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HTS 3810Pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods

Product or HTS code

Rate lines4

Code	Description	General	Special	Column 2	Units	Calculate
3810.10.00.00	3810.10.00.00Pickling preparations for metal surfaces; soldering, brazing or welding powders and pastes consisting of metal and other materialsGeneral 5% · Special Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) · Column 2 25% · kg	5%	Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)	25%	kg
3810.90	3810.90Other
3810.90.10.00	3810.90.10.00Containing 5 percent or more by weight of one or more aromatic or modified aromatic substancesGeneral 6.5% · Special Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) · Column 2 3.7¢/kg + 60% · kg	6.5%	Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)	3.7¢/kg + 60%	kg
3810.90.20.00	3810.90.20.00Consisting wholly of inorganic substancesGeneral Free · Column 2 25% · kg	Free		25%	kg
3810.90.50.00	3810.90.50.00OtherGeneral 5% · Special Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) · Column 2 25% · kg	5%	Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)	25%	kg

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Mexico30.5% of imports	Japan19.08% of imports	Germany12.52% of imports	Canada8.04% of imports	South Korea7.66% of imports	France2.99% of imports	China2.7% of imports	Taiwan1.95% of imports	Vietnam1.5% of imports	Spain1.47% of imports
3810.10.00.00Pickling preparations for metal surfaces; soldering, brazing or welding powders and pastes consisting of metal and other materials	From 15%9903.05.55Depends on product facts	From 12.5%9903.05.49Depends on product facts	From 10%9903.05.39Depends on product facts	From 15%9903.05.29Depends on product facts	From 12.5%9903.05.71Depends on product facts	From 10%9903.05.39Depends on product facts	From 42.5%9903.05.319903.88.03Depends on product facts	From 10%9903.05.76Depends on product facts	From 17.5%9903.05.84Depends on product facts	From 10%9903.05.39Depends on product facts
3810.90.10.00Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances	16.5%9903.05.55	12.5%9903.05.49	10%9903.05.39	16.5%9903.05.29	12.5%9903.05.71	10%9903.05.39	44%9903.05.319903.88.03	10%9903.05.76	19%9903.05.84	10%9903.05.39
3810.90.20.00Consisting wholly of inorganic substances	10%9903.05.55	12.5%9903.05.49	10%9903.05.39	10%9903.05.29	12.5%9903.05.71	10%9903.05.39	37.5%9903.05.319903.88.03	10%9903.05.76	12.5%9903.05.84	10%9903.05.39
3810.90.50.00Other	15%9903.05.55	12.5%9903.05.49	10%9903.05.39	15%9903.05.29	12.5%9903.05.71	10%9903.05.39	42.5%9903.05.319903.88.03	10%9903.05.76	17.5%9903.05.84	10%9903.05.39

Total duty on a $10,000 ocean shipment entered 2026-10-13, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).