ChemicalBook >> CAS DataBase List >>Zirconium Boride

Zirconium Boride

Chemical Name:
Zirconium Boride
ZRB2 B;ZirconiuM borid;Einecs 234-963-5;ZIRCONIUM BORIDE;ZIRCONIUM DIBORIDE;zirconiumboride(zrb2);ZIRCONIUM BORIDE 95+%;Zirconium boride/ 99+%;ZIRCONIUM BORIDE: 99.5%;ZirconiuM Boride, Powder
Molecular Formula:
Molecular Weight:
MDL Number:
MOL File:
MSDS File:
Last updated:2024-05-30 15:30:03

Zirconium Boride Properties

Melting point 3100-3500°C
Density 6,1 g/cm3
RTECS ZH7150000
form powder
color gray refractory solid; hexagonal, hexane
Resistivity 9.2 (ρ/μΩ.cm)
Water Solubility It is insoluble in water.
Crystal Structure Hexagonal
Exposure limits ACGIH: TWA 5 mg/m3; STEL 10 mg/m3
NIOSH: IDLH 25 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3
EPA Substance Registry System Zirconium boride (ZrB2) (12045-64-6)


Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
Signal word  Warning
Hazard statements  H228
Precautionary statements  P210-P240-P241-P280-P370+P378a
Hazard Codes  Xn
Risk Statements  20/21/22
Safety Statements  36
WGK Germany  3
HazardClass  4.1
PackingGroup  III
NFPA 704
0 0

Zirconium Boride price More Price(5)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Alfa Aesar 012140 Zirconium boride 99.5% (metals basis excluding Hf) 12045-64-6 50g $131 2023-06-20 Buy
Alfa Aesar 012140 Zirconium boride 99.5% (metals basis excluding Hf) 12045-64-6 250g $460 2023-06-20 Buy
Alfa Aesar 047030 Zirconium boride 99.5% (metals basis excluding Hf) 12045-64-6 50g $148 2023-06-20 Buy
Alfa Aesar 047030 Zirconium boride 99.5% (metals basis excluding Hf) 12045-64-6 250g $556 2023-06-20 Buy
TRC Z485063 Zirconium boride 12045-64-6 500mg $45 2021-12-16 Buy
Product number Packaging Price Buy
012140 50g $131 Buy
012140 250g $460 Buy
047030 50g $148 Buy
047030 250g $556 Buy
Z485063 500mg $45 Buy

Zirconium Boride Chemical Properties,Uses,Production


Zirconium diboride (ZrB2) is a highly covalent refractory ceramic material with a hexagonal crystal structure. ZrB2 is known as a UHTC with a melting point of 3246C. This together with its relatively low density of B6.09 g/cm3 (measured density may be higher due to hafnium impurities) and good high-temperature strength makes it a contender for high-temperature aerospace applications, for example, hypersonic flight or rocket propulsion systems. It is an unusual ceramic with relatively high thermal and electrical conductivities.

Chemical Properties

Zirconium boride, also known as zirconium diboride, a gray metallic crystals or powders. Mohs hardness 8, electrical resistivity 9.2 micro-ohm-cm (20°C), excellent thermal shock resistance, poor oxidation resistance above 1100°C. It was attacked very little by cold HCl, more rapidly by HNO3, and is dissolved by aqua regia. It reacts with H2SO4 and is readily attacked by fused alkali hydroxides, carbonates, and disulfides.
Zirconium diboride
Zirconium diboride (ZrB2) is a transition metal boride with a hexagonal crystal structure and P6/mmm symmetry. ZrB2 has a combination of metallic, ionic, and covalent bonds. Due to its strong covalent bonds, ZrB2 has a high melting temperature of 3250°C. This melting temperature classifies ZrB2 as an ultra-high temperature ceramic (UHTC). UHTCs have been proposed for use in many different applications due to their high melting temperatures (>3000°C), as well as their high strength and chemical inertness.

Physical properties

Gray metallic crystals, excellent thermal shock resistance, greatest oxidation inertness of all refractory hardmetals. Hot-pressed crucible for handling molten metals such as Zn, Mg, Fe, Cu, Zn, Cd, Sn, Pb, Rb, Bi, Cr, brass, carbon steel, cast irons, and molten cryolithe, yttria, zirconia, and alumina. Readily corroded by liquid metals such as Si, Cr, Mn, Co, Ni, Nb, Mo, Ta and attacked by molten salts such as Na O, 2 alkali carbonates, and NaOH. Severe oxidation in air occurs above 1100–1400°C. Stable above 2000°C in inert or reducing atmosphere.


Zirconium boride is use to improve resistance in zirconia-based, carbon-bonded refractories in contact with ferrous melts. Used in nuclear applications, aerospace refractory, in cutting tools and to protect thermocouple tubes. It also used in use of its relatively high conductivity, especially for a ceramic.


Zirconium diboride (ZrB2) is an ultra high termparature ceramic powder. With good high temperature strength, it is used in the aerospace industry for hypersonic flight or rocket propulsion. ZrB2 is a kind of senior engineering material broadly used in various fields. Refractory for aircraft and rocket applications, thermocouple protection tubes, high temperature electrical conductor, cutting tool component, coating tantalum, cathode in high-temperature electrochemical systems.

Industrial uses

Zirconium boride is a microcrystalline graypowder of the composition ZrB2. When compressedand sintered to a specific gravity ofabout 5.3, it has a Rockwell A hardness of 90,a melting point of 2980°C, and a tensilestrength of 241 to 276 MPa. It is resistant tonitric and hydrochloric acids, to molten aluminumand silicon, and to oxidation. At 1204°Cit has a transverse rupture strength of 379 MPa.It is used for crucibles and for rocket nozzles.


Zirconium boride powder is mainly prepared by carbothermic reduction of ZrO2 powder and carbon black or graphite powder. The reaction equation is:
Zirconium boride obtained from zirconia and boron oxide by magnesiothermic MASHS.

Zirconium Boride Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 135)Suppliers
Supplier Tel Email Country ProdList Advantage
henan kanbei chemical co.,ltd
+undefined-86-1523780-4566 +undefined15237804566 China 511 58
+86-85511178 +86-85511178 China 35451 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512 China 21673 55
career henan chemical co
+86-0371-86658258 +8613203830695 China 29897 58
Chongqing Chemdad Co., Ltd
+86-023-6139-8061 +86-86-13650506873 China 39916 58
Shaanxi Dideu Medichem Co. Ltd
18192627656 China 1563 58
Antai Fine Chemical Technology Co.,Limited
18503026267 CHINA 9641 58
Zhengzhou Alfa Chemical Co.,Ltd
+8618530059196 China 13056 58
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418671 China 34571 58
Baoji Guokang Healthchem co.,ltd
+8615604608665 15604608665 CHINA 9427 58

Related articles

View Lastest Price from Zirconium Boride manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Zirconiumboride pictures 2023-06-03 Zirconiumboride
US $100.00 / kg 25kg 99% 500t/month Henan Bao Enluo International TradeCo.,LTD
Zirconium Boride pictures 2022-09-23 Zirconium Boride
US $0.00 / kg 1kg 99% 1000kg henan kanbei chemical co.,ltd
Zirconium Diboride pictures 2022-09-21 Zirconium Diboride
US $0.00 / kg 1kg 99% 1000kg henan kanbei chemical co.,ltd
  • Zirconiumboride pictures
  • Zirconiumboride
  • US $100.00 / kg
  • 99%
  • Henan Bao Enluo International TradeCo.,LTD
zirconium boride (zrb2) zirconium boride Zirconium boride(ZrB2) ZIRCONIUM DIBORIDE: GRADE A, A PRODUCT OF H.C. STARCK ZIRCONIUM DIBORIDE, GRADE B, A PRODUCT OF H.C. STARCK ZIRCONIUM BORIDE: 99.5% Zirconium boride, 99.5% (metals basis excluding Hf) ZIRCONIUM BORIDE Einecs 234-963-5 Zirconium diboride (zrb2) Zirconium boride (metals basis excluding Hf) Zirconium boride/ 99+% ZirconiuM borid ZirconiuM Boride, Powder Zirconium boride, 99.5% trace metals basis Zirconium boride powder (ZrB2) ZIRCONIUM DIBORIDE, POWDER, <5 MICRON, 9 5% Zirconiumboride,99.5%(metalsbasis) ZRB2 B ZIRCONIUM DIBORIDE zirconiumboride(zrb2) ZIRCONIUM BORIDE 95+% Zirconium Carbide Powder , Cubic ,(ZrC) Zirconium Boride ISO 9001:2015 REACH Zirconium diboride, 99.5% Zirconium diboride, APS 100-200 nm, 99.5% Zirconium boride, 325 mesh, 99.5% Zirconium boride powder (ZrB2) 0.5 μm Zirconium boride, 325 mesh Strontium (Sr) Sputtering Targets 12045-64-6 B2Zr