China’s GB Standard on Brown Fused Alumina

There are several international standard on quality check of Brown Fused Alumina(BFA) such as Europe FEPA Standard, Japan JIS Standard etc. China’s GB Standard is similar to these standard which make international sales easier for us export suppliers.

Part I: Chemical Content Standard GB/T3043-2000

Size#

Chemical Contents(%)

                        Al2O3

TiO2 CaO
 

A

A-P1

4#~80#

(P8~P80)

95.00~97.50  

1.50~3.80

 

≤0.45

9#~150#

(P180~P220)

94.00~97.50
180#~220#

(P180~P220)

93.00~97.50
Finer Grades than 220#(P220) ≥92.00
  • B

A-P2

4#~80#

(P8~P80)

≥93.00 1.50~4.20 /
90#~220#

(P100~P220)

≥91.00 /
Finer Grades than 220#(P220) ≥90.00 ≤4.50 /
A-S 16#~220# ≥92.00 ≤4.20 /

 

Part II: Brown Fused Alumina Chemical Analysis Typical Size#

Size Range Typical Size#
4#~80#(P8~P80) 46#(P40)
90#~150#(P100~P150) 120#(P120)
180#~220#(P180~P220) 180#(P180)
Finer Grades than 220#(Finer Grades than P220) W14(P600)

 

Part III: Brown Fused Alumina Sampling Rules SN/T0357-95

Table 1 Brown Fused Alumina Abrasives Sizes

Total Product Quantity N Check on size#, quantity and packing  n&(Ac.Rc) Quality Check nl
1-3 n=N(0,1) nl=N
4-8 n=3(0,1) nl=3
9-50 n=5(0,1) nl=3
51-150 n=5(0,1) nl=5
151-500 n=5(0,1) nl=8
501-3200 n=20(1,2) nl=13
3201-35000 n=20(1,2) nl=20

Table 2 Brown Fused Alumina Non-abrasives Sizes 1st Grade

Total Product Quantity N Check on size#, quantity and packing  n&(Ac.Rc) Quality Check nl
1-3 n=N(0,1) nl=N
4-15 n=3(0,1) nl=3
16-25 n=5(0,1) nl=3
26-90 n=5(0,1) nl=5
91-150 n=5(0,1) nl=8
151-280 n=5(1,2) nl=13
281-500 n=5(1,2) nl=20
501-1200 n=20(1,2) nl=32
1201-3200 n=20(1,2) nl=50
3201-10000 n=20(1,2) nl=80

Table 3 Brown Fused Alumina Non-abrasives Sizes 2nd Grade

Total Product Quantity N Check on size#, quantity and packing  n&(Ac.Rc) Quality Check nl
1-3 n=N(0,1) nl=N
4-8 n=3(0,1) nl=3
9-15 n=3(0,1) nl=3
16-25 n=5(0,1) nl=5
26-50 n=5(0,1) nl=8
51-90 n=5(0,1) nl=13
91-150 n=5(0,1) nl=20
151-280 n=5(0,1) nl=32
281-500 n=5(0,1) nl=50
501-1200 n=20(1,2) nl=80
1201-3200 n=20(1,2) nl=125
3201-10000 n=20(1,2) nl=200

 

Brown Fused Alumina Fines Size#

 

Europe FEPA Size# China W#
F230 W# mean diameter in um
F240 W63 50
F280 W50 40
F320 W40 28
F360
F400 W28 20
F500 W20 14
F600 W14 10
F800 W10 7
F1000 W7 5
F1200 W5 3.5

 

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