52100 Chrome Alloy Steel Hexagonal Bar
Hexagonal profile bar produced from 52100 ball-bearing steel meeting Chapter 72 note (h) specifications for bearing manufacturing, with precise low impurity levels and chromium content. Classified under HTS 7228.60.10.30 as other bars/rods of tool steel of ball-bearing composition, not high-speed steel. Typically used for bearing races and rolling elements.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If alloy content doesn't qualify as tool steel
Other alloy steel bars not meeting tool steel or ball-bearing definitions go to 7228.30.80 other categories
If made of heat-resisting steel per note (g)
Heat-resisting alloy steel (low C, 4-10.5% Cr) classifies separately from ball-bearing tool steel
If supplied in coil form
Other bars/rods in coils fall under 7215, while straight lengths classify as 7228
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Import Tips & Compliance
• Certify exact chemistry matching ball-bearing steel definition to prevent downgrade to 7228.30; ensure no further working beyond permitted surface treatments per Chapter note; check for Section 232 steel tariffs applicability
Related Products under HTS 7228.60.10.30
AISI 52100 Ball-Bearing Steel Round Bar
A precision-ground round bar made from AISI 52100 alloy steel, specifically formulated for ball-bearing applications with controlled carbon (0.95-1.13%), chromium (1.25-1.65%), and low sulfur/phosphorus levels as defined in HTS Chapter 72 note (h). This falls under HTS 7228.60.10.30 as other bars and rods of tool steel (not high-speed) of ball-bearing steel. It is hot-rolled or forged into bar form without further working beyond basic surface treatments.
GCr15 Ball-Bearing Steel Square Bar
Square cross-section bar of GCr15 (Chinese equivalent to 52100) ball-bearing steel with composition certified to Chapter 72 note (h): 0.95-1.13% C, 1.25-1.65% Cr, minimal S/P. HTS 7228.60.10.30 covers these tool steel bars specifically for bearing production, distinguished from general alloy steel.
SUJ2 Japanese Ball-Bearing Steel Flat Bar
Flat bar stock of SUJ2 high-carbon chrome bearing steel equivalent to AISI 52100, meeting all Chapter 72 note (h) criteria for ball-bearing tool steel. Under HTS 7228.60.10.30 as other bars/rods (not angles/shapes) of this specific grade, used in precision bearing components.
100Cr6 Ball-Bearing Steel Rod
Drawn or ground rod of 100Cr6 (DIN equivalent 52100) ball-bearing steel precisely matching Chapter 72 note (h) composition for superior fatigue resistance in bearings. HTS 7228.60.10.30 applies to these other bars/rods of tool steel, excluding high-speed grades and hollow drill rods.