Tables are in alphabetical order. Click below to navigate to different sections. Use horizontal bar below table to view additional columns.

Table keys and explanations are located in the “Material Characteristics” Section.

A

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Acetylenogen (Calcium Carbide) + 1/2 70-80 30B 1.6 B4 II I II 1
Adipic Acid -100M 45 30A 0.8 D3 I II II 3
Alfalfa Meal -1/8 17 30A 0.9 B4 II I III . 7
Alfalfa Seed -1/8 48 30B 0.5 B4 II I I 1
Almonds -1/2 28-30 30B 0.9 B4 II I II 6
Alum -1/8 45-58 30A 0.6 A2 I I II •
Alum, lumpy + 1/2 50-60 30A 1.4 B1 I I II •
Alumina -100M 60-120 15 1.8 C4 III I I 2
Aluminate Gell, dried -100M 45 30B 1.7 B4 II I II  
Aluminum Chips -1/2 7-15 30A 0.8 A2 I I III 9
Aluminum Hydrate (Aluminum Hydroxide) -1/2 13-18 30A 1.4 A2 I I III  
Aluminum Oxide (Alumina) -100M 60-120 15 1.8 C4 III I I 2
Aluminum Ore (Bauxite) -3 75-85 15 1.8 D4 III I II  
Aluminum Silicate -1/8 49 45 0.8 A2 I I II  
Aluminum Sulfate (Alum) • • • • • • • •  
Amianthus (Asbestos ) Fibers 20-40 30B 1.0 B4 II I III 5,7,8
Ammonium Chloride, Crystalline -1/8 52 30A 0.8 A2 I I II  
Ammonium Nitrate -1/8 45-62 • • • • • • • 1.3
Ammonium Sulfate • 40-58 • • • • • III •
Andalusite (Aluminum Silicate) -1/8 49 45 0.8 A2 I I II  
Antimony -100M • 30B • B4 II I II •
Apple Pomace, dry -1/2 15 30B 0.5 B4 II I III 7
Arsenate of Lead (Lead Arsenate) -1/8 72 30A 1.0 A2 I I III 2, 5
Arsenic -100M 30 • • • • • • • 5
Arsenic Oxide (Arsenolite) • 100-120 • • • • • • • 5
Asbestos, Ore -1/2 81 15 1.2 C4 III I II 5
Asbestos, Shred Fibers 20-40 30B 1.0 B4 II I III 5, 7, 8
Ashes, Coal, dry -1/2 35-45 30B 2.0 B4 II I III  
Ashes, Coal, dry -3 35-45 30B 2.0 B4 II I III  
Ashes, Coal, wet -1/2 45-50 30B 3.0 D4 II II III 8
Ashes, Coal, wet -3 40-50 15 4.0 D4 II II III 8
Asphalt, Crushed -1/2 45 30A 2.0 A2 I I II  

B

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Bagasse, dry Fibers 7-10 30A 1.0 B1 I I III 5, 7, 8, 9
Bakelite -100M 30-40 30A 1.4 A2 I I III  
Baking Powder -100M 41 30A 0.6 A2 I I II  
Baking Soda (Sodium Bicarbonate) -100M 70-80 30A 1.0 A2 I I II  
Barite +1/2 120-180 15 2.0 D4 III I II  
Barite -100M 120-180 30B 2.6 B4 II I III 2
Barium Carbonate -100M 72 30B 1.6 B4 II I III 5
Barium Sulfate (See Barite) • • • • • • • •  
Bark, wood +1/2 10-20 30B 1.2 B4 II I III 9
Barley -1/8 37-48 45 0.4 A2 I I I 1
Baryte (Barite) • • • • • • • •  
Basalt -1/8 80-90 15 1.8 C4 III I I  
Bauxite, crushed -3 75-85 15 1.8 D4 III I II  
Beans. Castor -1/2 36 45 0.5 A2 I I I  
Beans, Castor, meal -1/8 35-40 30A 1.2 A2 I I II  
Beans, Navy -1/2 48 45 0.5 A2 I I I  
Beans, Soy -1/2 45-50 45 0.5 A2 I I I  
Beet Pulp, dry • 11-16 • • • • • • •
Beet Pulp, wet • 25-45 • • • • • • •
Bentonite +1/2 34-40 30B 1.2 B4 II I III 8
Bentonite -100M 50-60 30B 0.7 B4 II I II 2
Benzene Hexachloride -100M 56 30A 0.6 A2 I I III 5
Bicarbonate of Soda (Baking Powder) -100M 41 30A 0.6 A2 I I II  
Blood, dried +1/2 35-45 30B 1.7 B4 II I III  
Blood, ground -100M 30 30A 0.6 A2 I I II  
Bluestone (Copper Sulfate) + 1/2 60-70 30A 0.6 B1 I I II •
Bone Ash (Tricalcium Phosphate) -100M 40-50 30A 1.6 A2 I I III  
Bones, crushed -1/2 35-40 30B 2.0 B4 II I III  
Bones, ground -1/8 50 30B 1.7 B4 II I II  
Boneblack -100M 20-25 30B 1.7 B4 II I II  
Bonechar -1/8 40 30B 1.8 B4 II I II  
Bonemeal -1/8 50-60 30B 1.7 B4 II I II  
Borate of Lime -1/8 • 30A • A2 I I II •
Borax -1/2 60 30B 1.0 B4 II I II  
Borax -1/8 50-60 30B 0.7 B4 II I II  
Boric Acid -1/8 55 30A 0.8 A2 I I II  
Boron -100M 75 15 1.0 C4 III I II  
Bran -1/8 10-20 30A 0.4 A2 I I II 1, 7
Braunite (Manganese Oxide) -100M 120 30B 2.0 B4 II I II  
Brewers Grain, spent, dry -1/2 14-30 30A 0.4 A2 I I III  
Brewers Grain, spent, wet -1/2 55-60 30A 0.6 D3 I II III  
Bronze chips -1/8 30-50 15 0.8 C4 III I III  
Buckwheat -1/4 37-42 45 0.4 A2 I I I 1

C

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Calcine, flour -100M 75-85 30A 0.7 A2 I I II  
Calcium Carbide +1/2 70-80 30B 1.6 B4 II I II 1
Calcium Carbonate (Limestone) • • • • • • • •  
Calcium Fluoride (Fluorspar) -1/4 82 30B 2.0 B4 II I III  
Calcium Hydrate (Lime, hydrated) • • • • • • • •  
Calcium Hydroxide (Lime, hydrated) • • • • • • • •  
Calcium Lactate + 1/2 26-29 30A 0.6 B1 I I III 6, 8
Calcium Magnesium Carbonate + 1/2 90-100 30B 2.0 B4 II I II  
Calcium Oxide (Lime, unslaked) • • • • • • • •  
Calcium Phosphate -100M 40-50 30A 1.6 A2 I I III  
Calcium Sulfate (Gypsum) • • • • • • • •  
Carbon, activated -1/8 8-20 30B 1.2 B4 II I I 6
Carbon Black, fine -100M 4-6 30A 0.4 A2 I I III • 8
Carbon Black, pelleted -1/8 20-40 • • • • • • • , 3, 8
Carborundum* -1/2 100 15 3.0 C4 III I II  
Casein -1/8 36 30B 1.6 B4 II I II  
Cast Iron, chips -1/2 130-200 30B 4.0 B4 II I III  
Caustic Soda -1/8 88 30B 1.8 D4 II III II 3, 5
Caustic Soda, flakes -1/4 47 30A 1.5 D4 I III III 3,  5, 6, 8
Celite (Diatomaceous Earth) -100M 11-17 15 1.6 C4 III I II • , 2, 8
Cement, clinker +1/2 75-80 15 1.8 D4 III I II  
Cement, Portland -100M 75-85 30B 1.4 B4 II I II 2
Cerrusite (Lead Carbonate) -100M 240-260 30B 1.0 B4 II I II 2, 5
Chalk, crushed +1/2 85-90 30B 1.9 B4 II I III 8
Chalk, ground -100M 70-75 30B 1.4 B4 II I III 2, 8
Charcoal + 1/2 18-25 30B 1.4 B4 II I III 6
Chips, pulpwood +1/2 12-25 30A 1.0 B1 I I III 7, 9
Chrome Ore -1/2 125-140 15 2.5 C4 III I II  
Cinders, blast furnace +1/2 57 15 1.9 D4 III I III  
Cinders. Coal +1/2 40 15 1.6 D4 III I II  
Clay, Ceramic, dry -100M 65-80 30A 1.5 A2 I I II  
Clinker, cement + 1/2 75-80 15 1.8 D4 III I II  
Clover, seed -1/8 48 45 0.4 A2 I I I 1
Coal, Anthracite -1/2 52-60 30B 0.9 B4 II II II 1
Coal, pulverized -100M 32-35 30A 0.6 D3 I II III 1, 2
Coal, sized -1/2 50 30B 0.6 B4 II II II 1
Cocoa, beans -1/2 30-45 30A 0.4 A2 I I II 6
Cocoa, nibs -1/2 35 30A 0.5 A2 I I II  
Cocoa, powdered -100M 30-35 30A 0.9 A2 I I III 2, 8
Cocoanut shred 20-22 30A 1.0 B1 I I III  
Coffee, chaff -1/8 20 30A 0.5 A2 I I II 2, 7
Coffee, green bean -1/2 32-45 30A 0.5 A2 I I II 6
Coffee, ground -1/8 25 30A 0.6 A2 I I II 4
Coffee, roasted bean -1/2 22-26 45 0.4 A2 I I I  
Coffee, soluble -100M 19 15 0.8 A2 I I I 2, 3, 4, 6
Coke, loose +1/2 23-32 15 1.2 D4 III I III 6, 9
Coke, calcined +1/2 35-45 15 1.3 D4 III I II 9
Coke, breeze -1/4 25-35 15 1.2 C4 III I III  
Compost • 28 • • • I III III • , 8, 9
Copper Ore + 1/2 120-150 15 4.0 D4 III I II  
Copper Sulfate + 1/2 60-70 30A 0.6 B1 I I II •
Copperas (Ferrous Sulfate) -1/2 50-75 30B 1.0 B4 II I II  
Copra + 1/2 22-33 30A 1.0 B1 I I II  
Copra, cake + 1/2 25-30 30A 0.7 B1 I I II  
Copra, cake, ground -1/8 40-45 30A 0.7 A2 I I II  
Copra, meal -1/8 40-45 30A 0.7 A2 I I II  
Cork, ground -1/8 5-15 30A 0.5 A2 I I III  
Cork, granulated -1/2 5-15 30A 0.4 A2 I I III  
Corn, cracked -1/2 40-50 30A 0.7 A2 I I II  
Corn, seed -1/4 45 45 0.4 A2 I I I 1, 6
Corn, shelled -1/4 45 45 0.4 A2 I I I 1
Corn, germ -1/8 21 30A 0.4 A2 I I II  
Corn, grits -1/8 40-45 30A 0.5 A2 I I II  
Corn, sugar -1/8 31 30A 1.0 A2 I I II  
Corn, meal -1/8 32-40 30A 0.5 A2 I I II  
Cottonseed, dry, delinted -1/4 22-40 30A 0.9 A2 I I II  
Cottonseed, dry, undelinted -1/4 18-25 30A 0.8 A2 I I III  
Cottonseed, cake + 1/2 40-45 30A 1.0 B1 I I II  
Cottonseed, flakes -1/4 20-25 30A 0.8 A2 I I III  
Cottonseed, hulls -1/8 12 30A 0.9 A2 I I III 7
Cottonseed, meal -1/8 35-40 30A 0.4 A2 I I II  
Cottonseed, meats -1/8 40 30A 0.6 A2 I I II  
Cracklings -3 40-50 30A 1.3 B1 I I III  
Cryolite -1/2 90-110 30B 1.8 B4 II I II 5
Cryolite -100M 50-75 30B 2.0 B4 II I II 2, 5
Cutlet + 1/2 80-120 15 2.0 D4 III I II  
Cupric Sulfate (Copper Sulfate) + 1/2 60-70 30A 0.6 B1 I I II •

D-G

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Diatomaceous Earth (Diatomite) -100M 11-17 15 1.6 C4 III I II • , 2, 8
Dicalcium Phosphate -100M 40-50 30A 1.6 A2 I I III  
Disodium Phosphate -1/8 25-31 30B 0.5 B4 II I II 6
Dolomite (Calcium Magnesium Carbonate! + 1/2 80-100 30B 2.0 B4 II I II  
Earth, loam, dry, loose -1/8 76 30B 1,2 B4 II I III  
Ebonite -1/2 65-70 30A 0,8 A2 I I II  
Epsom Salts -1/8 40-50 30A 0.7 A2 I I II  
Ethanedioic Acid (Oxalic Acid) -1/8 60 30A 1.0 A2 I I III 3
Feldspar -1/8 100-160 30B 1.5 B4 II I II  
Feldspar -100M 65-75 30B 2.0 B4 II I III  
Ferrous Sulphate -1/2 50-75 30B 1.0 B4 II I II  
Ferrous Sulfide (Iron Sulfide) • • • • • • • •  
Fish Meal -1/8 30-40 30A 0.9 A2 I I III  
Fish Scrap • 40-50 30A • B1 I I III •
Flaxseed -1/8 43-45 45 0.4 A2 I I I 1
Flaxseed Cake + 1/2 48-50 30A 0.6 B1 I I II  
Flaxseed Meal -1/8 25 30A 0.4 A2 I I II  
Floridin (Fuller’s Earth) • • • • • • • •  
Flour, Wheat -100M 30-46 30A 0.6 A2 I I III 1, 4
Flue Dust, boiler, dry -100M 40-125 15 3.5 C4 III I II 2
Fluorspar (Fluorite) -1/4 82-110 30B 2.0 B4 II I III  
Fly Ash, dry -100M 35-45 30B 3.5 C4 III I I 2
Foundry Sand, dry -1/8 90-100 15 2.0 C4 III I II  
Fuller’s Earth, oil filter, burned -1/8 40 15 1.5 C4 III I II  
Fuller’s Earth, oil filter, raw -1/8 35-40 30B 1.0 B4 II I II  
Fuller’s Earth, oil filter, spent 35% oil 60-65 15 0.9 D4 III I III  
Galena (Lead Sulfide) -100M 240-260 30B 1.0 B4 II I II 2, 5
Gelatin, granulated -1/2 32 30A 0.8 A2 I I II 6
Gilsonite -1/2 37 30B 1.5 D4 II II II 1, 5
Glass, batch +1/2 80-100 15 1.8 D4 III I II  
Glue, ground -1/8 40 30B 1.7 B4 II I II  
Glue, pearl -1/2 40 45 0.5 A2 I I I  
Gluten, meal -1/8 40 30A 0.6 A2 I I II  
Grains, distillery, spent, dry lumps 30 30A 0.4 B1 I I II 7
Graphite Flake -1/2 40 30A 0.4 A2 I I II  
Graphite Flour -100M 28 45 0.4 A2 I I I 2
Graphite Ore +1/2 65-75 30A 0.4 B1 I I I  
Granite, broken +1/2 95-100 15 2.5 D4 III I II  
Grape Pomace -1/2 15-20 30B 1.4 B4 II I III 7
Grass Seed -1/8 10-32 30A 0.4 A2 I I II 1, 7
Green Vitriol (Ferrous Sulfate) -1/2 50-75 30B 1.0 B4 II I II  
Gypsum, calcined -1/2 55-60 30B 1.2 B4 II I II  
Gypsum, calcined -100M 60-80 30B 0.8 B4 II I III  
Gypsum, raw -1 90-100 30B 1.6 B4 II I II  

H-L

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Hexanedioic Acid (Adipic Acid) -100M 45 30A 0.8 D3 I II II 3
Hominy -1/2 37-50 30A 0.4 A2 I I II  
Hops, spent, dry Lumps 35 30A 0.8 B1 I I III  
Hops, spent, wet Lumps 50-55 30A 1.0 D3 I II III  
Hydroxybenzoic Acid (Salicylic Acid) -1/8 29 30A 0.6 A2 I I II 3
Ice, crushed +1/2 35-45 30A 0.4 • • • •  
Illmenite Ore -1/8 140 15 2.0 C4 III I II  
Iron Ore -1/8 120-180 15 2.0 C4 III I II  
Iron Pyrites (Iron Sulfide) • • • • • • • •  
Iron Sulfate (Ferrous Sulfate) -1/2 50-75 30B 1.0 B4 II I II  
Iron Sulfide -1/2 120-135 • • A2 I I I  
Iron Sulfide -100M 105-120 • • A2 I I I  
Iron Vitriol (Ferrous Sulfate) -1/2 50-75 30B 1.0 B4 II I II  
Kaolin Clay -3 163 30A 1.8 B1 I I II  
Kaolin Talc -100M 42-56 30B 2.0 B4 II I III  
Kryolith (Cryolite) • • • • • • • •  
Lactose -100M 32 30A 0.6 A2 I I II 4, 8
Lamp Black (Carbon Black) • • • • • • • •  
Lead Arsenate -1/8 72 30A 1.4 A2 I I III 2, 5
Lead Arsenite -1/8 72 30A 1.4 A2 I I III 2, 5
Lead Carbonate -100M 240-260 30B 1.0 B4 II I II 2, 5
Lead Ore -1/2 180-230 15 1.4 C4 III I III 5
Lead Oxide -100M 30-150 30B 1.0 B4 II I II 2, 5
Lead Oxide -200M 30-180 30B 1.2 B4 II I II 2, 5
Lead Sulfide -100M 240-260 30B 1.0 B4 II I II 2, 5
Lignite, air dried + 1/2 45-55 30A 0.8 B1 I I II  
Limanite -1/2 120 15 1.7 C4 III I III  
Lime, hydrated -1/8 40 30A 0.8 A2 I I II 2, 8
Lime, hydrated -200M 32-40 30A 0.6 A2 I I II 2, 8
Lime, unslaked -1/8 60 30A 0.6 A2 I I III 8
Lime, pebble, unslaked +1/2 53-56 30A 2.0 B1 I I III  
Limestone, agricultural -1/8 68 30B 1.4 B4 II I II  
Limestone, crushed +1/2 85-90 30B 1.6 B4 II I II  
Limestone, dust -100M 55-95 30B 1.0 B4 II I III 2
Lindane (Benzene Hexachloride) -100M 56 30A 0.6 A2 I I III 5
Linseed (Flaxseed) • • • • • • • •  
Litharge (lead Oxide) -100M 30-150 30B 1.0 B4 II I II 2, 5
Lithopone -100M 120-140 30A 1.0 A2 I I II 2, 5

M-O

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Magnesium Chloride (Magnesite) -1/2 33 30A 0.8 A2 I I III  
Magnesium Sulfate (Epsom Salts) -1/8 40-50 30A 0.7 A2 I I II  
Maize -1/4 45 45 0.4 A2 I I I 1
Malt, dry, ground -1/8 22 30A 0.4 A2 I I II 1, 7
Malt, dry, whole -1/2 27-30 30A 0.4 A2 I I II 1
Malt, wet or green -1/2 60-65 30A 0.4 A2 I I III  
Malt, meal -1/8 36-40 30A 0.4 A2 I I II  
Manganese Dioxide • 80 • • • • • • •
Manganese Ore -1/2 125-140 15 2.0 C4 III I III  
Manganese Oxide -100M 120 30B 2.0 B4 II I II  
Manganese Sulfate -1/2 70 15 2.0 C4 III I II  
Marble, crushed -1/2 80-95 15 2.0 C4 III I II  
Marl + 1/2 80 30B 1.6 B1 I I II  
Meat, ground -1/4 50-55 • • B4 II I I •
Meat Scraps 40 30B • D4 II I III • 9
Mica, ground -1/8 13-15 30B 0.7 B4 II I II  
Mica, pulverized -100M 13-30 30B 0.9 B4 II I II 2
Mica, flakes -1/8 17-22 30B 1.0 B4 II I I 7, 9
Milk, dried, flake -1/8 5-6 30A 0.4 A2 I I II 4
Milk, malted -100M 27-35 30A 0.4 A2 I I III 2, 4, 8
Milk, whole, dried -100M 20 30A 0.4 A2 I I III 2, 3, 4, 8
Milk Sugar (Lactose) -100M 32 30A 0.6 A2 I I II 4, 8
Milo -1/4 56 30A 0.4 A2 I I II  
Monosodium Phosphate -1/8 50 30B 0.6 B4 II I II  
Muriate of Potash -1/8 77 15 1.8 D4 III III II  
Mustard Seed -1/8 45 45 0.4 A2 I I I 1
Nicotinic Acid (Niacin) -1/8 35 30B 0.8 B4 II I II  
Niter (Potassium Nitrate) • • • • • • • • •
Oakite (Trisodium Phosphate) -1/8 60 30B 1.7 B4 II I II  
Oats -1/2 25-35 45 0.4 A2 I I I 1
Oats, rolled -1/2 19-24 30A 0.5 A2 I I II 1, 7
Oxalic Acid, crystals -1/8 60 30A 1.0 A2 I I III 3
Oyster Shells, ground -1/2 53 30B 0.9 B4 II I II  
Oyster Shells, whole + 1/2 80 30B 2.0 B4 II I II  

P-R

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Paper Pulp, stock 5% 62 30A 0.9 • • • • 9
Paper Pulp, stock 6-15% 60-62 30A 1.2 • • • • 9
Paraffine Cake, broken -1/2 30-45 30A 0.5 A2 I I II  
Peanuts, shelled -1/4 35-45 30A 0.4 A2 I I II 6
Peanuts, unshelled + 1/2 15-24 30A 0.6 B1 I I II 6
Peas, dried -1/2 45-50 45 0.5 A2 I I I 1, 6
Phosphate Acid -100M 60 30A 1.4 A2 I I II  
Phosphate, crushed + 1/2 75-85 30B 1.8 B4 II I II  
Phosphate, granular -1/8 90-100 15 1.7 C4 III I II  
Phosphate of Soda (Disodium Phosphate) -1/8 25-31 30B 0.5 B4 II I II 6
Phosphoprotein (Casein) -1/8 36 30B 1.6 B4 II I II  
Phosphoric Acid (Phosphate Acid) -100M 60 30A 1.4 A2 I I II  
Plaster of Paris (Gypsum) -200M 60-80 30B 0.9 B4 II I III 2
Plumbago (Graphite) • • • • • • • •  
Polyethylene, pellets -1/8 35 30A 0.4 A2 I I II 4, 6
Polystyrene, pellets -I/8 40 30A 0.4 A2 I I II 4, 6
Potash (Muriate of Potash) -1/8 77 15 1.8 D4 III III II  
Potassium Carbonate -1/8 50-80 30B 1.0 B4 II II II  
Potassium Chloride, pellets -1/4 120-130 30B 1.6 B4 II II II  
Potassium Nitrate -1/2 76 30B 1.0 B4 II II I 1
Potassium Nitrate -1/8 80 30A 1.2 D3 I II II 1
Potassium Sulfate -1/8 42-48 30B 1.0 B4 II I III 8
Pumice -1/8 40-45 15 1.6 C4 III I III  
Pyrite, pellets -1/2 120-130 30B 2.0 B4 II I II  
Quartz -1/8 85 15 1.8 C4 III I II  
Quicklime (Lime, unslaked) • • • • • • • •  
Red Lead (Lead Oxide) -100M 150-300 30B 1.0 B4 II I II 2, 5
Rice, hulled or polished -1/8 45-48 45 0.4 A2 I I I  
Rice, rough -1/8 32-36 30A 0.4 A2 I I II 1
Rice Bran -1/8 16-20 30A 0.4 A2 I I II 1, 7
Rice Grits -1/8 42-45 30A 0.4 A2 I I II  
Rubber, ground -1/8 23-50 30A 0.8 A2 I I III  
Rye -1/8 44-48 45 0.4 A2 I I I 1

S

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Safflower -1/8 45 45 0.4 A2 I I I 1
Safflower, cake + 1/2 50 30A 0.6 B1 I I II  
Safflower.meal -1/8 50 30A 0.6 A2 I I II  
Saffron (Safflower) • • • • • • • •  
Sal Ammoniac (Ammonium Chloride) -1/8 52 30A 0.8 A2 I I II  
Salicylic Acid -1/8 29 30A 0.6 A2 I I II 3
Salt, Dry Coarse -1/4 45-50 30B 1.0 B4 II II II 3
Salt, Dry Fine -1/8 70-80 30B 1.7 B4 II II II 3
Salt Cake (Sodium Sulfate) -1/4 85 30B 2.1 B4 II II II 3
Saltpeter (Potassium Nitrate) -1/2 76 30 B 1.2 C4 II III I 1
Sand, damp, bank -1/8 110-130 15 2.8 C4 III I III  
Sand, dry, bank -1/8 90-110 15 1.7 C4 III I II  
Sand, dry silica -1/8 90-100 15 2.0 C4 III I I  
Sand, foundry, prepared -1/8 90 15 3.0 C4 III I III  
Sand,foundry,shakeout + 1/2 90 15 2.6 D4 III I II  
Sawdust, dry -1/8 1013 30A 0.7 A2 I I III  
Shale, crushed -1/2 85-90 30B 2.0 B4 ll I II  
Shavings, wood, dry + 1/2 8-15 30A 0.5 B1 l I III 7, 9
Shellac -1/8 31 30A 0.8 A2 I I II 4
Silica Gel (Silicic Acid) -1/8 45 15 1.7 B4 III I II 3, 6
Silicon Dioxide (Quartz) -1/8 85 15 1.8 C4 III I II  
Slag, furnace -1/2 160-180 15 1.2 C4 III I II  
Slag, furnace +1/2 60-65 15 2.4 D4 III I II  
Slaked Lime (Lime, hydrated) • • • • • • • •  
Slate, crushed -1/2 80-90 30B 2.0 B4 II I II  
Slate, ground -1/8 82 30B 1.6 B4 II I II  
Sludge, sewage, dried -1/8 45-55 30B 0.5 D4 II III III  
Snow, fresh -1/8 5 12 30A 0.4 A2 I I III  
Snow, packed + 1/2 15-35 30A 0.8 B1 I I III  
Soap, beads or granules -1/4 15 35 30A 0.6 A2 I I II 3
Soap, chips -1/2 15-25 30A 0.4 A2 I I II 3
Soap, flakes -1/8 5-20 30A 0.6 A2 I I II 3
Soap, powder -1/8 20-25 30A 0.8 A2 I I II  
Soapstone (Talc) -100M 40-50 30B 0.9 B4 II I III 2, 8
Soda Ash, heavy -1/8 55-65 30B 1.0 B4 II I II  
Soda Ash, light -100M 20-35 30 B 0.8 B4 II I II 2, 7
Sodium Aluminate -1/8 72 30B 1.0 B4 II I II  
Sodium Aluminum Fluoride (Kryolith) • • • • • • • •  
Sodium Bicarbonate -100M 70-80 30A 1.0 A2 I I II  
Sodium Borate (Borax) • • • • • • • •  
Sodium Carbonate (Soda Ash) • • • • • • • •  
Sodium Chloride (Salt) • • • • • • • •  
Sodium Hydrate (Caustic Soda) • • • • • • • •  
Sodium Hydroxide (Caustic Soda) • • • • • • • •  
Sodium Nitrate -1/8 70-80 30A 1.2 A2 I I II 1
Sodium Phosphate -1/8 50 30B 0.6 B4 II I II  
Sodium Sulfate, dry + 1/2 85 30B 0.8 B4 II I II  
Sodium Sulfate, dry -1/8 65-85 30B 1.0 B4 II I II  
Sorghum  seed -1/8 32-52 45 0.5 A2 I I I  
Soybeans, cracked -1/4 30-40 30B 0.5 B4 II I II 1
Soybeans, whole -1/4 45-50 15 0.4 C4 III I I 1
Soybean, cake + 1/2 40-43 30A 1.0 B1 I I II  
Soybean Flakes, raw -1/4 20-26 30A 0.8 A2 I I II 7
Soybean Flakes, spent -1/4 18-20 30A 0.6 A2 I I II 7
Soybean Flour -100M 27-30 30A 0.8 A2 I I II 1
Soybean Meal, cold -1/8 40 30A 0.5 A2 I I II  
Soybean Meal,hot -1/8 40 30A 0.5 D3 I II II  
Starch -100M 2550 • • • • • • •
Steatite (Talc) • • • • • • • •  
Steel, chips, crushed + 1/2 100-150 15 1.6 D4 III I II  
Stibium (Antimony) • • • • • • • •  
Sugar, granulated -1/8 50-55 30A 0.7 A2 I I II 4, 6
Sugar, powdered -200M 50-60 • • • • • • •
Sugar, raw, cane -1/8 55-65 30A 1.0 A2 I I III 8
Sugar, wet, beet -1/8 55-65 30A 1.4 A2 I I III 8
Sugar Beet, pulp, dry -1/2 12-15 • 0.9 • II • II •
Sugar Beet, pulp, wet -1/2 25-45 • 1.2 • I • II 8
Sulphur, crushed -1/2 50-60 30A 0.8 A2 I I II 1
Sulphur, ground -1/8 50-60 30A 0.6 A2 I I II 1, 2
Sulphur, lumps -3 80-85 30A 0.8 B1 I I II 1

T-Z

Material Maximum Particle Size (IN.) Average Weight Per Cu.Ft. Loading H.P. Factor Component Series Abras-
iveness		 Corrosi-
veness		 Flow-
ability		 Note
Taconite, pellets + 1/2 116-130 15 2.0 D4 III I II 6
Talc -100M 40-60 30B 0.8 B4 II I III 2, 8
Talc -1/2 80-90 30B 0.9 B4 II I II  
Tanbark, ground • 55 30A 0.7 • • • • •
Titanium Dioxide (llmenite) -1/8 140 15 2.0 C4 III I II  
Thenardite (Sodium Sulfate) • • • • • • • •  
Tobacco, scraps + 1/2 15-25 30A 0.8 B1 I I III 7
Tobacco, snuff -100M 30 30B 0.9 B4 II I III 1, 2, 6
Tricalcium Phosphate -100M 40-50 30A 1.6 A2 I I III  
Trisodium Phosphate -1/8 60 30B 1.7 B4 II I II  
Tung Nut Meats, crushed +1/2 25 30A 0.8 B1 I I II  
Uintaite (Bentonite) • • • • • • • •  
Vermiculite, expanded -1/2 16 30B 0.5 B4 II I III 7
Vermiculite Ore -1/2 80 30B 0.8 B4 II I II  
Vulcanite (Ebonite) -1/2 65-70 30A 0.8 A2 I I II  
Walnut Shells, crushed -1/8 35-40 15 1.0 B4 II I II  
Wheat -1/4 45-48 45 0.4 A2 I I I 1
Wheat, cracked -1/8 35-45 30A 0.4 A2 I I I 1
Wheat, germ -1/8 18-28 30A 0.4 A2 I I I  
White Lead, dry -100M 75-100 30B 1.0 B4 II I II 2, 5
Wilkinite (Bentonite) • • • • • • • •  
Wood Bark + 1/2 10-20 30B 1.2 B4 II I III 9
Wood Chips + 1/2 10-30 30A 0.6 B1 I I III 7, 9
Wood, flour -200M 16-36 30A 0.4 A2 I I III 7, 8
Zinc, concentrate residue -1/8 75-80 15 1.0 C4 III I II  
Zinc Oxide, heavy -200M 30-35 30A 1.0 A2 I I III 2, 8
Zinc Oxide, light -200M 10-15 30A 0.8 A2 I I III 2, 7, 8

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