Abrasive product
British Standardised Marking System for Abrasive Products
From new abrasive wheel to be fitted, code present may be e.g. A 24 R 5 BF
(It may be necessary to identify the British standard code from another country) Some manufacturers
may only use parts of the above marking system, or may include their own reference numbers
Abrasive
Product
A
Aluminium Oxide A
Silicon Carbide C
Diamond D
Synthetic diamond SD
Course
Medium
Grade of
Abrasive
R
Grain Size
Surface Finish)
Fine
Structure
Surface Finish
Very Fine
8
30
80
220
10
36
100
240
12
46
120
280
14
54
150
320
16
60
180
400
20
500
24
600
The Lower the number the coarser the Final
Surface finish obtained.
Grade Scale of Abrasive Product
Glazed Brick
A B C D E F G H I
Very Soft wheel
Soft wheel
B
Vitrified
V
Resinoid
B
Rubber
R
Shellac
E
Silicate
S
Resinoid Reinforced BF
(Fibreglass based)
Dense
Open
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
etc.
Relation ship of abrasive to other
Materials.
Open porous structures used on
E.g. Steel Castings
Always use a Wheel/Disc opposite to the hardness of the material
Tool Steel
Concrete
Bond Type
(Glue used)
Monoblock / Paving Slabs
Mild Construction Steel
Bronze / Brass
J K L M N O P Q R S T U V
Medium wheel
Aluminium
Sandstone
W X Y Z
Hard wheel