Boron Nitride | McMaster-Carr

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Thermal Conductivity @ Temperature

319 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F

31.4 W/(m⋅°C) @ 212° F

Additive

Boron Nitride

Ceramic

For Use On

3D Printer Extruder Heating Elements

Electrical Components

DFARS Specialty Metals

REACH

Minimum Temperature

For Use With

Export Control Classification Number (ECCN)

1C225

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

RoHS

Lubricant Type

Trade Name

DuPont® Non-Stick Dry Film Lubricant

Container Size

Manufacturer

Container Net Weight

Melting Temperature

49 Products

About Composites

Compare our offering of composites to find the right material for you.

Electrically-Insulating Boron Nitride Ceramic Sheets and Bars

Also known as white graphite, boron nitride ceramic is an excellent electrical insulator that is often used in high-temperature, high-power electrical applications, such as arc welding and semiconductor equipment. It's a low-friction material with a slippery feel.

Sheets

										5" Long		6" Long		12" Long
Thk.	Thk. Tolerance	Wd.	Color	Temp. Range, ° F	Fabrication	Performance	Dielectric Strength, V/mil	Porosity	Compressive Strength, psi		Each		Each		Each
1/16"	-0.010" to 0.010"	3"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K11	0000000	———	0	———	0
1/8"	-0.010" to 0.010"	5"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	———	0	84995K12	0000000	———	0
1/4"	-0.010" to 0.010"	5"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	———	0	———	0	84995K13	0000000
3/8"	-0.010" to 0.010"	5"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	———	0	84995K14	000000	84995K15	000000
1/2"	-0.010" to 0.010"	5"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	———	0	———	0	84995K16	00000000

Bars

										6" Long		12" Long
Thk.	Thk. Tolerance	Wd.	Color	Temp. Range, ° F	Fabrication	Performance	Dielectric Strength, V/mil	Porosity	Compressive Strength, psi		Each		Each
1/8"	-0.010" to 0.010"	1/8"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K41	000000	84995K51	000000
1/4"	-0.010" to 0.010"	1/4"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K42	00000	84995K52	000000
3/8"	-0.010" to 0.010"	3/8"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K43	00000	84995K53	000000
1/2"	-0.010" to 0.010"	1/2"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K44	000000	84995K54	000000
3/4"	-0.010" to 0.010"	3/4"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K45	000000	84995K55	000000
1"	-0.010" to 0.010"	1"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K61	000000	84995K71	000000
1 1/2"	-0.010" to 0.010"	1 1/2"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K62	000000	84995K72	000000
2"	-0.010" to 0.010"	2"	White	32 to 1,020	Sintered	Electrically Insulating	1,270	7%	16,000	84995K63	000000	84995K73	00000000

Electrically-Insulating Boron Nitride Ceramic Rods

			Temp., ° F								6" Lg.		12" Lg.
Dia.	Dia. Tolerance	Color	Min.	Max.	Fabrication	Performance	Dielectric Strength, V/mil	Porosity	Compressive Strength, psi	Hardness		Each		Each



	1/8"	0.000" to 0.020"	White	32	1,020	Sintered	Electrically Insulating	1,270	7%	16,000	Knoop 19 HK 0.1	84995K21	000000	84995K31	0000000


	1/4"	0.000" to 0.020"	White	32	1,020	Sintered	Electrically Insulating	1,270	7%	16,000	Knoop 19 HK 0.1	84995K22	00000	84995K32	000000
	3/8"	0.000" to 0.020"	White	32	1,020	Sintered	Electrically Insulating	1,270	7%	16,000	Knoop 19 HK 0.1	84995K23	00000	84995K33	000000
	1/2"	0.000" to 0.020"	White	32	1,020	Sintered	Electrically Insulating	1,270	7%	16,000	Knoop 19 HK 0.1	84995K24	000000	84995K34	000000
	3/4"	0.000" to 0.020"	White	32	1,020	Sintered	Electrically Insulating	1,270	7%	16,000	Knoop 19 HK 0.1	84995K25	000000	84995K35	000000
	1"	0.000" to 0.020"	White	32	1,020	Sintered	Electrically Insulating	1,270	7%	16,000	Knoop 19 HK 0.1	84995K26	000000	84995K36	000000
	1 1/4"	0.000" to 0.020"	White	32	1,020	Sintered	Electrically Insulating	1,270	7%	16,000	Knoop 19 HK 0.1	84995K28	000000	84995K38	000000
	1 1/2"	0.000" to 0.020"	White	32	1,020	Sintered	Electrically Insulating	1,270	7%	16,000	Knoop 19 HK 0.1	84995K27	000000	84995K37	000000

Dry-Film Lubricants

Aerosol

Can

These lubricants go on wet for easy application. Once dry, they form a nonstick film that won't attract dust. Use them for general purpose lubricating in most applications.

Pail—Dilute 1-gallon pail with water before using.

Boron Nitride Additive—Lubricants with boron nitride resist corrosion from salt water and won’t wash off.

Ceramic Additive—Lubricants with ceramic are often used in extreme-temperature applications, such as welding, metal processing, and glassmaking.

	Container					Each		Package
	Size, gal.	Net Wt., oz.	Type	Additive	Temp., ° F		Each	Pkg. Qty.		Pkg.
DuPont® Non-Stick Dry-Film Lubricant



		—	14	Aerosol Can	Boron Nitride	-100 to 480	8710T838	000000	6	8710T867	000000


		Lubricants



				—	13	Aerosol Can	Boron Nitride, Ceramic	32 to 1,560	10515K35	00000	12	10515K351	000000


				1	—	Pail	Boron Nitride, Ceramic	32 to 1,560	10515K68	000000	—	———	0

Additives and Fillers for Paints, Coatings, and Lubricants

When mixed into coatings, resins, polymers, and metals, these fillers enhance strength, conductivity, lubricity, and other physical properties.

		Container
Material	Concentration	Net Wt., oz.	Type	Material	Form	Particle Size, μm	CAS No.		Each
Boron Nitride	99.9%	1.8	Jar	Plastic	Powder	0.5	10043-11-5	1402N13	0000000

Non-Bonding Heat Transfer Compounds

Also known as thermal paste, these boron-nitride compounds increase heat transfer between parts while preventing them from sticking. Unlike antiseize compounds, they don't conduct electricity, so you won't risk shorting out sensitive electronics. They're often used on thermocouple probes to improve accuracy. You can also use them in 3D printer heating blocks and other high-temperature areas to keep parts from fusing together.

Container
Size, fl. oz.	Type	Chemical	Max. Temp.	Thermal Conductivity @ Temp.	Color	Includes	For Use On	For Use With		Each



	0.2	Syringe	Boron Nitride	1,562° F 850° C	31.4 W/(m⋅°C) @ 212° F	White	Three Applicator Brushes	3D Printer Extruder Heating Elements, Electrical Components	Aluminum, Brass, Copper, Iron, Nickel, Stainless Steel, Steel, Titanium	3715N11	000000


	1	Syringe	Boron Nitride	1,562° F 850° C	31.4 W/(m⋅°C) @ 212° F	White	—	3D Printer Extruder Heating Elements, Electrical Components	Aluminum, Brass, Copper, Iron, Nickel, Stainless Steel, Steel, Titanium	3715N12	00000

Bearing Grease


Tube	Grease Gun Cartridge

This grease is wear resistant for use in a wide range of bearing types.

Grease lubricates most efficiently within the listed temperature range.

Chemours—Chemours Krytox™ grease is long lasting with an indefinite shelf life.

Krytox™ XHT-BDX—Krytox™ XHT grease can be used at extremely high temperatures.

Boron Nitride Thickener—Grease with boron nitride thickener has excellent heat resistance and good moisture and oxidation resistance.

2 NLGI Grade—NLGI 2 is about the consistency of peanut butter.

Nonmelting—Nonmelting grease can be used at temperatures above the maximum temperature briefly, but then will break down more quickly.

Melting Temperature—Melting temperature is the point at which grease will fail and run out of equipment, leaving it to run dry.

			Container		Temp., ° F
	NLGI Consistency Grade	Base Oil	Size, fl. oz.	Type	Min.	Max.	Melting Temp.	Color		Each
Chemours Krytox™ XHT-BDX—Boron Nitride Thickener



		2	Synthetic Oil	2	Tube	5	660	Not Rated	White	10195K22	0000000


		2	Synthetic Oil	8	Tube	5	660	Nonmelting	White	10195K24	000000
		2	Synthetic Oil	14	Grease Gun Cartridge	5	660	Nonmelting	White	10195K44	00000000