HY-80 High-Yield Submarine Hull Steel Plate
> HY-80 is a nickel-chromium-molybdenum alloy steel plate (width 800 mm) used for naval submarine hull construction, with a yield strength of 80 ksi. It is a high-strength alloy steel that does not meet the definitions for stainless or other specialty steels, so it falls under "other alloy steel" flat-rolled products.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If hot-rolled and not in coils
Hot-rolled alloy steel plates are classified under a specific tariff item.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• > Ensure the plate is flat-rolled and over 600 mm wide
• Provide a mill test report to verify the alloy composition and yield strength
• If the plate is for military or naval use, check for any special import permits required by Canadian authorities
Related Products under Tariff item 7225.99.00
15CrMo Alloy Steel Pressure Vessel Sheet
> 15CrMo is a low-alloy steel containing chromium and molybdenum, supplied as flat-rolled sheet or plate over 600 mm wide. It is used in boilers and pressure vessels operating at elevated temperatures. It qualifies as "other alloy steel" because it does not meet the definitions for stainless, silicon-electrical, or high-speed steel.
A204 Grade C Molybdenum Alloy Steel Plate
> A204 Grade C is a molybdenum alloy steel plate for pressure vessels, with a width of 700 mm and thickness of 40 mm. It contains about 0.5% molybdenum, making it an alloy steel. It does not meet the definitions for stainless or other specialty steels, so it falls under "other alloy steel" flat-rolled products.
A302 Grade A Manganese-Molybdenum Alloy Steel Plate
> A302 Grade A is a manganese-molybdenum alloy steel plate over 600 mm wide, normalized for pressure vessel applications. It contains molybdenum (0.45-0.65%) and manganese, making it an alloy steel. It does not match specialty steel definitions, so it is classified as "other alloy steel" flat-rolled products.
A353 Grade Ni-Ni Alloy Steel Plate for Low-Temperature Service
> A353 is a 9% nickel alloy steel plate over 600 mm wide, used for cryogenic applications like LNG tanks. The high nickel content makes it an alloy steel, but it does not meet the definition of stainless steel (chromium <10.5%). It is classified as "other alloy steel" flat-rolled products.
A387 Grade 11 Heat-Resistant Alloy Steel Plate
> A387 Grade 11 is a chromium-molybdenum alloy steel plate over 600 mm wide, used in elevated-temperature service in refineries. It contains 1-1.5% chromium and molybdenum, making it an alloy steel. It does not meet the stainless steel definition (chromium <10.5%), so it falls under "other alloy steel" flat-rolled products.
A514 Grade B High-Yield Strength Alloy Steel Plate
> A514 Grade B is a quenched and tempered alloy steel plate over 600 mm wide, used for structural applications requiring high strength-to-weight ratio. It contains multiple alloying elements like chromium, molybdenum, and boron, making it an alloy steel. It does not match specialty steel definitions, so it is classified as "other alloy steel" flat-rolled products.