Silico-Manganese Spring Steel Wire
Cold-drawn wire of silico-manganese steel designed for manufacturing compression and extension springs in automotive suspensions. Classified under HTS 7229.20.00 due to its specific silico-manganese alloy composition providing high yield strength and fatigue resistance. Available in round and shaped cross-sections for precision spring forming.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If of high-strength steel per note (a)
High-strength steel wire meeting yield point criteria in U.S. Note (a) classified separately from standard silico-manganese wire.
If tool steel composition
Silico-manganese wire meeting tool steel definitions in Note (e) would fall under tool steel provisions.
If manufactured into finished springs
Completed springs or fabricated articles shift to Chapter 73 headings for structures and parts.
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Import Tips & Compliance
• Request supplier certification of minimum silicon (0.15-1.5%) and manganese (0.6-1.65%) content; check for tensile strength specs to validate spring steel grade; declare exact diameter to distinguish from rod products
Related Products under HTS 7229.20.00
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