AISI 321 Stainless Stabilized Rectangle Billet
Titanium-stabilized AISI 321 stainless steel rectangular billet for high-temperature exhaust manifolds, cross-section <232 cm² with width <4x thickness. Precisely matches HTS 7218.91.0015 for rectangular stainless semi-finished products. No artificial oxidation or metal coating applied.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If flat-rolled rectangular
If considered flat-rolled of width > thickness ratio changes heading.
If tool steel per Note (e)
Specific high-carbon/chromium tool steel alloys classify differently.
If sold as welded pipe set
If bundled with fittings as pipe set for retail, moves to articles of iron/steel.
Not sure which classification is right?
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Import Tips & Compliance
• 1
• Include heat analysis certificate proving stabilization elements for stainless status. 2
• Declare exact measurements—CBP measures independently. 3
• Segregate from further-worked steel to prevent commingling issues
Related Products under HTS 7218.91.00.15
AISI 304L Stainless Steel Rectangle Billet
A semi-finished rectangular billet of AISI 304L low-carbon austenitic stainless steel, with rectangular cross-section where width is less than four times thickness and area under 232 cm², used for hot forging automotive parts. Classified under HTS 7218.91.0015 as other semi-finished stainless steel products of rectangular (not square) cross-section meeting the specified dimensional criteria. Not further worked beyond primary forming.
316 Stainless Steel Hot-Rolled Rectangle Slab
Hot-rolled semi-finished slab of molybdenum-bearing 316 stainless steel in rectangular form, width less than 4x thickness, cross-sectional area <232 cm², ideal for corrosion-resistant marine hardware forging. Fits HTS 7218.91.0015 as primary form stainless steel with precise rectangular dimensions not square. Excludes further surface treatments like coating.
Duplex 2205 Stainless Rectangle Bloom
Duplex 2205 stainless steel bloom in rectangular cross-section (width <4x thickness, area <232 cm²), offering high strength for oil & gas valve components. HTS 7218.91.0015 covers this as other stainless semi-finished product matching exact geometric specs. Primary form without polishing or chemical treatments.
430 Ferritic Stainless Rectangle Semi-Finished Bar
Ferritic 430 stainless steel semi-finished bar stock in rectangular profile (<232 cm² area, width <4x thickness) for appliance trim forging. HTS 7218.91.0015 applies to these precise dimensional stainless primary forms. Excludes burnishing or phosphatizing treatments.
17-4 PH Precipitation Hardening Stainless Rectangle
17-4 PH martensitic precipitation hardening stainless steel rectangular semi-finished product (<232 cm², width <4x thickness) for aerospace fasteners. Classed in HTS 7218.91.0015 as qualifying stainless semi-finished rectangular form. Primary state without varnishing.
310 Austenitic High-Temp Stainless Rectangle Billet
High-temperature 310 austenitic stainless rectangular billet (<232 cm² cross-section, width <4x thickness) for furnace parts. HTS 7218.91.0015 for stainless semi-finished products with these exact rectangular parameters. Not heat-resisting per Note (g).