Description

Boron Carbide CAS NO 12069-32-8 is an extremely hard synthetic ceramic material, chemically represented as B₄C. This compound is valued for its exceptional hardness, high neutron absorption cross-section, and excellent chemical inertness, making it a critical material for demanding industrial applications. It is primarily sought by manufacturers in the abrasives, armor, nuclear, and refractory industries for its superior performance characteristics.

Application

• Abrasive Blasting & Lapping: Used in powder form for precision grinding, polishing, and lapping of hard metals, ceramics, and gemstones due to its extreme hardness, second only to diamond and cubic boron nitride.
• Ballistic Armor: A key component in lightweight, high-performance ceramic composite plates for personal and vehicle armor, offering superior protection against high-velocity projectiles.
• Nuclear Reactor Control: Employed as neutron absorber rods, shielding, and control pellets in nuclear power plants due to its high thermal neutron capture cross-section.
• Refractory & Wear Parts: Utilized in high-temperature furnace linings, sandblasting nozzles, and other wear-resistant components where thermal stability and durability are paramount.
• Reinforcement in Composites: Added to metal matrix (e.g., aluminum) and ceramic composites to significantly enhance hardness, wear resistance, and stiffness.
• Semiconductor & Doping Applications: Used in specialized semiconductor manufacturing processes and as a dopant material.

Basic Information

Product Name	Boron Carbide
CAS No.	12069-32-8
Molecular Formula	B₄C
Molecular Weight	55.255 g/mol
Synonyms	Carbon tetraboride; Tetraboron carbide; Boron carbide (B4C); Norbide; Black Diamond (abrasive grade); IUPAC name: Tetraborane(12)-1-carbon; B₄C powder; Boron(IV) carbide
EINECS	235-111-5

Quality Control

Our Boron Carbide is manufactured under stringent process controls to ensure batch-to-batch consistency for critical applications. Quality is verified through a comprehensive suite of analytical tests, including particle size distribution (PSD), chemical purity, phase composition by XRD, and density measurements. A Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed to prevent moisture absorption and contamination from foreign particulates. Separate from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	Black or dark gray powder
Identification (XRD)	Complies (B₄C phase)
Assay (B₄C Content)	≥ 95% - 99.5%
Boron (B) Content	≥ 76% - 78%
Carbon (C) Content	≥ 20% - 22%
Free Carbon	≤ 0.5% - 2.0%
Free Boron	≤ 0.5%
Particle Size (D50)	1 µm - 100 µm (customizable)
Specific Surface Area (BET)	1 - 15 m²/g
Density (Theoretical)	~2.52 g/cm³
Hardness (Knoop, 100g)	~2900 - 3800 kg/mm²
Metallic Impurities (Fe, Al, etc.)	≤ 0.5% (total)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.