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     Zinc powder is gray powder, is mainly used in zinc and environmental protecting coating, which are widely used in scale steel building block, its also applied in sea boat, container, car, aviation, power supply, road, agriculture and forest, metallurgy, petrochemical , medicine, chemical, dyeing and battery industry etc.

     According to the standard of GB/T6890-2000¬ Zinc powder (Chemical component) have 4 grade, Chemical component met with Form 1; grainsize have 500mess, 325mess, 170mess, 120mess Spec, grainsize meet with Form 2



Form 1 Zinc powder Chemical component standard (GB/T6890-2000)

Grade
Chemical component
Main assay >=(%)
Impurity=<(%)
Total zinc
Metal zinc
Pb
Fe
Cd
Insoluble matter in acid
1 grade
98
96
0.1
0.05
0.1
0.2
2 grade
98
94
0.2
0.2
0.2
0.2
3 grade
96
92
0.3
-
-
0.2
4 grade
96
88
-
-
-
0.2

Remark: o. 4 grade Zinc powder, s=<0.5%

Form 2 Zinc powder grainsize standard (GB/T6890-2000)

Spec
Residue on screen =<
Granularity distribution, >=(%)
Grainsize max (um)
Assay (%)
30um below
10um below
FZn30(500mess)
45
-
99.5
80
FZn45(325mess)
90
0.3
-
-
FZn90(170mess)
125
0.1
-
-
FZn125(120mess)
200
1.0
-
-

    According to the standard of GB/T6890-2000, Zinc powder in metal pail lined with plastic bag, net 25kg, 40kg, 50kg, or upon the customers

     We also have the product ability of different zinc powder upon your demand in Chemical component, Granularity distribution and package etc. The spec includes 0mess, 400mess, 600mess, 800mess, 1000mess etc.

     Superfine high reactive Zinc powder includes 500mess, 600mess, 800mess, 1000mess and above.

     The Chemical component and grainsize Spec of superfine high reactive Zinc powder meet with the standard of Form 3, Form 4 (QB)

Form 3 superfine high reactive Zinc powder Chemical component (QB)

Grade
Chemical component
Main assay >=(%)
Impurity=<(%)
Total zinc
Metal zinc
Pb
Fe
CD
1 grade
99.5
98
0.005
0.003
0.003
2 grade
99
97.5
0.02
0.01
0.02
3 grade
99
97
0.05
0.03
0.05

Form 4 superfine high reactive Zinc powder chemical component (QB)

Spec/index
Grainsize max =<(um)
Average grainsize =<(um)
Granularity distribution (um), >=(%)
30
25
22
15
10
500mess
30
6
100
99.8
-
-
-
600mess
25
5
0
100
99.8
-
-
800mess
22
4
0
0
100
99.8
-
1500mess
15
3
0
0
0
100
99.8