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Sapphire Block 40×24×52 Al₂O₃ 99.999% Transmittance≥80% Precision Cutting

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Sapphire Block 40×24×52 Al₂O₃ 99.999% Transmittance≥80% Precision Cutting

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Brand Name : ZMSH

Model Number : Sapphire Block

Certification : rohs

Place of Origin : CHINA

MOQ : 25

Price : by case

Payment Terms : T/T

Supply Ability : 1000pcs per month

Delivery Time : 2-4 months

Packaging Details : package in 100-grade cleaning room

Dimensions : 40mm(±0.1mm)×24mm(±0.1mm)×52mm(±0.1mm)

Crystal Orientation : Available in C-plane (0001), A-plane (1120), R-plane (1102), etc., orientation accuracy ±0.5°

Surface Quality : Polished surface Ra≤5nm (optical grade), or ground surface (for mechanical processing)

Optical Properties : Refractive index 1.76@589nm, transmittance ≥80% (double-side polished, 0.4-4μm band)

Impurity Content : Fe, Ti and other metal impurities <10ppm, meeting electronic-grade purity standards

Applications : Optical Applications，Semiconductor Industry

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Product overview of sapphire block

Sapphire Block 40×24×52 Al₂O₃ 99.999% Transmittance≥80% Precision Cutting

The Sapphire block 40×24×52 is a high-purity synthetic sapphire (Al₂O₃) material block with dimensions of 40mm (L) × 24mm (W) × 52mm (H). Sapphire is widely used in high-end applications such as laser optics, semiconductor manufacturing, aerospace, medical devices, and scientific research due to its exceptional hardness (Mohs 9), excellent optical transparency (80%-85% visible light transmittance), outstanding thermal stability (melting point 2053°C), and chemical inertness. This specification of sapphire block is typically produced using EFG (Edge-defined Film-fed Growth) or KY (Kyropoulos) methods, ensuring defect-free crystals with low internal stress.

Technical specifications of sapphire block

Parameter Category

Specifications

Dimensions

40mm(±0.1mm)×24mm(±0.1mm)×52mm(±0.1mm)

Crystal Orientation

Available in C-plane (0001), A-plane (1120), R-plane (1102), etc., orientation accuracy ±0.5°

Surface Quality

Polished surface Ra≤5nm (optical grade), or ground surface (for mechanical processing)

Optical Properties

Refractive index 1.76@589nm, transmittance ≥80% (double-side polished, 0.4-4μm band)

Impurity Content

Fe, Ti and other metal impurities <10ppm, meeting electronic-grade purity standards

Key characteristics of sapphire block

Property

Detailed Description

Extreme Hardness

Mohs hardness of 9, second only to diamond, with superior scratch resistance

Optical Performance

Transmission range 0.15-5.5μm (UV to mid-IR), low birefringence (Δn≈0.008)

Thermal Stability

Melting point 2053°C, thermal conductivity 35-40W/(m·K), withstands extreme temperature variations

Chemical Inertness

Resistant to acids/alkalis (except HF and hot concentrated H₂SO₄), excellent oxidation resistance

Mechanical Properties

Compressive strength >2GPa, Young's modulus 345GPa, suitable for precision machining

Primary applications of sapphire block

Sapphire Block 40×24×52 Al₂O₃ 99.999% Transmittance≥80% Precision Cutting

① Optical Applications

  • Laser Windows: Transmission windows for high-power CO₂ lasers (10.6μm band), sapphire block is featuring high temperature resistance and laser damage threshold.
  • IR Optical Components: Missile domes and thermal imaging lenses, sapphire block is suitable for harsh environments.

② Semiconductor Industry

  • Substrate Material: Sapphire block can be used for GaN epitaxial growth in LED and RF device manufacturing.
  • Wafer Processing Carriers: Sapphire block is used in semiconductor polishing processes, offering wear resistance and contamination-free properties.

③ Industrial & Research

  • High-Pressure Windows: For diamond anvil cell (DAC) experiments to observe material behavior under extreme pressure.
  • Precision Instrument Bearings: Replacement for steel bearings in high-speed centrifuges, reducing friction losses.

④ Specialized Equipment

  • Spacecraft Windows: Sapphire block is resistant to micrometeoroid impacts and UV radiation in space.
  • Medical Devices: Protective lenses for endoscopes, sapphire block is capable of withstanding high-temperature sterilization.

ZMSH's services of sapphire block

As a leading sapphire material supplier, ZMSH provide not only standard sapphire blocks but also customized processing services including:

  • Precision Cutting (laser/wire saw, minimum kerf ≤50μm)
  • Ultra-Precision Polishing (surface roughness Ra≤5nm, optical grade)
  • Coating Services (AR anti-reflection coatings, laser damage-resistant coatings, etc.)
  • Orientation-Specific Processing (C-plane, A-plane, R-plane optimization)

With over 10 years of experience in sapphire material R&D and processing, ZMSH utilize advanced inspection equipment (interferometers, spectrophotometers, etc.) to ensure every sapphire block meets stringent military-grade and electronic-grade standards. Whether for small-scale research needs or large-scale industrial procurement, we offer professional technical support, rapid sample delivery, and stable long-term supply.

For detailed product specifications or free sample testing, please contact our Materials Engineering Team for one-on-one technical solution customization.

Sapphire Block 40×24×52 Al₂O₃ 99.999% Transmittance≥80% Precision CuttingSapphire Block 40×24×52 Al₂O₃ 99.999% Transmittance≥80% Precision Cutting

Q&A of sapphire block

1. Q: What are the main applications of sapphire blocks?

A: Sapphire blocks are primarily used in laser optics, semiconductor substrates, aerospace windows, and medical devices due to their extreme hardness and optical clarity.

2. Q: Why choose synthetic sapphire over natural sapphire for industrial use?

A: Synthetic sapphire offers superior purity, consistent quality, and customizable properties, making it more reliable for precision engineering applications than natural sapphire.

Tags: #Sapphire Block, # 40×24×52, #Al₂O₃ 99.999%, #Transmittance≥80%, #Precision Cutting


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