Hafnium Crystal Bar

Hafnium crystal bar is a rod-shaped metallic feedstock for subsequent melting, alloying or component manufacture. Review the combined Hafnium+Zirconium assay and the separate zirconium limit shown below when selecting the material.

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Product Parameters / Technical Specifications

Specification

Appearance: Rod-shaped

Diameter: 20-45 mm

Purity

Hf+Zr ≥ 99.95%, Zr < 0.2% / 0.5% / 1% / 3%

Trace Element Analysis

Trace Element Limits (ppm max)
Nb	Mo	Cr	Al	Ti	Mn	Ni	Cu
≤ 5 ppm	≤ 5 ppm	≤ 10 ppm	≤ 5 ppm	≤ 10 ppm	≤ 1 ppm	≤ 20 ppm	≤ 1 ppm
Sn	Sb	W	Pb	Bi	Mg	P	Si
≤ 1 ppm	≤ 1 ppm	≤ 5 ppm	≤ 1 ppm	≤ 1 ppm	≤ 5 ppm	≤ 5 ppm	≤ 10 ppm
S	Fe	N	C	H	O
≤ 5 ppm	≤ 100 ppm	≤ 50 ppm	≤ 50 ppm	≤ 20 ppm	≤ 100 ppm

Material Selection

Confirm which zirconium limit is required rather than treating all listed purity options as the same grade.
Match the bar diameter and documented chemistry to the downstream process; raw bar is not a finished plasma electrode or control component.

Applications

Nuclear components
Aerospace materials