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Property Specification
Appearance Thick viscous translucent liquid
Color White to slightly grey
Specify Gravity, G/cm3 1.26 – 1.3
pH in Aqueous Slurry 10 – 12
% Total Solids 20.05 – 30.75
% Sodium Oxide 6.85 – 7.15
% Silicon Dioxide 21.9 – 24.3
SiO2/NA2O Ratio 3.2 – 3.4
Fe(ppm) 20 (Max)
PropertySpecification
AppearanceThick viscous translucent liquid
ColorWhite to sligthly grey
Specify Gravity, G/cm31.39 – 1.40
% Insoluble Matter0.5 (Max)
% Silicates38 – 41
SiO2/NA2O Ratio2.8 – 3.0
PropertySpecification
AppearanceThick viscous translucent liquid
ColorWhite to grey
Specify Gravity, G/cm31.4 – 1.6
% Insoluble Matter0.5 (Max)
% Silicates41 – 48
SiO2/NA2O Ratio1.8 – 2.5
OdourMaterial should have no objectional odour
TextureThe liquid must be pumable
CO5ppm (Max)
Cr5ppm (Max)
Fe20ppm (Max)
Ni5ppm (Max)

WELDING ELECTRODES
GRADE TW-100

PropertySpecification
AppearanceThick viscous translucent liquid
ColorWhite to Slightly Yellow
Specify Gravity, G/cm31.49 – 1.52
ph in Aqueous Slurry8-12
% Silicon Dioxide28-33
SiO2/NA2O2.1-2.5
Fe(ppm)20(max)

WELDING ELECTRODES
GRADE TW-80

PropertySpecification
AppearanceThick viscous translucent liquid
ColorLight White to Yellow
Specify Gravity, G/cm31.38 – 1.41
pH in Aqueous Slurry8-12
% Silicon Dioxide27-30
SiO2/Na2O2.8-3.0
Fe(ppm)20(max)
PropertySpecification
AppearanceThick viscous translucent liquid
ColorWhite
Specify Gravity, G/cm31.413
%Silicates37.21
Na2O10.55
SiO226.6
SiO2/NA2O Ratio2.53
pH11.5
Property Specification
Appearance Thick viscous translucent liquid
Color White
Specify Gravity, G/cm3 1.394
%Silicates 37.97
Na2O 9.01
SiO2 28.96
SiO2/NA2O Ratio 3.21
pH 11.0
Property Specification
Appearance Thick viscous translucent liquid
Color White to Yellow
Specify Gravity, G/cm3 1.49 – 1.52
% Insoluble Matter 0.5 (Max)
% Silicates 41 – 48
SiO2/NA2O Ratio 2.1 – 2.5
Property Specification
Appearance Thick viscous translucent liquid
Color White to slight yellow
Specify Gravity, G/cm3 1.49 – 1.51
% Insoluble Matter 0.01 (Max)
% Silicates 42 (Max)
SiO2/NA2O Ratio 2.37 – 2.5
Property Specification
Appearance Thick viscous translucent liquid
Color Light white to yellow
Specify Gravity, G/cm3 1.39 – 1.41
pH in Aqueous Slurry 10 – 12
% Silicon Dioxide 27 – 30
SiO2/NA2O 2.8 – 3.0
Fe(ppm) 20 (Max)
Property Specification
Appearance Thick viscous translucent liquid
Color White to slight yellow
Specify Gravity, G/cm3 1.39 – 1.46
% Insoluble Matter 0.5 (Max)
% Silicates 39 – 43
SiO2/NA2O Ratio 2.7 – 3.0
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