NMFC 50220 - Hot-Top Steel Pouring Compounds | Class 50

Note 50222: NOTE-Applies only on compounds to be applied to the working face of the hot top brick shapes as protective coating or as a parting material to facilitate the stripping of hot tops.

To find the correct freight class for your shipment:

1. List NMFC 50220 and reference Note, item 50222 on the BOL; include exact package counts and true weights since the rating is weight-governed, not density-based.
2. Protect from moisture. Use poly-lined boxes or crates, or palletized bags with a top sheet and stretch wrap; mark “Keep Dry” to prevent clumping and contamination.
3. Stabilize heavy units: brick-stack 50 lb bags, band drums, or strap crates to 4-way entry pallets with no overhang; add corner boards to resist side crush.
4. Prevent leakage of fines by lining boxes/crates and taping seams; if using drums, ensure tight lids and ring clamps. Example: 40 bags per pallet, 2,000 lb, Class 50.

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

• Low Class 50 yields competitive LTL rates on dense mineral compounds used by foundries and steel mills.
• Weight-based classification removes density calculations, cutting reclass risk and invoice disputes.
• Flexible packaging—bags, boxes, crates, or drums—streamlines sourcing and standardizes plant-to-plant shipments.
• Non-hazardous status expands carrier options and minimizes documentation, accelerating dock-to-dock throughput.