Dry Bulk Solids: grain
Flow and physical properties of dry bulk solids for hopper, bin, silo, chute, and conveyor design. Covers grains, aggregates, chemicals, plastics pellets, and biomass. Properties include bulk density (loose/packed), angle of repose, angle of internal friction, Jenike flow factor (ff), Hausner ratio, Carr compressibility index, cohesion class, and moisture sensitivity. Per Jenike Storage and Flow of Solids Bulletin 123, Schulze Powders and Bulk Solids, and CEMA Belt Conveyors.
| material category | material name | angle of internal friction deg (degrees) | angle of repose deg (degrees) | bulk density loose kg m3 (kg/m3) | bulk density packed kg m3 (kg/m3) | carr compressibility index (%) | cohesion class | hausner ratio (dimensionless) | jenike flow factor ff (dimensionless) | moisture sensitivity | notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| grain | barley | 31 | 28 | 620 | 720 | 16 | free_flowing | 1.16 | 4 | low | Six-row and two-row barley at ~12% MC; hull roughness increases friction vs corn/wheat |
| grain | corn_shelled | 30 | 27 | 720 | 800 | 11 | free_flowing | 1.11 | 4.5 | low | Shelled yellow dent corn at ~15% moisture; typical US No.2 grade; ff well above 4 indicating easy flow |
| grain | malt_barley | 33 | 30 | 560 | 640 | 12 | free_flowing | 1.14 | 3.8 | low | Malting barley after kiln drying; similar to raw barley but slightly lower moisture and bulk density |
This is a sample. Search the full dry bulk solids dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE