Boron metal
Properties
Chemical symbol: B
Name: Boron
CAS No.: 7440-42-8
Molar mass: 10.81 g/mol
Density: 2.46 g/cm³ (crystalline boron)
Melting point: approx. 2076 °C
Boiling point: approx. 3927 °C
Mohs hardness: approx. 9.3
Form: brown amorphous powder or hard dark crystalline solid
Boron is a chemical element belonging to the group of metalloids. Depending on the supplied form, it is available either as a fine brown amorphous powder or as a very hard, dark crystalline solid with a metallic luster. With a melting point of approximately 2076 °C and a boiling point of around 3927 °C, boron is classified as a high-melting element.
One of the most notable properties of boron is its exceptionally high hardness. Crystalline boron reaches approximately 9.3 on the Mohs scale, making it one of the hardest known solid materials. At room temperature, boron has very low electrical conductivity, while its semiconductor behavior becomes more pronounced as the temperature rises.
The boron-10 isotope has an exceptionally high thermal-neutron capture cross-section. This makes boron an effective neutron-absorbing material for nuclear applications. Chemically, boron is highly resistant to air, water and many acids at room temperature, while at elevated temperatures it exhibits strong reducing properties.
Boron reacts with metals to form extremely hard borides. Industrial production is mainly carried out by thermal reduction of boron trioxide with magnesium or by chemical vapor deposition (CVD).
The element boron is widely used in metallurgy, permanent magnets, nuclear technology and high-performance ceramics. In boron steels, it is added to improve hardenability and grain refinement, while it is also used in stainless steels and nickel-based alloys.
Would you like to buy boron? Auremo offers boron for various technical applications as well as other rare and specialty materials. The boron price and boron price per kg depend on purity, material form, order quantity and delivery conditions.
Advantages
• Extremely high hardness
• Improves abrasion and wear resistance of alloys and ceramics
• Highly effective thermal-neutron absorption
• High thermal stability
• Maintains mechanical performance at elevated temperatures
• Semiconductor behavior at higher temperatures
• Strong reducing properties at high temperatures
• Forms extremely hard borides with metals
Applications
• Metallurgy and alloy technology
• Boron steels
• Stainless steels and nickel-based alloys
• Improvement of hardenability and grain refinement
• NdFeB permanent magnets
• Electric motors and generators
• Nuclear technology
• Control rods and neutron-absorbing materials
• Boron-containing solutions for nuclear applications
• High-performance ceramics
• Production of boron carbide B₄C
• Production of titanium diboride TiB₂
• Armor materials
• Pyrotechnic and delay compositions
Auremo offers boron and other rare and specialty materials for industrial applications at competitive prices. If you have any questions about boron, available purity grades, product forms or delivery conditions, please contact us directly.
