CORRTECH Silicon Iron Anodes are made by chill casting in metal mould. The anodes have more high density, more compact crystal structure and low consumption rate, thus have longer life. We produce this kind of anodes according to ASTM A518-86(grade 3) standard. They are made by Chill Cast technology, and have much higher performance and preferable quality than normal sand mould casting. We can provide all kinds of rod anodes and tubular anodes. Alloy Composition The alloy contains chromium which is better suited to situations where chlorine or other aggressive agents may be generated by electrolysis (e.g. in seawater or in deep well ground beds). Analysis (ASTM A518-86 Grade 3) Rod Tubular Nominal ASTM A518-86 Gr.3 Silicon 14.5% 14.20-14.75% Chromium 4.5% 3.25-5.00% Manganese 0.75% 1.5% max Carbon 0.95% 0.7-1.10% Molybdenum - 0.20% max Copper - 0.5% max Iron Balance Balance