Wire in this heading is unworked drawn wire. Once it is stranded, twisted into rope or cable, coated for a specific end use, or incorporated into a woven mesh or fabric, it typically moves to a different chapter covering wire rope, wire cloth, or the relevant finished article.

No — the single subheading 722300 covers all stainless steel wire regardless of alloy series. Grade matters commercially for pricing and specification compliance, but the HTS does not subdivide by 300-series versus 400-series at the 10-digit level within this heading.