Also known as: RA#, RA...
RA stands for various terms. Discover the full forms, meanings, and possible interpretations of RA across different fields and industries.
Annealing cold worked metal to produce a new grain structure without phase change.
A furnace atmosphere that tends to remove oxygen from substances or materials placed in the furnace. A chemically active protective atmosphere that at elevated temperature will reduce metal oxides to their metallic state. Reducing atmosphere is a relative term and such an atmosphere may be reducing to one oxide but not to another oxide.
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