CPM-M4 Tool Steel Polished Round Bar
19 mm diameter CPM-M4 powder metallurgy tool steel bar, polished surface for high-performance milling cutters. HTS 7228.50.10.60 for this tool steel (U.S. note (e)(i): >1.2% C, >10.5% Cr equiv) round bar just over 18 mm with polished cold-finish.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If high-speed steel composition
HS steels (specific W/Mo/V alloys) excluded from this tool steel provision per heading.
If other cross-sections or <18 mm max dimension
Adjacent tool steel statistical categories by dimension/shape.
If wound or not further worked than cold-drawn
Drawn wire-like bars of tool steel in Chapter 72 wire headings.
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Import Tips & Compliance
• PM grades need detailed process/material certs; standard D2/M2 certs insufficient for CPM variants
• Minimum dimension tolerance ±0.1mm required for .10.60; oversized tolerance risks 7228.50.30
• No secondary operations like centerless grinding if resembling hot-rolled; strict cold-finish proof
Related Products under HTS 7228.50.10.60
D2 Tool Steel Ground Round Bar
A 20 mm diameter round bar made from D2 alloy tool steel, cold-finished with ground surfaces for precision machining applications. Classified under HTS 7228.50.10.60 as tool steel (meeting U.S. note (e)) bars of round cross-section with maximum dimension over 18 mm and ground surfaces, not further worked beyond cold-finishing. Ideal for dies, punches, and shear blades requiring high wear resistance.
O1 Tool Steel Polished Rectangular Bar
25 mm x 20 mm rectangular section bar of O1 oil-hardening tool steel, polished finish for gauge and fixture manufacturing. Fits HTS 7228.50.10.60 as tool steel bars (U.S. note (e)(iii): ≥0.85% C, 1-1.8% Mn) with rectangular cross-section >18 mm max dimension and polished surfaces from cold-finishing.
A2 Tool Steel Milled Round Bar
22 mm diameter A2 air-hardening tool steel bar with milled surfaces for precision tooling blanks. HTS 7228.50.10.60 applies to this cold-finished tool steel (U.S. note (e)(ii): ≥0.3% C, 1.25-10.5% Cr) round bar over 18 mm with machined surfaces, not further processed.
H13 Tool Steel Milled Rectangular Stock
25 mm x 22 mm H13 hot-work tool steel rectangular bar, milled surfaces for mold and die making. Classified HTS 7228.50.10.60 as qualifying tool steel bar with rectangular section >18 mm and machined finish, cold-formed only.
S7 Tool Steel Ground Flat Bar
30 mm x 15 mm flat rectangular bar of S7 shock-resisting tool steel, ground on all surfaces for die components. Qualifies under HTS 7228.50.10.60 as tool steel (U.S. note (e)) rectangular cross-section bar >18 mm max dimension with ground finish from cold operations.