M50 Alloy Steel Seamless Bearing Tube
Seamless tube from M50 high-speed alloy steel (AMS 6491), designed for aerospace ball bearing races requiring extreme hardness and fatigue resistance. Circular cross-section with precise ID/OD for finish machining. 7304.59.10.00 applies to its seamless alloy construction for bearing manufacture.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-drawn and not hot-finished
Cold-formed finishing changes subheading within seamless iron/steel tubes.
If supplied as semi-finished hollow bar
Thicker-walled 'hollow bars' for machining classify as Chapter 72 alloy products.
If for general mechanical tubing applications
Without bearing end-use proof, defaults to other alloy steel tubes.
Not sure which classification is right?
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Import Tips & Compliance
• Require vacuum induction melted (VIM) or VAR certifications for aerospace-grade purity
• Specify 'hollow profiles for bearings' in commercial invoices to match HTS note
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