1.0mm Heat-Treated Valve Spring Quality Wire
Precisely 1.0 mm heat-treated high-carbon wire (0.68% C) for engine valve springs, non-plated and polished. Classed in HTS 7217.10.80.30 for round wire traits, carbon level, heat treatment, and minimum diameter threshold. High fatigue strength for automotive engines.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If concrete reinforcing type per note (c)
Deformed/ribbed rods for concrete shift to specific reinforcing category.
If coated with nonmetallic like enamel
Nonmetallic coatings constitute 'further worked' moving to 7217.30 per Chapter note.
If imported as complete engine valve springs
Assembled parts for engines classified under Chapter 84 machinery parts.
Not sure which classification is right?
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Import Tips & Compliance
• Exact 1.0 mm qualifies as '1.0 mm or more'; retain caliper measurements from multiple coil points
• Distinguish heat treatment from mere cold-drawing via microstructure reports if audited
• Label coils clearly with HTS specs to speed customs processing
Related Products under HTS 7217.10.80.30
1.2mm Heat-Treated High-Carbon Spring Wire
Round wire of nonalloy steel with 0.6% or more carbon content, heat-treated for enhanced tensile strength, and sized at 1.2 mm diameter. Classified under HTS 7217.10.80.30 due to its specific diameter range (1.0-1.5 mm), high carbon composition, and heat treatment without plating or coating. Used primarily in manufacturing coil springs for automotive suspensions.
1.4mm Heat-Treated C67S Piano Wire
High-carbon steel wire (C67S grade, ~0.65% carbon) heat-treated via patenting process for musical instrument strings, diameter 1.4 mm. Fits HTS 7217.10.80.30 as round, non-plated, heat-treated wire with ≥0.6% carbon in the 1.0-1.5 mm range. Essential for piano and guitar high-tension strings requiring precise elasticity.
1.1mm Heat-Treated Music Wire ASTM A228
ASTM A228 music wire, cold-drawn and heat-stabilized with ≥0.6% carbon, 1.1 mm diameter for precision springs. Under HTS 7217.10.80.30 for its round cross-section, high carbon, heat treatment, and exact diameter specs without plating. Ideal for small instrument valves and medical devices.
1.3mm Heat-Treated Oil-Tempered MB Wire
Oil-tempered high-carbon wire (0.7% carbon) with 1.3 mm diameter for mechanical belt springs, heat-treated for fatigue resistance. Matches HTS 7217.10.80.30: nonalloy, round, ≥0.6% C, heat-treated, 1.0-1.5 mm, not plated. Used in conveyor and automotive belt systems.
1.25mm Heat-Treated Hard Drawn Lock Wire
Hard-drawn, heat-treated nonalloy steel wire (0.62% carbon) at 1.25 mm for aircraft safety wire locking. HTS 7217.10.80.30 applies to its round shape, high carbon, heat treatment, uncoated status, and precise diameter. Critical for aerospace fastener security.