials, we serve the research, development, and large-scale industrial production needs of the scientific and industrial sectors.

Sapphire Rod

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