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Spherical hafnium powder

Hafnium powder is a shiny hexagonal gray crystal with a melting point of 2227°C, a density of 13.31, and a boiling point of 4602°C. It is soluble in hydrofluoric acid, aqua regia, and concentrated sulfuric acid. Its powdered form is chemically reactive and can undergo oxidation reactions or even spontaneous combustion when exposed to air. There is a risk of combustion and explosion when it comes into contact with open flames, high heat, or oxidizers, and it can react violently with elements such as fluorine and chlorine.

Commodity name： Spherical hafnium powder

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3D Printing Metal Powder Series

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Product Overview:

Hafnium powder is a shiny hexagonal gray crystal with a melting point of 2227℃, a density of 13.31, a boiling point of 4602℃, and is soluble in hydrofluoric acid, aqua regia, and concentrated sulfuric acid. Its powdered form has high chemical reactivity, and it undergoes oxidation reactions or even spontaneous combustion when exposed to air. It poses a combustion and explosion hazard when in contact with open flames, high heat, or oxidizers, and can react violently with fluorine, chlorine, and other substances.

Hafnium powder is mainly used to make control rods for atomic reactors, as well as for deoxidizers and additives in hard alloys. It can also be used in the manufacture of rocket thrusters, cathodes for X-ray tubes, rocket nozzles, and leading edge protection layers for aircraft, and serves as an additive in heat-resistant alloys, as well as a gas absorbent in inflating systems and an additive in hydraulic oils.

Our company's spherical hafnium powder features high purity, good sphericity, no satellite particles, and very few hollow particles, making it suitable for 3D printing, hot isostatic pressing, laser cladding, and other processes.

Available conventional powder particle sizes: 5-25μm, 15-53μm, 45-106μm, 53-150μm.

Product Parameters:

Chemical Composition
Element	Content (wt%)	Testing Method		Element	Content (wt%)	Testing Method
Hf	≥99.8	-		Si	＜0.005	ICP-AES
Al	≤0.01	ICP-AES		Nb	＜0.01	ICP-AES
W	＜0.005	ICP-AES		Fe	＜0.01	ICP-AES
Zr	＜0.5	ICP-AES		Other	＜0.05	-
Gas Impurities
Element	Content (wt%)	Testing Standards		Element	Content (wt%)	Testing Standards
O	＜0.2	YS/T 1467.10-2021		N	≤0.05	YS/T 1467.10-2021
Density (g/cm³)					Hall Flow Rate (s/50g)
Apparent Density		Tapped Density	Testing Standards		Value	Testing Standards
≥6.5		≥7.5	GB/T1479-1984 GB/T 5162-2006		≤10.0	GB/T1482-2010

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