Materials Table

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.

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

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

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	•

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

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

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

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

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

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