Cold-Formed Modified 9Cr-1Mo Alloy Steel Rod
Grade 91 modified 9% chromium-1% molybdenum alloy steel rod cold-formed for power plant piping. HTS 7228.60.80.00 for other cold-formed alloy steel rods. Heat-resistant properties for high-temperature service.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If hollow drill rods
If bored for drilling applications, classifies under hollow drill bars provision.
If drawn to tubes
Cold-forming into tubular shapes shifts to seamless steel tubes Chapter 73.
If specific tool steel
Mo/Cr levels may qualify certain grades as tool steel per note (e)(v).
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Import Tips & Compliance
• Grade 91 certs required; verify against heat-resisting steel note (g) thresholds
• Distinguish seamless pipe material from bar stock via end-use documentation
• Cold-formed normalization records prevent hot-rolled misclassification
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