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NMFC 136240 - Silicon Metal in Boxes | Class 50

Article ID
136240
Item 136240: Silicon metal in boxes
Freight Group
METALS GROUP
Metals Group classification for silicon shipments
Class Range
50 1 classification
Class 50, density not required
Hazardous
No
Non-hazardous; no hazmat paperwork needed

Classification Details

NMFC Description Class
136240.00 Silicon (metal containing not less than 96 percent nor more than 99 percent of silica), in bags, boxes or drums 50

How to Determine Your Class

To find the correct freight class for your shipment:

  1. Book under fixed Class 50 and cite NMFC 136240 on the BOL, describing the commodity as silicon metal (96–99% purity) packed in boxes.
  2. Palletize heavy boxes with slip sheets, banding, and stretch wrap; line cartons with poly to contain fines and mark pallets “Keep Dry.”
  3. Note product form (lump or granular) and list pallet weight and dimensions even though class isn’t density-based; e.g., 2,000 lb on a 40×48 pallet.
  4. Request dry van service and avoid co-loading near acids or oxidizers; no hazmat declaration is needed for this non-hazardous metal.

Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.

Business Value

  • Fixed Class 50 reduces rate variability and rebills, improving cost predictability for recurring silicon metal moves.
  • Non-hazardous status eliminates hazmat fees and expands carrier options, streamlining tendering and scheduling.
  • Boxed packaging matches standard LTL handling, lowering damage risk versus loose bags and helping keep claims down.
  • Clear NMFC mapping accelerates quoting and audits, shortening order-to-cash cycles and improving margin visibility.