D3 Tool Steel Plate Bar
D3 high-carbon high-chromium tool steel thick flat bar (meeting Note e(i) >10.5% Cr), used for thread rolling dies. Classified HTS 7228.60.10.60 as tool steel bar, distinguished from universal mill plate by use spec.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not tool steel, universal mill plate specs
Note (b) defines universal plate dimensions excluding tool steel use.
If heat-resisting Cr steel
Low C, 4-10.5% Cr heat-resistant steels separate from tool steel.
If clad with other metal
Cladding specifically listed as 'further worked' treatment.
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Import Tips & Compliance
• Thickness >4mm risks universal plate confusion (Note b) - tool steel use prevails
• D-series very rust-prone - no duty allowance per Chapter rust note
• Thickness/width ratio critical for flat bar vs plate HTS boundary
Related Products under HTS 7228.60.10.60
52100 Tool Steel Bar Stock
52100 chrome alloy tool steel bar (1% C, 1.5% Cr) for bearings and instruments, meeting Note (e)(ii). HTS 7228.60.10.60 as other tool steel bars. Common bearing grade but qualifies chemically as tool steel.
Crucible CPM-10V Tool Steel Bar
CPM-10V powder metal tool steel bar with extreme wear resistance for blanking dies. Qualifies tool steel via carbon/chromium per Note (e)(i). HTS 7228.60.10.60 for these advanced PM tool steel configurations.
D2 Tool Steel Flat Bar
A flat bar made from D2 alloy tool steel, containing over 1.2% carbon and more than 10.5% chromium, used for making punches and dies. It falls under HTS 7228.60.10.60 as other bars and rods of tool steel (not high-speed steel) per Chapter 72 note (e). The rectangular cross-section classifies it as a bar rather than a wire or profile.
O1 Tool Steel Round Bar
Round bar of O1 oil-hardening tool steel with 0.85-1.0% carbon and 1-1.8% manganese, ideal for blades and knives. Classified under HTS 7228.60.10.60 as tool steel bars per U.S. Note (e)(iii). Not high-speed steel and in straight lengths.
A2 Air-Hardening Tool Steel Square Bar
Square bar of A2 tool steel (1% Cr, 5% Cr variant meeting Note (e)(ii)), used for shear blades and punches. HTS 7228.60.10.60 covers other tool steel bars not high-speed. Square dimension distinguishes from wire rod.
S7 Shock-Resisting Tool Steel Bar
Rectangular bar of S7 tool steel with high impact toughness for chisels and punches, meeting tool steel definition via molybdenum content. Falls in HTS 7228.60.10.60 as other tool steel bars. Hot-rolled finish without further working.