Comparison Table of Abrasives Symbols
|
Abrasives
|
China
(GB/T 2476-1994)
|
Japan
(JIS R6111-1987)
|
Norton
U.S.A.
|
Universal
Co.
England
|
GFR
|
USSR
( гOCT2424-75)
|
ISO
|
|
Brown
aluminum oxide
|
A
|
A
|
A
|
A
|
NK
|
э
16A-12A
|
A
|
|
White
aluminum oxide
|
WA
|
WA
|
38A,WA
|
WA
|
EK
|
эB
25A-22A
|
WA
|
|
Microcrystal
Aluminum oxide
|
MA
|
TA(Showa
Denko K. K.)
|
44A,SH
|
T
|
|
|
|
|
Pink
Aluminum oxide
|
PA
|
PA
|
PA, PW
|
|
FA
|
эX
34A-32A
|
|
|
Single crystal
aluminum oxide
|
SA
|
HA
|
32A, DA
|
|
|
M
45A-43A
|
|
|
Zirconia
alumina
|
ZA
|
AZ, RG, RA
|
ZF, ZS
|
Z
|
|
|
|
|
Black
aluminum oxide
|
BA
|
|
|
|
|
|
|
|
Black
Silicon carbide
|
C
|
C
|
37C
|
BC
|
BC
|
Kч
55C-52C
|
C
|
|
Green
Silicon carbide
|
GC
|
GC
|
39C
|
C
|
SCG
|
Kэ
64C-62C
|
GC
|
|
Cubic
silicon carbide
|
SC
|
|
|
|
|
|
|
|
Boron
carbide
|
BC
|
|
|
|
|
B4C
|
|
|
