Beryllium Copper Diaphragm Strip
High-formability beryllium copper strip for pressure diaphragms in instrumentation and aerospace sensors. Classified in HTS 7409.90.90.30 as beryllium copper alloy with thickness >0.15 mm to <5 mm and width <500 mm. Excels in fatigue strength for cyclic loading.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phosphor bronze composition
Copper-tin bronzes classify under 7409.90.90.10, differentiated by alloy base per notes.
If further worked (e.g., stamped blanks)
Stamped or embossed strip becomes 'other worked copper articles' in 7410.21.
If supplied as finished diaphragm for instruments
Complete diaphragms for measuring instruments fall under Chapter 90.
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Import Tips & Compliance
• Submit material safety data for beryllium handling; OSHA/EPA declarations often required
• Confirm flatness specs in documentation; warped strip risks rejection at thickness gauge
• Use ISPM-15 compliant packaging for coils to avoid fumigation delays
Related Products under HTS 7409.90.90.30
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