HTS Heading 8406

Steam turbines and other vapor turbines, and parts thereof

All 19 HTS codes under heading 8406 (steam turbines and other vapor turbines), with their duty rates from the 2026 HTS Revision 23. General duty Free to 6.7%.

Every line of heading 8406

  • 8406 Steam turbines and other vapor turbines, and parts thereof.
  • 8406.10 Turbines for marine propulsion.
  • 8406.10.10.00 Steam turbines (under: Turbines for marine propulsion) (No.): General 6.7%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 20%.
  • 8406.10.90.00 Other (under: Turbines for marine propulsion) (No.): General Free; Special none; Column 2 27.5%.
  • 8406.81 Of an output exceeding 40 MW (under: Other turbines).
  • 8406.81.10 Steam turbines (under: Of an output exceeding 40 MW): General 6.7%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) 3.35% (JP); Column 2 20%.
  • 8406.81.10.20 Stationary steam turbines, condensing type (No.).
  • 8406.81.10.70 Other (under: Steam turbines) (No.).
  • 8406.81.90.00 Other (under: Of an output exceeding 40 MW) (No.): General Free; Special none; Column 2 27.5%.
  • 8406.82 Of an output not exceeding 40 MW.
  • 8406.82.10 Steam turbines (under: Of an output not exceeding 40 MW): General 6.7%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 20%.
  • 8406.82.10.10 Not exceeding 7,460 kW (under: Stationary steam turbines, condensing type) (No.).
  • 8406.82.10.20 Exceeding 7,460 kW (under: Stationary steam turbines, condensing type) (No.).
  • 8406.82.10.50 Not exceeding 7,460 kW (under: Other) (No.).
  • 8406.82.10.70 Exceeding 7,460 kW (under: Other) (No.).
  • 8406.82.90.00 Other (under: Of an output not exceeding 40 MW) (No.): General Free; Special none; Column 2 27.5%.
  • 8406.90 Parts (under: Steam turbines and other vapor turbines, and parts thereof).
  • 8406.90.20.00 Rotors, finished for final assembly (No.): General 5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 20%.
  • 8406.90.30.00 Rotors, not further advanced than cleaned or machined for removal of fins, gates, sprues, and risers, or to permit location in finishing machinery (No.): General 5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG); Column 2 20%.
  • 8406.90.40.00 Blades, rotating or stationary (No.): General 5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG); Column 2 20%.
  • 8406.90.45 Other (under: Of steam turbines): General 5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG); Column 2 20%.
  • 8406.90.45.40 Rotors or spindles and rotor or spindle assemblies (No.).
  • 8406.90.45.80 Other (under: Other) (kg).
  • 8406.90.50.00 Rotors, finished for final assembly (No.): General Free; Special none; Column 2 27.5%.
  • 8406.90.60.00 Rotors, not further advanced than cleaned or machined for removal of fins, gates, sprues, and risers, or to permit location in finishing machinery (No.): General Free; Special none; Column 2 27.5%.
  • 8406.90.70.00 Blades, rotating or stationary (No.): General Free; Special none; Column 2 27.5%.
  • 8406.90.75.00 Other (under: Other) (kg): General Free; Special none; Column 2 27.5%.

From MFG Calcs data: Turbines and fluid-power drives

U.S. imports of turbines and fluid-power drives (headings 8406, 8410, 8411, 8412) came to $40.82B in 2025, with $2.13B in calculated duty: an effective duty of 5.2%, every duty included.

Effective duty in Sep 2026: 3.4%, against 7.5% in Sep 2025.

Largest sources in 2025: Canada $7.52B at 1.7% effective duty; France $6.03B at 2.6% effective duty; United Kingdom $4.50B at 1.7% effective duty; Mexico $3.98B at 2.8% effective duty; Germany $3.47B at 4.5% effective duty.

These are family totals from U.S. import statistics published through USITC DataWeb, not this heading's rate alone; effective duty is calculated duty as a share of customs value, an estimate, not a ruling.

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.

Last reviewed 2026-11-12.