Chipper Knife Steel Flat Bar
Hot-rolled flat bars made from chipper knife steel, containing 0.48-0.55% carbon, 7.25-8.75% chromium, and 1.25-1.75% molybdenum as per HTS Chapter 72 note (f). Not cold-formed and not further worked beyond hot-rolling. Used primarily for manufacturing wood chipper knives and industrial cutting blades.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If elemental composition doesn't exactly match chipper knife steel specs
Falls under general other alloy steel bars if missing required Cr, Mo, or C ranges from note (f).
If cold-formed after hot-rolling
Cold-formed bars shift to 'other bars and rods, not further worked than cold-formed' heading.
If not qualifying as tool steel per note (e)
Non-tool alloy steel bars go to Chapter 72 heading 7214 for other bars/rods.
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Import Tips & Compliance
• Provide mill test certificate confirming exact elemental composition matches US Note (f) definition for chipper knife steel to avoid reclassification
• Declare as 'not cold-formed' with processing documentation; ensure no further working like polishing or coating
Related Products under HTS 7228.30.40.00
Forestry Chipper Knife Steel Rod
Hot-extruded rods of chipper knife steel optimized for forestry mulching and chipping equipment blades, with vanadium content 0.2-0.55% for wear resistance. Not cold-formed per HTS requirements. Falls under 7228.30.4000 for other alloy tool steel bars.
Heavy Duty Chipper Steel Bright Bar
Hot-rolled bright finish bars of chipper knife steel per note (f), with controlled 0.48-0.55% C for edge retention in heavy-duty chippers. Not cold-formed but may have light scale removal without further working. HTS 7228.30.4000 specific for this tool steel.
Biomass Chipper Steel Bar Stock
Bar stock of chipper knife steel for biomass processing shredders, featuring 7.25-8.75% chromium for corrosion resistance in wet materials. Hot-drawn, not cold-formed, straight lengths. Precisely matches HTS 7228.30.4000 tool steel criteria.
Recycling Chipper Knife Steel Rod
Hot-rolled rods of chipper knife steel for tire/metal recycling chippers, with molybdenum 1.25-1.75% for toughness. Not cold-formed, supplied decaled but not polished. HTS 7228.30.4000 for chipper knife tool steel bars/rods.
Mulcher Chipper Steel Flat Stock
Flat stock bars of certified chipper knife steel for mulcher flail knives, silicon 0.75-1.05% for deoxidation. Hot-rolled only, not cold-formed per HTS. Specific 7228.30.4000 classification for this alloy tool steel.
Chipper Knife Steel Round Rod
Hot-rolled round rods of chipper knife steel per US Note (f), with precise alloy content including 0.75-1.05% silicon and up to 1.75% tungsten. Delivered not cold-formed for machining into heavy-duty chipper blades. Meets HTS 7228.30.4000 for tool steel bars not further worked.