Major Class

Material Characteristics Included

Code Designation

Density

Bulk Density, Loose

Actual lbs/cu. ft.

Size

Very Fine

No. 200 Sieve (.0029") And Under

A₂₀₀

No. 100 Sieve (.0059") And Under

A₁₀₀

No.   40 Sieve  (.016") And Under

A₄₀

Fine

No.     6 Sieve  (.132") And Under

B₆

Granular

1/2" And Under

C ½

3" And Under

D₃

7" And Under

D₇

*Lumpy

16 "And Under

D₁₆

Over 16" To Be Specified
X = Actual Maximum Size

D_x

Irregular  

E

Flowability

Very Free Flowing - Flow Function > 10

1

Free Flowing - Flow Function > 4 But < 10

2

Average Flowability - Flow Function > 2 But < 4

3

Sluggish - Flow Function < 2

4

Abrasiveness

Mildly Abrasive              - Index 1-17

5

Moderately Abrasive     - Index 18-67

6

Extremely Abrasive       - Index 68-416

7

Miscellaneous

Properties

Or

Hazards

Builds Up and Hardens

F

Generates Static Electricity

G

Decomposes — Deteriorates in Storage

H

Flammability

J

Becomes Plastic or Tends to Soften

K

Very Dusty

L

Aerates and Becomes Fluid

M

Explosiveness

N

Stickiness-Adhesion

O

Contaminable, Affecting Use

P

Degradable, Affecting Use

Q

Gives Off Harmful or Toxic Gas or Fumes

R

Highly Corrosive

S

Mildly Corrosive

T

Hygroscopic

U

Interlocks, Mats or Agglomerates

V

Oils Present

W

Packs Under Pressure

X

Very Light and Fluffy - May Be Windswept

Y

Elevated Temperature

Z