High Silicon Cast Iron Solid Stick Anode

This solid stick high silicon cast iron anode is made from the iron alloy which contains 14%~18% silicon with excellent acidic and alkali resistance. A porous and semi-conductive film of silicon dioxide (SiO₂) forms on the exterior surface of the anode to prolong anode life expectancy.

Our high silicon cast iron anode is manufactured by our “chill” casting method using gravity to feed the metal mold, which guarantees a rapid solidification of the molten metal. This ensures a superior grain structure is formed in comparison to standard sand-cast anodes, effectively improving anode utilization by up to 60% ~ 70%. Accelerated corrosion tests confirm that our proprietary chill casting anodes yield more ampere-years per pound than the competition.

With an end lead wire connection design, our high silicon cast iron stick anode provides a high performing corrosion protection solution for conventional or deep well cathodic protection systems, shallow installations and grounding cells.



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Centrifugal Casting Process

Our solid stick high silicon cast iron anodes are centrifugal chill cast. The casting mold rotates at over 1000rpm producing a g-force that eliminates any trapped gas from silicon iron and throws any impurities to the inside bore of the anode where they do not hinder anode performance. Hence, the metal matrix is tight and dense; increasing the life of the anode.

Compact Structure

Due to the consistent weight and greater density of the anode, there is less flake grain boundaries and lower chemical segregation. No gas porosity, no internal shrinkage and no non-metallic inclusions.

Tight Sealing Connection

Cast in taper pin or bolt connection with high quality epoxy resin encapsulation & heat shrink sleeve ensures superior cable connection at the anode head.

ISO 9001 Quality Control

Anodes are manufactured, inspected, and tested in accordance with our stringent quality control procedures to ensure high product quality every time. According to ASTM sampling practice, our anode samples are taken before and after every heat.

Chemical Composition

Element ASTM A518 / A518M Grade 1 (Si – Fe) ASTM A518 / A518M Grade 3 (Si – Fe – Cr) BS 1591 1975
Silicon (Si) 14.2% ~ 14.75% 14.2% ~ 14.75% 14.25 ~ 15.25%
Chromium (Cr) 0.5% max. 3.25% ~ 5.0% 0.5% max.
Manganese (Mn) 1.5% max. 1.5% max. 0.5% max.
Copper (Cu) 0.5% max. 0.5% max.
Molybdenum (Mo) 0.5% max. 0.2% max.
Carbon (C) 0.65% ~ 1.1% 0.7% ~ 1.1% 1.4% max.
Phosphorus (P) 0.25% max.
Sulphur (S) 0.1% max.
Iron (Fe) Remainder Remainder Remainder

Note: 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.

Electrochemical Properties

For anodes of the same chemistry and microstructure, variance in consumption is primarily due to the chemical and physical characteristics of the anode environment. The consumption rate does not appear to be significantly affected by current density (amperes per unit area of anode surface). The use of coke breeze around the anode in soil ground beds will tend to lower the consumption rate.

Environment Nominal Current Density Consumption Rate
Soil / Fresh Water 0.2 ~ 0.5 A/ft² (2 ~ 5 A/m²) 0.2 ~ 1.2 lbs/A.y (0.1 – 0.5 kg/A.y)
Coke Breeze 0.5 ~ 1 A/ft² (5 ~ 10 A/m²) 0.1 ~ 0.7 lbs/A.y (0.05 ~ 0.3 kg/A.y)
Seawater 1 ~ 5 A/ft² (10 ~ 50 A/m²) 0.7 ~ 1 lbs/A.y (0.3 ~ 0.5 kg/A.y)


High Silicon Cast Iron Stick Anodes Linedrawing

Item No. Shaft Diameter (ΦA) Head Diameter (ΦB) Overall Length Surface Area Weight
JA-48-SA2S Ф1.5″ (38mm) Ф2.5″ (63 mm) 48″ (1220mm) 1.61 ft² (0.15 m²) 23 lbs (10.5 kg)
JA-48-SA3S Ф2″ (51mm) Ф3.0″ (76 mm) 2.15 ft² (0.20 m²) 39.5 lbs (18 kg)
JA-48-SA4S Ф3″ (76mm) Ф4.0″ (102 mm) 3.23 ft² (0.30 m²) 88.2 lbs (40 kg)
JA-60-SA2 Ф1.5″ (38mm) Ф2.5″ (63 mm) 60″ (1524mm) 2.1 ft² (0.19 m²) 28.7 lbs (13 kg)
JA-60-SA3 Ф2″ (51mm) Ф3.0″ (76 mm) 2.7 ft² (0.25 m²) 48.5 lbs (22 kg)
JA-60-SA4 Ф3″ (76mm) Ф4.0″ (102 mm) 4 ft² (0.37 m²) 108 lbs (49 kg)

Remarks: All dimensions and weights shown are normal. Non-standard sizes and weights of the anode are available upon request.

Main Technical Parameters


High Silicon Cast Iron




Pipelines, Deep Well




We employ ISO 9001:2015 quality management system and rigorous internal testing standards to ensure the optimum lifespan and performance of our anodes. Each anode is labelled with a unique serial number for quality tracking.

Testing Details Chemical Composition Electrochemical Performance Physical Properties
Testing Standard ASTM E350 ASTM E186/E446 Foundry ITP
Testing Items Chemical Analysis Current Efficiency / Connection Resistance Dimension & Weight / Surface Finish / Cable Connection / Lead Wire Pulling Tension / Epoxy Resin Sealing
Equipments Optical Emission Spectrometer Labspark 750A / Thermoscientific Niton XL2-980 Electrochemical Analyzer EPI 200 Calibrated Digital Measuring Devices

Packaging Information

We have strict packing protocols to guarantee safe delivery of our products. Clear shipping marks and documentation make delivery acceptance straightforward and simple.

Item No. Anode Qty (per pallet) Pallet Dimension (L x W x H) Net Weight Gross Weight Pallet Qty (per 20ft. container)
JA-48-SA2S 90 57″ × 24″ × 29″ (1450 × 600 × 730mm) 2083lbs (945kg) 2194lbs (995kg) 22
JA-48-SA3S 56 57″ × 23″ × 28″ (1450 × 590 × 720mm) 2222lbs (1008kg) 2359lbs (1070kg) 20
JA-48-SA4S 25 57″ × 24″ × 27″ (1450 × 600 × 690mm) 2205lbs (1000kg) 2348lbs (1065kg) 20
JA-60-SA2 90 69″ × 24″ × 29″ (1760 × 600 × 730mm) 2379lbs (1170kg) 2734lbs (1240kg) 17
JA-60-SA3 56 69″ × 23″ × 28″ (1760 × 590 × 720mm) 2716lbs (1232kg) 2877lbs (1305kg) 16
JA-60-SA4 25 69″ × 24″ × 27″ (1760 × 600 × 690mm) 2701lbs (1225kg) 2855lbs (1295kg) 16

Remarks: Custom packing is available upon request.

Shipping Documents:

  • Proforma invoice
  • Packing list
  • Testing reports (Chemical Composition, Electrochemical Properties Test, Certificate of Compliance)
  • Certificate of origin (upon request)