P91 Grade T91 Chromium-Moly Alloy Steel Plate
ASME SA387 Grade P91 (T91) 9Cr-1Mo-V alloy steel plate over 600 mm for power plant piping/superheaters. 7225.99.0090 as other hot-rolled alloy steel flat-rolled product. High chromium (8-9.5%) but not stainless per Chapter notes.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-rolled variant
Cold-rolling moves entire P91 family to 7225.40 section.
If meets stainless definition
9% Cr with low C might qualify as heat-resisting stainless per note (g).
Not sure which classification is right?
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Import Tips & Compliance
• ,Vanadium content documentation often required for P91 certification
• Power plant end-use certificates may trigger special documentation
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