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.

Material Bulk Density (lb/ft3)
Alumina 50-65
Aluminum (Hydrate) 18
Aluminum (Ore) 75-85
Aluminum (Oxide) 67-120
Apatite Phosphate 75-80
Ash Dry (Coal) 35-40
Ash Wet (Coal) 45-50
Barley 38
Bauxite 68
Bauxite (Mine Run) 80-90
Blast Furn (Dust) 85-105
Borax (Fine) 53
Buck Wheat 40-42
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 Breeze 25-35
Coke Dry 23-35
Coke Calcined (Petroleum) 35-45
Compost 28-30
Copper Ore 120-150
Copper (Sulphates) 50-75
Copra (Whole/Broken) 28-31
Copra (Meal) 22
Corn 45
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 Ore 62-106
Iron Ore (Ground) 135-150
Iron Pyrite (Residue) 75-87
Lime Hydrate 31-56; 135-150
Limestone (Crushed) 85-90
Litharge 75-94
Litharge (Lead Oxide) 200-250
Linseed (Flax) 37-45
Malt (Dry) 34-37
Magnesium (Chloride) 33
Magnesium (Oxide) 25-31
Millet 42-47
Nickel (Sulphates) 50-75
Nickel (Calcine) 75-82
Nickel (Pyrite) 144-206
Phosphate Rock 69-82
Phosphate Rock (Coarse) 62-106
Phosphate Rock (Fine) 62-106
Potassium (Chloride) 56-69
Potassium (Sulphate) 69-75
Pyrite Ash 75-87
Potash (Dry) 56-69
Potash (Muriated) 56-75
Quartz Sand (Silica Sand) 82-100
Rapeseed (Canola) 37
Safflower 37
Salt 44-100
Salt Cake 6-8
Saw Dust 6-12
Sinter Dust 75
Slag (Dry) 31-62
Slag (Wet) 62
Soda Ash (Dense) 56-62
Soda Ash (Light) 31-44
Sodium Sulphate) 69-106
Sorghum 42-47
Soya Beans (Not Cleaned) 45
Soya Beans (Cleaned) 45
Soya Beans (Hulled) 8
Soya Flakes 17
Soya Meal 28
Sugar Raw 50-56
Sulpher (Dry) 62-75
Sunflower (Seed Whole) 25
Sunflower (Seed Hulled) 17-28
Sunflower (Hulls) 6
Thomas Slag 82-112
Urea 37-47
Wheat 45-49
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