AISI 52100 Ball-Bearing Steel Hot-Rolled Coil
Hot-rolled bars and rods in irregularly wound coils made from AISI 52100 alloy steel, specifically formulated for ball-bearing production with precise carbon (0.95-1.13%), chromium (1.25-1.65%), and low sulfur/phosphorus content per US note (h). This falls under HTS 7227.90.20.30 as other tool steel of ball-bearing quality, hot-rolled in coils. Ideal for manufacturing high-precision bearing components requiring superior hardness and fatigue resistance.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not qualifying as tool steel
Non-tool alloy steel bars/rods hot-rolled in coils fall under general other alloy steel provisions.
If further worked with polishing or coating
Surface treatments like polishing classify as 'further worked' under Chapter 72 notes, moving to 7228.
If cold-rolled or drawn after hot-rolling
Cold-worked bars/rods of alloy steel shift from hot-rolled coil headings to 7229 series.
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Import Tips & Compliance
• Provide mill test certificates confirming ball-bearing steel composition per US Note (h) to avoid reclassification
• Ensure coils are irregularly wound and hot-rolled; cold-drawn products shift to Chapter 72 headings 7228-7229
• Declare exact alloy analysis to prevent disputes over tool steel vs. other alloy steel categories
Related Products under HTS 7227.90.20.30
SUJ2 Ball-Bearing Alloy Steel Coil
Japanese JIS SUJ2 grade hot-rolled steel coils for bearings, containing 0.95-1.10% carbon, 1.30-1.60% chromium, and minimal impurities as defined in ball-bearing steel US note (h). Classified under HTS 7227.90.20.30 for hot-rolled, irregularly wound coils of other tool steel specifically of ball-bearing quality. Used primarily in automotive and industrial bearing rings.
GCr15 Ball-Bearing Steel Hot-Rolled Rod Coil
Chinese GB/T GCr15 high-carbon chromium bearing steel in hot-rolled coil form, with composition aligned to US ball-bearing steel standards (C:1.00%, Cr:1.45%, low P/S). HTS 7227.90.20.30 covers these irregularly wound hot-rolled tool steel rods specifically for bearing applications. Essential for precision rolling into bearing raceways.
100Cr6 Ball-Bearing Quality Steel Coil
EN 100Cr6 (DIN 1.3505) hot-rolled alloy steel coils for ball bearings, matching US note (h) with C:0.95-1.10%, Cr:1.35-1.60%, Si:0.15-0.35%. Falls precisely under HTS 7227.90.20.30 as other tool steel of ball-bearing type in irregular coils. Widely used in Europe for wind turbine and railway bearings.
52100 Chrome Alloy Hot-Rolled Bearing Steel Coil
ASTM A485 Grade 52100 hot-rolled steel in irregularly wound coils, certified ball-bearing quality with controlled impurities for maximum fatigue life. HTS 7227.90.20.30 applies to these tool steel products distinguished by precise chemistry per US Chapter 72 note (h). Standard for aerospace bearing applications.