O1 Tool Steel Hot-Rolled Sheet
O1 oil-hardening tool steel hot-rolled sheet, 2.8 mm thick x 700 mm wide, for gauges and fixtures. HTS 7225.40.51 applies to this flat-rolled tool steel not further worked than hot-rolled, width ≥600 mm, thickness <4.75 mm. Qualifies under tool steel note (e)(iii) with ≥0.85% C and 1-1.8% Mn.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If heat-resisting alloy steel
Heat-resisting steels (<0.3% C, 4-10.5% Cr) have separate provisions even if tool-capable.
If carbon steel not alloy
Insufficient alloy elements drop to high-strength carbon steel flat products.
If in coils
Hot-rolled in coils excluded from 7225.40; moves to coil-specific subheadings.
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Import Tips & Compliance
• Include heat analysis certificate proving tool steel elements per U.S
• Note (e)
• Measure width precisely; products 599 mm wide reclassify to 7226.91 series
• Ensure no cold-rolling occurred, as that would be 'further worked' under Chapter definition
Related Products under HTS 7225.40.51
D2 Tool Steel Hot-Rolled Sheet
Flat-rolled D2 tool steel sheet, hot-rolled, not further worked, 3 mm thick and 800 mm wide, used for making cutting tools and dies. Classified under HTS 7225.40.51 as flat-rolled alloy tool steel of width 600 mm or more, thickness under 4.75 mm, not in coils and not further worked than hot-rolled. Meets U.S. note (e) definition for tool steel with over 1.2% carbon and over 10.5% chromium.
A2 Tool Steel Hot-Rolled Plate
Hot-rolled A2 air-hardening tool steel plate, 3.5 mm thick, 1000 mm wide, for blanking and forming dies. Falls under HTS 7225.40.51 as other alloy tool steel, hot-rolled not in coils, thickness <4.75 mm, width ≥600 mm. Conforms to tool steel definition (e)(ii) with 0.3-1.2% C and 1.25-10.5% Cr.
CPM-M4 Tool Steel Hot-Rolled Sheet
CPM-M4 powder metallurgy tool steel hot-rolled sheet, 2.5 mm thick, 650 mm wide for wear parts. Under HTS 7225.40.51 as tool steel flat-rolled product meeting Chapter 72 tool steel criteria, hot-rolled not further worked.
H13 Hot Work Tool Steel Sheet
H13 chromium-molybdenum hot work tool steel hot-rolled sheet, 4.2 mm thick, 850 mm wide for dies. Classified under 7225.40.51 as qualifying tool steel flat-rolled ≥600 mm wide, <4.75 mm, not further worked than hot-rolled.
S7 Tool Steel Hot-Rolled Plate
S7 shock-resisting tool steel plate, hot-rolled 4 mm thick, 900 mm wide, for impact tools. Classified HTS 7225.40.51: alloy tool steel flat-rolled, ≥600 mm wide, <4.75 mm thick, hot-rolled not further worked, not in coils.
M2 High-Speed Tool Steel Sheet
M2 molybdenum high-speed tool steel hot-rolled sheet, 3.2 mm x 750 mm, for cutting tools. HTS 7225.40.51 for flat-rolled tool steel hot-rolled only, width 600+ mm, thickness <4.75 mm. Meets note (e)(v) ≥0.5% C and ≥3.5% Mo.