Material Density Guide

This guide lists common minerals, production by-products, ingredients and their corresponding bulk density. Note that the listed bulk density is nominal and should not be considered exact for your application. Material density can change when in storage, or in high moisture environments.

MaterialBulk Density (lb/ft3)
Alumina50-65
Aluminum (Hydrate)18
Aluminum (Ore)75-85
Aluminum (Oxide)67-120
Apatite Phosphate75-80
Ash Dry (Coal)35-40
Ash Wet (Coal)45-50
Barley38
Bauxite68
Bauxite (Mine Run)80-90
Blast Furn (Dust)85-105
Borax (Fine)53
Buck Wheat40-42
Cal Carbonate (Limestone)56-69
Calcium (Nitrate)75
Cal Oxide (Burnt Lime)68-82
Carbon Black (Pellets)12-44
Cement (Finished)69-94
Cement (Raw Meal)31-56
China Clay (Kaolin)31-94
Clay (Calcined)62-82
Clinker (2″ Minus-Dust)75
Coal (Anthracite)55-60
Coal (Brown Culm)37-50
Coal (Bituminous)45-50
Coal (Lignite)40-45
Coal (Dust/Pulverized)25-50
Coffee Beans (Green)36-44
Coffee Beans (Roasted)22
Coke Breeze25-35
Coke Dry23-35
Coke Calcined (Petroleum)35-45
Compost28-30
Copper Ore120-150
Copper (Sulphates)50-75
Copra (Whole/Broken)28-31
Copra (Meal)22
Corn45
Cotton (Lint 12%)16
Cotton (Lint 4%)22
Cotton (Dehulled)28
Electrostatic (Precip Dust)6-82
Extractor (Cake & Meals)19-31
Ferric Oxide (Iron Oxide)50-69
Fly Ash (Flue Dust)19-50
Foundry Sand (Flue Dust)62-90
Grains (Whole)45-50
Gypsum (Pulverized)44-75
Hops (Spent Dry)35
Iron Ore62-106
Iron Ore (Ground)135-150
Iron Pyrite (Residue)75-87
Lime Hydrate31-56; 135-150
Limestone (Crushed)85-90
Litharge75-94
Litharge (Lead Oxide)200-250
Linseed (Flax)37-45
Malt (Dry)34-37
Magnesium (Chloride)33
Magnesium (Oxide)25-31
Millet42-47
Nickel (Sulphates)50-75
Nickel (Calcine)75-82
Nickel (Pyrite)144-206
Phosphate Rock69-82
Phosphate Rock (Coarse)62-106
Phosphate Rock (Fine)62-106
Potassium (Chloride)56-69
Potassium (Sulphate)69-75
Pyrite Ash75-87
Potash (Dry)56-69
Potash (Muriated)56-75
Quartz Sand (Silica Sand)82-100
Rapeseed (Canola)37
Safflower37
Salt44-100
Salt Cake6-8
Saw Dust6-12
Sinter Dust75
Slag (Dry)31-62
Slag (Wet)62
Soda Ash (Dense)56-62
Soda Ash (Light)31-44
Sodium Sulphate)69-106
Sorghum42-47
Soya Beans (Not Cleaned)45
Soya Beans (Cleaned)45
Soya Beans (Hulled)8
Soya Flakes17
Soya Meal28
Sugar Raw50-56
Sulpher (Dry)62-75
Sunflower (Seed Whole)25
Sunflower (Seed Hulled)17-28
Sunflower (Hulls)6
Thomas Slag82-112
Urea37-47
Wheat45-49
Woodchips (Sized)13-25
Wood Pellets (1/4-3/8” x 2” Lg)30-40
Wood Slivers (Sized)3-10
Zinc (Calcined)110-150
Zinc (Oxide)10-35