Product specification

Export grade

Welding material grade

Aluminium metallurgy grade

Index

Yotech Standard

Yotech Standard

National First grade

Assay  (Active ingredients)          ％

≥99.0

≥99.0

≥98.0

Al                     ％

15-18 

17.5-18.5  

17.25-19 

K                      ％

28.0-32.0

27.0-31.0

29.0-31.0

F                      ％

48.0-53.0

50.0-53.0

52.15-55.0

Fe                     ％

≤0.001 

≤0.002 

≤0.005 

Sulfate radical (SO₄ )          ％

≤0.02 

≤0.05 

≤0.05 

Heavy metal (Pb)             ％

≤0.001 

≤0.001 

≤0. 01 

Chloride (Cl)              ％

≤0.01 

≤0.02 

≤0.1 

Na                    ％

≤0.1 

≤0.2 

≤0. 2 

Silica (SiO₂)       ％

≤0.002 

≤0.002

≤0. 06 

Intermediate inspection

Appearance Identification

white powder

white powder

white powder

Loss on dry (105℃/2H)  ％

≤4.0 (300℃/2H)

≤0.5 

≤1.5 

Whiteness (70-90um Granularity)  ％

≥95 

≥90 

≥95 

Melting point                  ℃

550-560 

550-580 

560-580 

Transmission (15％ Aq. solution)  ％

≥98 

≥92 

≥80 

Foreign substance detection

≤1mm/10

≤1mm/10

≤1mm/10

Granularity (U.S.SCREEN)   mesh

50％ pass 2000 mesh

50％ pass 1250 mesh

90％ pass 450 mesh

Shelf life year

Two years

Two years

Two years

Supply reference

Production process

99.5％HF Membrane KOH

99.5％HF Membrane KOH

99％HF Membrane KOH

Packing

25KG composite paper bag /16T/(20')FCL

25KG composite paper bag /16T/(20')FCL

25KG composite paper bag /16T/(20')FCL

Specification of price

FCL

FCL

FCL

Price           CNY/T

Validity period of quoted price

3 months

3 months

3 months