01 September 2019: We are now providing an updated product called BNNT SP10. We find SP10 to be preferable to P1-Beta for most applications. The BNNTs in SP10 are very similar compared to those in our previous P1-Beta product. However, SP10 has fewer h-BN nanosheets, but slightly more h-BN nanocages than P1-Beta. The elemental boron content of BNNT SP10 is typically 40-50 wt.%, which makes the material grey. The elemental boron in SP10 is easily removed, as in our refined product, SP10-R.  SP10-R-P, a powdered form of SP10-R, is also available. All our BNNT materials are catalyst-free.

Pictured: (Upper, left to right) As-synthesized SP10 puffball, refined (elemental boron removed) puffball (SP10-R), and powder (SP10-R-P) (Lower) BNNT mat (SP10-R-M) is 1 mg/cm2 (35 mm diameter shown, other sizes and densities available by request).

BNNT SP10 Puffball

Boron isotope % h-BN contenta
(nanotubes, nanosheets, nanocages)
Availability Price (USD/gram)
natural boron (~80% 11B, ~20% 10B)  50%  Immediate  700
 10B-enriched (>96% 10B)  50%  Immediate  800
 11B-enriched (>98% 11B)  50%  Immediate  800

BNNT SP10-R Refined Puffball

Boron isotope % h-BN contenta
(nanotubes, nanosheets, nanocages)
Availability Price (USD/gram)
natB >99% 2 weeks production 1300
10B-enriched >99% 2 weeks production 1450
11B-enriched >99% 2 weeks production 1450

BNNT SP10-R-P Refined Powder

Boron isotope % h-BN contenta
(nanotubes, nanosheets, nanocages)
Availability Price (USD/gram)
natB >99% By request 1400
10B-enriched >99% By request 1550
11B-enriched >99% By request 1550

BNNT SP10-R-M Refined Matb

Boron isotope % h-BN contenta
(nanotubes, nanosheets, nanocages)
Availability Price (USD/gram)
natB >99% By request Varies by mat specifications
10B-enriched >99% By request Varies by mat specifications
11B-enriched >99% By request Varies by mat specifications


aResidual content is elemental boron. <1% elemental boron remains after our in-house refining treatment (strong acid-free) in R-series products.

bBNNT mats are custom made to order. We are currently producing circular buckypapers with densities ≥ 1 mg/cm2 and diameters ranging from 15 mm to 25 cm in limited quantities. Contact us with your specifications for more information and to request a quote.

Boron Nitride Nanotubes (BNNTs) vs. Carbon Nanotubes (CNTs)

Boron nitride nanotubes (BNNTs), structural analogs of carbon nanotubes (CNTs), have numerous exceptional properties that make them suitable for high temperature composites, electrically isolating thermal management materials, and radiation shielding or detection (depending on boron isotope enrichment).

  Boron nitride nanotubes (BNNT) Carbon nanotubes (CNT)
Electrical  Insulating
(~5.7 eV wide-bandgap semiconductor)
 Metallic or semiconducting
Optical Strong UV absorbers and transparent in the visible; visible emitters Ultraviolet, visible, and near-infrared absorbers; semiconductors are near-infrared emitters
Radio Frequency transparency Yes (e.g. for 5G or radar) No
Thermal stability Stable to at least 800°C in air Up to 480°C
Thermal neutron capture cross section Boron isotope enrichment dependent (10B ~3825 barns vs. 11B ~0.0055 barns; N = 1.9 barns) C = 0.0035 barn
Bond polarity Polar (B-N) Nonpolar (C-C)
Piezoelectric behavior Yes (0.25 – 0.4 C/m2) Yes
Surface morphology Corrugated Smooth
Color White or translucent Black
Toxicity Very low, possibly no cytotoxicity Yes
Theoretical thermal conductivity
(vs. copper ~400 W/m∙K)
~3,500 W/m∙K (axial)
Mechanical strength
(Young's modulus)
~1.2 TPa
Coefficient of thermal expansion (CTE) -1 x 10-6

BNNT, LLC's goal is to provide the raw and purified BNNT for science, product R&D, and game changing products.

BNNT SP10 Technical Data

Download pdf or view online Technical Data for the BNNT Material Produced by BNNT, LLC by HTP Method.