Overview of boron nitride powder

We offer a wide range of boron nitride powders, purity and grain sizes from 1 to more than 100μm. The grades of these powders may vary depending on:

• Purity
• Grain distribution and size
• Level of agglomeration
• Specific surface area
• Additives

These characteristics affect:

• Interaction with other materials
• Dispersion of particles
• Lubrication
• Thermal conductivity
• Electrical insulation

Advantages

• Use at very high temperatures, 900°C in air, up to 2500°C in a vacuum or inert atmosphere
• High thermal conductivity
• Very good electrical insulation
• Low coefficient of friction, very good lubricant
• Not wet by most metals, glasses, etc.

Applications

• Removal
• Lubrication
• Coating
• Polymer filler

Our range of boron nitride powders

Grade 301

Boron nitride in its pure state possesses moderately fine particles with a well-marked crystallinity. This grade is distinguished by its wide spectrum of particle size and a small proportion of agglomerates.

Advantages

• Good electrical insulation
• High heat dispersion
• Impeccably clean
• Reduced proportion of agglomerates
• Medium surface area
• Optimal separator and lubricant effect, even in extreme temperatures thanks to high resistance to oxidation

Application

• Improved high temperature properties of oils and greases
• Filler for separating agents
• Filler for plastics

Grade 302

Boron nitride in its pure state possesses very fine particles and a well-marked crystallinity. This grade is distinguished by its wide spectrum of particle size and a small proportion of agglomerates. Its specific surface area has a high value thanks to its extremely fine quality.

Advantages

• Good electrical insulation
• High heat dispersion
• Impeccably clean
• Very fine
• Few agglomerates
• High specific surface area
• Optimal separator and lubricant effect, even in extreme temperatures thanks to high resistance to oxidation

Application

• Improved high temperature properties of oils and greases
• Filler for separating agents

Grade 303

Hexagonal boron nitride powder with a marked platelet structure and a high degree of purity.

Advantages

• Optimal separator and lubricant effect, even at high temperatures
• Good resistance to oxidation/air up to 900°C
• Temperature resistant in protective gas or under vacuum up to 2000°C
• Electrical insulation
• High heat dispersion
• Impeccably clean
• Harmless

Application

• Improved high temperature lubricating properties of oils and greases
• Filler for separating and lubricating agents
• Filler for applications using plastics

Grade 304

Pure and very crystalline boron nitride powder thanks to the typical properties of boron nitride, this product is suitable for a great number of uses. Its specific surface area and granulometry has moderate values.

Advantages

• Good electrical insulation
• High heat dispersion
• Impeccably clean
• Agglomerate-free
• Low granulometry
• Optimal separator and lubricant effect, even in extreme temperatures thanks to high resistance to oxidation

Application

• Additive for liquid separating and levelling agents
• Additive for separating and lubricating agents
• Filler for applications using plastics
• Treats coatings

Grade 305

Pure crystalline hexagonal nitride powder, highly crystalline, distinguished by its particularly low particle size. The average particle size is 2.0μm.

Advantages

• Good electrical insulation
• High heat dispersion
• Impeccably clean
• Very fine
• Agglomerate-free
• Low granulometry
• Optimal separator and lubricant effect, even in extreme temperatures thanks to high resistance to oxidation

Application

• Additive for liquid separating and levelling agents
• Additive for separating and lubricating agents
• Filler for coatings

Grade 307

This is a product of great purity with a marked crystalline structure. The crystals measure up to 40μm. Its properties, as well as the high thermal conductivity inherent to boron nitride, make it the ideal filler for plastics whose thermal conductivity needs to be increased. At the same time, the electrical insulation properties are preserved. Its structure allows a high concentration with a small increase in viscosity. It is very low hardness helps avoid tool wear compared to aluminium oxide, magnesium oxide and other fillers.

Advantages

• High heat dispersion
• Impeccably clean
• Allows high concentration
• Very large crystals
• Very limited surface area
• No abrasion of the final product
• Minimum tool wear compared to other fillers due to its low hardness

Application

• Filler for thermally conductive pastes
• Filler for silicone resins, thermoplastics, hard plastics

Grade 308

This has a high degree of purity and crystallinity. The high purity, low density, and high thermal conductivity inherent to boron nitride make it a good filler for plastics whose thermal conductivity needs to be increased. At the same time, the electrical insulation properties are preserved. Thanks to its structure, low to medium filling levels are possible, which allows it to dissipate heat. It is very low hardness helps avoid tool wear, particularly with respect to aluminium oxide, magnesium oxide and other fillers.

Advantages

• Electrical insulation
• High heat dispersion
• Impeccably clean
• Large crystals
• Average surface area
• No abrasion of the final product
• Minimum tool wear compared to other fillers due to its low hardness

Application

• Filler for thermally conductive pastes
• Filler for silicone resins, thermoplastics, hard plastics

Grade 309

This boron nitride powder is distinguished by a particularly high specific surface area as well as a crystalline structure. The crystallites of the micro-grains constitute large agglomerates with an average particle size of 9μm. The large surface area helps obtain a good distribution in fluid systems.

Vorteile

• Very high surface area
• Electrical insulation
• High heat dispersion

Application

• Additive for liquid separating and levelling agents
• Additive for separating and lubricating agents

Grade 310

It is distinguished by its high purity and the size of these crystallites. Its high degree of crystallinity gives this material exceptional lubricating properties. In addition, the distribution of the particle size of the powder as well as the specific surface area are relatively small. When used as a filler, the viscosity of the matrix is hardly affected.

Vorteile

• Electrical insulation
• High heat dispersion
• Large crystals
• Low specific surface area
• Minimum tool wear compared to other fillers due to its low hardness

Application

• Filler for improving high temperature properties in oils and greases
• Increased thermal conductivity of plastics
• Filler for coatings

Grade 311

It is distinguished by its high purity and the size of these crystallites. Its high degree of crystallinity gives this material exceptional lubricating properties. It is used as a filler to increase thermal conductivity.

Advantages

• Electrical insulation
• High heat dispersion
• Good lubricity
• Low viscosity increase
• Minimum tool wear compared to other fillers due to its low hardness

Application

• Filler for silicone resins and thermosets
• Increased thermal conductivity of plastics
• Filler for composites

Grade 312

Due to a specific agglomeration of large single crystallites to agglomerates of medium density, this grade is very well suited as filler and additive in plastics, for increasing the thermal conductivity and keeping the electrical insulation at the same time.

Advantages

• Very high thermal conductivity
• Increase in through-plane thermal conductivity
• High filling degree possible in the system
• Low viscosity increase
• Good free flowing characteristics due to the granular particle structure 
• Electrically insulating 
• Flame-retardant effect in plastics
• Minimum tool wear compared to other filler materials 

Applications

• Filler in plastics to increase the thermal conductivity
• In applications without limitation in particle size 
• Liquid systems such as adhesives and potting compounds
• Thermal interface materials, gap fillers

Grade 313

Grade 313 is a Boron Nitride powder with good crystallinity and with a high efficiency level. Its fine particle size and low agglomerate content makes it suitable for a wide variety of applications.

Advantages

• Optimum release and lubricating properties - also at high temperatures
• Very good distribution within liquid systems
• Electrically insulating
• High purity
• Very low formation of agglomerates
• High specific surface area
• Physiologically safe

Applications

• Filler and additive in liquid release agents and refractory coatings
• High temperature additive in lubricants

Grade 315

Due to a specific agglomeration of large single crystals to agglomerates of high density, this quality is particularly suitable as filler and additive in plastics for increasing the thermal conductivity while keeping the electrical insulation at the same time.

Advantages

• Very high thermal conductivity
• High grade of agglomeration
• High filling degree possible in the system
• Low viscosity increase 
• Best free flowing characteristics due to the granular particle structure 
• Electrically insulating 
• Flame-retardant effect in plastics
• Minimum tool wear compared to other filler materials

Applications

• Filler in plastics to increase the thermal conductivity
• In applications without limitation in particle size 
• Liquid systems such as adhesives and potting compounds
• Thermal interface materials, gap fillers

Summary table