High-Phosphorus Foundry Pig Iron
Pig iron cast in standard pig shapes with phosphorus content exceeding 0.5% by weight, primarily used in foundries for gray iron castings. It falls under HTS 7201.20.00.00 as nonalloy pig iron in primary forms with elevated phosphorus levels, distinguishing it from low-phosphorus variants. This composition enhances fluidity for complex castings like engine blocks.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phosphorus ≤0.5%
Low-phosphorus nonalloy pig iron shifts to the other nonalloy subheading in 7201.10.
If alloyed with >0.3% chromium or other elements
Alloy pig iron per Chapter 72 note definitions moves to spiegeleisen or alloy subheadings.
If ferro-phosphorus rather than pig iron
Ferrosilicon-phosphorus alloys are classified under ferroalloys in heading 7202.
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Import Tips & Compliance
• Obtain chemical analysis certificates verifying phosphorus >0.5% and nonalloy status to avoid reclassification to 7201.10
• Ensure pigs are in primary forms without further working like machining, per Chapter 72 notes
• Declare exact weight and composition; common pitfall is rust discoloration affecting duty allowances
Related Products under HTS 7201.20.00.00
Phosphoric Pig Iron for Ductile Iron Production
Nonalloy pig iron blocks with over 0.5% phosphorus, serving as a base charge in ductile iron manufacturing. Classified under HTS 7201.20.00.00 due to its primary form and high phosphorus content, which aids in nodulizing processes. Ideal for producing spheroidal graphite iron castings.
Basic Pig Iron for Steel Mill Charges
Nonalloy pig iron pigs containing more than 0.5% phosphorus, used as a blast furnace charge in basic oxygen steelmaking. Falls under HTS 7201.20.00.00 for its primary form and compositional specs per Chapter 72 notes. Provides carbon and phosphorus for steel refining.
Gray Iron Pig Iron High Phosphorus Grade
Pig iron in pig form with phosphorus over 0.5% by weight, optimized for gray iron foundry applications. Classified in HTS 7201.20.00.00 as nonalloy pig iron in primary blocks or pigs, leveraging high phosphorus for improved castability. Common in manhole covers and machinery bases.
Industrial High-Phosphorus Pig Iron Blocks
Large blocks of nonalloy pig iron containing more than 0.5% phosphorus, for industrial melting operations. Under HTS 7201.20.00.00 as primary forms without further working, per chapter notes on surface treatments. Suited for heavy castings in construction equipment.
White Pig Iron with High Phosphorus Content
High-phosphorus (>0.5%) nonalloy pig iron designed for white cast iron production, cast in pig or block forms. HTS 7201.20.00.00 applies as it meets the nonalloy primary form criteria with excess phosphorus for hardness in castings. Used in applications requiring wear resistance.
Phosphorus-Rich Nonalloy Spiegeleisen Pigs
Primary form pigs of nonalloy pig iron with >0.5% phosphorus, sometimes called high-P spiegeleisen substitute. HTS 7201.20.00.00 covers this as it lacks alloy elements per notes, used in remelting for specialty irons. Enhances deoxidation in foundries.