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Elemental Boron

Elemental Boron – Crystalline & Amorphous

Elemental boron is the foundation of BoronHub’s portfolio, divided into high-purity crystalline boron and amorphous boron for distinct industrial applications.

High-Purity Crystalline Boron (4N–6N)

β-rhombohedral structure, available as grey-brown powder (>500μm) or granules (1–10 mm), with purity from 99.99% (4N) to 99.9999% (6N). It offers exceptional chemical stability, Mohs hardness of 9.3, melting point of 2076 °C, and semiconductor properties. Used in silicon wafer doping, superhard material synthesis (e.g., CBN), aerospace alloys, and high-energy fuels.

Amorphous Boron (2N–3N)

α-tetragonal short-range ordered structure, dark brown powder (>500μm). It is chemically reactive: oxidation starts at 300 °C, ignition at 700 °C, and it dissolves in concentrated alkalis with hydrogen release. Applications include rocket propellants, airbag initiators, alloy steels, boron fibers, and synthesis of boron halides and rare earth borides (e.g., LaB₆).

Customization

BoronHub offers full flexibility across purity (2N–6N), particle size (submicron to 10 mm), and crystal form (α/β). Products are vacuum-sealed in aluminum foil bags or inert-gas PTFE bottles, 12-month shelf life. Tailored specifications available for semiconductor, nuclear, aerospace, metallurgy, and fine chemical industries.

6N Purity Crystalline Boron Pellets for Semiconductor Dopant
Crystalline Boron features a β-rhombohedral structure and represents the most stable allotrope of elemental boron known to date. It is supplied as grey-brown powder (15–60 μm) or granules (1–10 mm), with purity grades ranging from 2N to 6N. It delivers outstanding chemical inertness and superior oxidation resistance at ambient temperature. With a Mohs hardness of 9.3 — second only to diamond — and a low density of merely 2.34 g/cm³, it is hailed as the lightest metalloid. Its melting point reaches 2076 °C, granting exceptional thermal stability. It is widely adopted in semiconductor doping, superhard material synthesis, special alloys, aerospace and military industries.
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3N Amorphous Boron Powder/Pellet Cas No.7440-42-8
Amorphous Boron adopts an α-tetragonal crystal system and appears as dark brown to slight yellow powder. The customized amorphous boron powder independently developed by BoronHub is a high-end product. After deep processing, its purity can reach 99%–99.9%. The standard D50 particle size is ≤2 μm, and submicron powder finer than 500 nm can be customized. It boasts excellent chemical activity: oxidation commences at 300 °C, and it is highly flammable at 700 °C. It dissolves in concentrated alkalis with hydrogen released. It is widely used in solid rocket propellants, nuclear shielding boron steel, synthesis of rare earth borides, airbag initiators and other sectors.
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