O1 Tool Steel Polished Rectangular Bar 12x4mm
O1 oil-hardening tool steel bar (0.9% C, 1% Mn, 1% Cr) in 12mm x 4mm rectangular section with polished surfaces for die making. Fits HTS 7228.50.10.20 as tool steel per note (e)(iii) with rectangular cross-section under 18mm max dimension and polished finish.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If further worked beyond grinding/polishing
Additional coatings or cladding would be 'further worked' under Chapter 72 note, moving to different subheading
If angles/shapes rather than simple bar
Angle or structural shapes of tool steel classified under different heading regardless of finish
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Import Tips & Compliance
• Certify O1 composition meets note (e)(iii) requirements (0.85%+ C, 1-1.8% Mn)
• Document polishing process to distinguish from hot-rolled
• Avoid bulk packaging that might trigger set classification
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