IS 1110 : 1990
Steel and Iron - Ferrosilicon – Specification
Summry
Ferrosilicon is an alloy of iron and silicon, typically containing 15–90% silicon, used as a deoxidizer in steel manufacturing and as an additive in cast iron and other ferrous alloys. It improves strength, hardness, and corrosion resistance while removing oxygen during steelmaking, ensuring high-quality metal products.
Why BIS Certificate is Mandatory for Ferrosilicon ?
BIS certification is mandatory to ensure ferrosilicon meets Indian Standards for chemical composition, silicon content, and purity. Certified ferrosilicon prevents defects in steel and cast iron production, ensures consistent quality, protects manufacturers from substandard imports, and maintains safety, reliability, and compliance in industrial metallurgical processes.
What is BIS Certified for Ferrosilicon ?
The BIS certified specification for ferrosilicon (commonly IS 1119) defines requirements for silicon and iron content, permissible impurities, physical properties, and testing methods. It ensures uniform quality, reliable deoxidizing efficiency, and safe use in steel and iron industries. Compliance guarantees the material meets standardized industrial performance requirements.
Test required for Ferrosilicon
| Title | Mandatory/Optional |
|---|---|
| Constitution of Consignment | Required |
Chemical Composition
| Title | Mandatory/Optional |
|---|---|
| Silicon | Required |
| Carbon | Required |
| Sulphur | Required |
| Phosphorus | Required |
| Aluminium | Required |
| Calcium | Required |
| Manganese | Required |
| Boron | Optional |
| Zirconium | Optional |
| Titanium | Optional |
| Size | Required |
| Extraneous contamination | Required |
Benefits of BIS Certification for Ferrosilicon
1. Quality Assurance BIS certification ensures ferrosilicon meets exact chemical composition and impurity limits, preventing defects in steel and iron production.
2. Industrial Reliability Certified material provides consistent deoxidizing and alloying performance, improving mechanical properties of steel and cast iron.
3. Safety Compliance Standards ensure safe handling, storage, and use of ferrosilicon in metallurgical processes, reducing hazards in factories.
4. Market Access and Legal Compliance BIS certification is mandatory in India, allowing manufacturers and importers to legally supply ferrosilicon without regulatory issues.
5. Enhanced Reputation and Trust Using BIS-certified ferrosilicon builds credibility with steelmakers, foundries, and industrial clients, improving market acceptance and fostering long-term business relationships.