YUXI has been manufacturing and supplying HSCI Solid Stick anodes for over 40 years and having initially manufactured all the Durichlor-51 Anodes at our plant in the UK. YUXI has developed a full product line of high silicon cast iron solid anodes with a capacity of over 3,000 tons per year from production facilities based in the UK and China. Solid anodes are manufactured by a Chill casting method using gravity to feed the metal mold.
CHEMICAL COMPOSITION
We developed rigid controls for the chill casting process in accordance with the highest standards — meeting X-Ray Level 1 as per ASTM E186/E446, chemistry to either ASTM A518-99 Gr 1 or 3. ASTM A518 Grade 3 chemistry is particularly suited for more severe environments(such as brackish water or saltwater), where the level of chromium is elevated to enhance anode performance.
◉ ASTM A518/A518M Grade 1 (Si-Fe)
|
Element |
Content (%) |
|
Silicon (Si) |
14.20 ~ 14.75 |
|
Chromium (Cr) |
0.500 max. |
|
Manganese (Mn) |
1.500 max. |
|
Copper (Cu) |
0.500 max. |
|
Molybdenum (Mo) |
0.500 max. |
|
Carbon (C) |
0.650 ~ 1.100 |
|
Phosphorus (P) |
- |
|
Sulphur (S) |
- |
|
Iron (Fe) |
Remainder |
◉ ASTM A518 / A518M Grade 3 (Si-Fe-Cr)
|
Element |
Content (%) |
|
Silicon (Si) |
14.20 ~ 14.75 |
|
Chromium (Cr) |
3.250 ~ 5.000 |
|
Manganese (Mn) |
1.500 max. |
|
Copper (Cu) |
0.500 max. |
|
Molybdenum (Mo) |
0.200 max. |
|
Carbon (C) |
0.700 ~ 1.100 |
|
Phosphorus (P) |
- |
|
Sulphur (S) |
- |
|
Iron (Fe) |
Remainder |
◉ BS 1591 1975
|
Element |
Content (%) |
|
Silicon (Si) |
14.25 ~ 15.25 |
|
Chromium (Cr) |
0.500 max. |
|
Manganese (Mn) |
0.500 max. |
|
Copper (Cu) |
- |
|
Molybdenum (Mo) |
- |
|
Carbon (C) |
1.400 max. |
|
Phosphorus (P) |
0.250 max. |
|
Sulphur (S) |
0.100 max. |
|
Iron (Fe) |
Remainder |
ELECTROCHEMICAL PROPERTIES
Due to its high content of silicon, the anode surface is readily and continually oxidized with a thin film of hydrated silicon oxides, which protects the anode from metal pitting. Our high silicon cast iron anodes exhibit extraordinary corrosion resistance and low consumption rate in low-pH environment.
◉ Soil
|
Technical Measurement |
Performance |
| Current Density (A/m²) |
2 ~ 5 |
|
Consumption Rate (kg/A.y) |
0.1 ~ 0.5 |
◉ Coke Breeze
|
Technical Measurement |
Performance |
| Current Density (A/m²) |
5 ~ 10 |
|
Consumption Rate (kg/A.y) |
0.05 ~ 0.3 |
PRACTICAL APPLICATION
Our high silicon cast iron stick anodes are widely used in vertical deepwell and horizontal groundbed trench to protect buried structures from corrosion. High utilization of the anode weight (60% ~ 70%) results in an economic cathodic protection solution.
