Centom Steels & Ferro Alloys Ltd. Also manufactures Low Carbon Silicon Manganese. Centom Steels & Ferro Alloys Ltd. Also manufactures different ranges of Silicon Manganese. Low Carbon Silico Manganese contains minimum 24% silicon. Low Carbon Silicon Manganese consists of 50-55 % manganese. It is available with Maximum 0.10% potassium. It can also be customised as per customer requirement.