Spring Steel Music Wire 0.3mm
High tensile spring steel music wire 0.3 mm round for precision clock springs. Under HTS 7229.90.5016 other alloy round wire <1 mm. High-carbon with Mn/Si alloying.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If plain carbon steel without alloy elements
Non-alloy high-carbon wire under 7217; alloy elements trigger Chapter 72 alloy headings.
If assembled into watch movements
Component of timepieces classifies under Chapter 91.
Not sure which classification is right?
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Import Tips & Compliance
• Tensile strength certification critical for spring classification
• Coil packaging common; declare uncoiled weight equivalent
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