Electronic Packaging Al-Si Alloy
High-silicon (25%) aluminum alloy ingots for low-expansion electronic packaging and heat sinks. Meets HTS 7601.20.60.00 unwrought criteria with specified silicon content matching CTE requirements. Alternative to Kovar for hermetic seals.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If standard electronic alloys
Only high-silicon CTE-matched alloys use this subheading.
If wire form ≤6mm
Wire specifically for Chapter 76 articles per subheading note.
If finished insulating fittings
Electrical insulating end-products classified in Chapter 85.
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Import Tips & Compliance
• CTE specification sheets prove alloy purpose; clean ingot surface required for electronics; RoHS compliance documentation mandatory
Related Products under HTS 7601.20.60.00
Al-Si 25 Alloy Ingot
Primary aluminum-silicon alloy ingots containing at least 25% silicon by weight, produced by smelting and casting for remelting. Classified under HTS 7601.20.60.00 as unwrought aluminum alloys with high silicon content exceeding the standard alloy limits. Used primarily in casting applications for automotive and aerospace components.
Silumin Casting Alloy Billets
Cylindrical billets of Al-Si alloy with 25-30% silicon content, designed for remelting in die casting operations. Meets HTS 7601.20.60.00 criteria as unwrought aluminum alloy due to high silicon proportion distinguishing it from standard alloys. Essential for producing complex engine parts and pistons.
High-Silicon Aluminum Notch Bar
Notch-bar form of aluminum alloy containing 27% silicon by weight, suitable only for remelting into castings. Classified as unwrought under 7601.20.60.00 because it retains the characteristics of freshly cast metal with specific high silicon content. Commonly used in gravity die casting for industrial components.
AlSi25 Primary Sow Alloy
Large sow-shaped castings of primary aluminum-silicon alloy with exactly 25% silicon content by weight. HTS 7601.20.60.00 applies as unwrought alloy specifically defined by high silicon proportion over standard limits. Used by secondary smelters for producing wear-resistant castings.
Silicon-Aluminum Foundry Pig
Pig castings of Al-Si master alloy containing 28% silicon for foundry addition to base aluminum melts. Qualifies under 7601.20.60.00 as unwrought high-silicon aluminum alloy in pig form intended solely for remelting. Critical for achieving desired silicon levels in sand castings.
25% Silicon Aluminum Slab
Rectangular slab castings of aluminum alloy with 25% silicon content, maintained in unwrought condition for remelting. HTS 7601.20.60.00 designation reflects the specific high silicon composition distinguishing from other alloy slabs. Applied in continuous casting for piston production.