Cupola Furnace Coke (100-250 mm)
Premium blast furnace coke adapted for foundry cupolas, featuring pieces larger than 100 mm diameter with superior shatter resistance per ASTM D 3038 (≥50% on 100-mm sieve). Provides high mechanical strength to maintain furnace permeability during gray iron production. Classifies under HTS 2704.00.00.11 for its foundry-specific size and durability specs.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for coke used in blast furnaces rather than foundries
End-use shifts classification from foundry-specific to general metallurgical coke for steel production.
If chemically treated with additives for foundry performance
Chemical preparations or treated foundry materials classify under chemical products rather than pure coke.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Submit detailed particle size distribution and drop shatter test results conducted per ASTM D 3038 standards
• Declare exact moisture content and ash levels, as foundry coke typically requires low impurities for compliance
• Avoid common pitfall of mixing sizes; segregate lots to ensure all material meets the 100-mm retention threshold
Related Products under HTS 2704.00.00.11
Foundry Grade Metallurgical Coke (150-200 mm)
High-quality metallurgical coke produced from coking coal, with maximum diameter exceeding 100 mm and at least 50% retained on a 100-mm sieve after ASTM D 3038 drop shatter testing. Specifically designed for foundry cupola furnaces to provide structural support and consistent carbon supply during iron casting. Meets 2704.00.00.11 criteria due to its size and strength for foundry applications.
Gray Iron Foundry Lump Coke (120-300 mm)
Lump metallurgical coke sized 120-300 mm for gray iron foundries, passing ASTM D 3038 with ≥50% retention on 100-mm sieve after dropshatter. Essential for cupola operations providing carbon and heat in iron melting. Fits HTS 2704.00.00.11 due to precise size and foundry strength requirements.
Premium Foundry Breeze-Free Coke (150 mm+)
Breeze-free metallurgical coke exceeding 150 mm diameter, with exceptional ASTM D 3038 performance (≥50% retained on 100-mm after shatter). Eliminates fines for cleaner foundry cupola operation and reduced dust. Classifies under HTS 2704.00.00.11 for large-size foundry coke standards.
Ductile Iron Cupola Coke (100-200 mm)
Strong metallurgical coke lumps over 100 mm for ductile iron foundries, achieving ≥50% 100-mm sieve retention post ASTM D 3038 testing. Optimized low ash and sulfur for high-quality castings in cupola melting. Precisely matches 2704.00.00.11 for foundry-grade physical specifications.