C46400 Naval Brass Slab
C46400 naval brass slab is an unwrought form of copper-zinc-tin alloy with 1% tin maximum, maintaining brass classification. Meets HTS 7403.21.00.00 criteria as zinc predominates over tin (<3%). Ideal for marine hardware and propeller shafts.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If tin content reaches 3% or more
Per subheading note (b), tin-dominant or 3%+ tin alloys become copper-tin base bronzes.
If nickel content 5% or more
Nickel silvers require minimum 5% nickel content per subheading note (c).
If ferro-copper alloy
Ferrous alloys containing copper classified in Chapter 72.
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Import Tips & Compliance
• Tin content verification critical - must be under 3% by weight to remain brass rather than bronze
• Marine-grade certifications may be required for naval brass applications
• Slab dimensions must qualify as unwrought (not semi-finished products)
Related Products under HTS 7403.21.00.00
C26000 Cartridge Brass Ingot
C26000 cartridge brass is a copper-zinc base alloy containing approximately 30% zinc, cast into ingot form for further processing. It falls under HTS 7403.21.00.00 as unwrought brass meeting the definition of copper-zinc base alloys where zinc predominates over other elements. Commonly used for ammunition casings and architectural applications.
C36000 Free-Cutting Brass Billet
C36000 free-cutting brass billet is an unwrought copper-zinc alloy with added lead for machinability, containing 60% copper and 36% zinc. Classified under HTS 7403.21.00.00 as brass since zinc predominates over other elements and lead is permitted. Used primarily for screw machine products and fittings.
C37700 Forging Brass Ingot
C37700 forging brass ingot is unwrought copper-zinc-lead alloy designed for hot forging applications. Classified as brass under HTS 7403.21.00.00 with zinc as predominant alloying element. Used for valves, fittings, and plumbing components.
C69300 Arsenical Brass Billet
C69300 arsenical brass billet contains small amounts of arsenic for improved corrosion resistance in copper-zinc matrix. Remains classified as brass under HTS 7403.21.00.00 since zinc predominates and other elements are minor. Used for condenser tubes.
C35300 High-Leaded Brass Slab
C35300 high-leaded brass slab offers excellent machinability from 2-3% lead in copper-zinc base. HTS 7403.21.00.00 classification confirmed by zinc predominance over lead. Used for precision screw machine parts.
C87200 Silicon Brass Ingot
C87200 silicon brass ingot incorporates 4% silicon into copper-zinc matrix for casting applications. Still qualifies as brass under HTS 7403.21.00.00 with zinc predominant. Used for valve stems and marine castings.