Hf


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

Hf,

symbol for the element hafniumhafnium
, metallic chemical element; symbol Hf; at. no. 72; at. wt. 178.49; m.p. about 2,227°C;; b.p. 4,602°C;; sp. gr. 13.31 at 20°C;; valence +4. Hafnium is a lustrous, ductile, silvery metal with a hexagonal, close-packed crystalline structure.
..... Click the link for more information.
.

Hf

(chemistry)

HF

(communications)

HF

On drawings, abbr. for “hot finished.”

HF

(High Frequency) A range of radio frequencies from 3 to 30 MHz. The HF band is used for amateur radio, marine, aviation and military communications and high-frequency RFID tags.

With regard to audio, high-frequency waves are typically above 3,000 Hz. See frequency bands.