Magnesia Ramming Mix for Steel Ladles
Dry granular magnesia-based material rammed into place to line steel ladles, containing periclase form of magnesia. Falls under HTS 6815.91.00.71 as an other article of specified mineral substances, used in steelmaking for slag resistance. Applied in plastic/ramming form rather than pre-fired shapes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically modified as refractory cement
Refractory cements and mortars with binders move to Chapter 38 as chemical preparations.
If supplied as other refractory goods of siliceous materials
Silica-based refractories classify under Chapter 69 even if mixed with magnesia.
If primarily alumina or aluminosilicate composition
Alumina refractories fall under different 'other' mineral categories.
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Import Tips & Compliance
• Include material safety data sheets confirming periclase content; declare as powder/mix not bricks; watch for valuation issues with imported vs mixed-in-country
Related Products under HTS 6815.91.00.71
Magnesite Crucible for Metal Melting
A high-temperature resistant crucible made primarily from magnesite, used in foundries for melting non-ferrous metals. It falls under HTS 6815.91.00.71 because it contains magnesite as the key mineral substance and is not specified elsewhere in Chapter 68. These crucibles provide excellent thermal shock resistance due to their magnesia content.
Dolomite Refractory Brick for Cement Kilns
Fired bricks composed mainly of dolime (calcined dolomite) designed for lining rotary cement kilns. Classified under HTS 6815.91.00.71 as it contains dolomite and qualifies as an other article of mineral substances, excluding worked monumental stone. Offers superior resistance to alkali attacks in high-temperature environments.
Chromite Sand for Metal Casting Molds
Foundry-grade chromite sand used to create molds for metal casting, valued for high thermal conductivity. HTS 6815.91.00.71 applies as it contains chromite and constitutes an article not elsewhere specified in Chapter 68 exclusions. Processed to uniform grain size for molding applications.
Dolomite Powder for Rubber Filler
Micronized dolomite powder used as reinforcing filler in rubber compounds for tires and belts. Classified HTS 6815.91.00.71 due to dolime content and status as processed mineral article excluded from Chapter 25. Provides cost-effective extension and heat resistance in polymer applications.
Magnesia Ceramic Kiln Furniture Set
Set of magnesia shelves, props, and saggers used to support ceramics during firing in kilns. HTS 6815.91.00.71 because it contains periclase magnesia and functions as mineral articles not excluded by Chapter 68 notes. Withstands repeated high-temperature cycles without contamination.
Periclase Grain for Refractory Guniting
Coarse periclase (magnesia) grains mixed with binders for pneumatic application to repair furnace linings. Falls under HTS 6815.91.00.71 as containing periclase in article form for industrial repair. Enables hot-repair without furnace shutdown.