Ferroniobium Lumps Ultra-Low P/S
Lump-form ferroniobium with maximum 0.01% phosphorus and sulfur, 0.25% silicon, containing 60-70% niobium for electric arc furnace steelmaking. This matches HTS 7202.93.4040 criteria for low-impurity ferroniobium ferroalloys. Used in automotive and aerospace steel alloys.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing significant chromium qualifying as silicoferrochromium
Presence of chromium above specified levels reclassifies under chromium-bearing ferroalloys.
If ferroniobium containing 0.6% or more silicon
Higher silicon content exceeds the <0.4% threshold, moving to silicon-bearing ferroniobium subheading.
If in granular form certified for carbide production
Carbides of metals including niobium fall under Chapter 28 chemicals, not ferroalloys.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include spectrographic or wet chemistry analysis; visual inspection alone insufficient for purity claims
• Store in sealed containers; chapter notes deny allowances for rust/discoloration on steel products
Related Products under HTS 7202.93.40.00
Premium Grade Ferroniobium FeNb65
FeNb65 ferroniobium grade with niobium 65±1.5%, P max 0.018%, S max 0.015%, Si max 0.35%, supplied as 10-60mm lumps. Precisely fits HTS 7202.93.4040 low-impurity ferroniobium specification per chapter definitions. Key additive for weldable structural steels.
High-Purity Ferroniobium 60% Niobium
Ferroniobium alloy containing approximately 60% niobium by weight, with less than 0.02% phosphorus, less than 0.02% sulfur, and less than 0.4% silicon, used primarily in high-strength low-alloy (HSLA) steel production. This product falls under HTS 7202.93.4040 due to its specific low impurity levels in phosphorus, sulfur, and silicon as defined in the chapter notes for ferroniobium classification. It is supplied in lump form for steelmaking furnaces.
Low-Impurity Ferroniobium 65% Nb
Premium ferroniobium with 65% niobium content, strictly controlled to under 0.015% phosphorus, 0.01% sulfur, and 0.3% silicon for specialty steel applications. Classified under HTS 7202.93.4040 for meeting the exact low phosphorus/sulfur/silicon thresholds for ferroniobium. Essential for pipeline and structural steels requiring superior toughness.
HSLA Steel Ferroniobium Additive
Specialty ferroniobium optimized for HSLA steels, <0.01% P/S, 0.2% Si max, 68% Nb content in crushed 3-10mm size. Classified HTS 7202.93.4040 due to compliance with low phosphorus/sulfur/silicon limits for ferroniobium. Enhances strength-to-weight ratio in steel.