Premium SiMn 6818 High-Performance Grade
Products Description
Premium SiMn 6818 (GB/T 4008 grade FeMn68Si18) is a high-performance silicomanganese alloy with Mn 65.0–72.0% and Si 17.0–20.0%, carbon controlled at ≤1.8%, phosphorus ≤0.25%, and sulfur ≤0.04% .
Chemical Composition
| Element | FeMn68Si18 Specification |
| Mn | 65-72% |
| Si | 17-20% |
| C | ≤1.8% |
| P | ≤0.25% |
| S | ≤0.04% |
| Fe | Balance |
Standard particle sizes: 10–50 mm, 10–100 mm, 20–150 mm, or customized cuts.
Products Advantage

1.Highest Mn/Si Ratio in Class: At Mn≥65% / Si≥17%, 6818 provides more manganese per ton than 6517 or 6014 - ideal for high-manganese steel grades (e.g., Hadfield steel, 200-series stainless).
2.Lower Carbon for Cleaner Steel: C≤1.8% minimizes carbon pickup in low-carbon and IF steel routes, meeting stricter impurity specs.
Packaging,Shipping & Certification
1.1MT FIBC with PE + Alu-Foil Liner - dual-layer moisture barrier for high-humidity ocean voyages (South America, Southeast Asia).
2.Ports of Loading : FOB Tianjin Port, Qingdao Port, or Shanghai Port, China
3.Lead Time : [10–20 days] after receiving L/C or T/T advance
4.Trade Terms : FOB, CFR, CIF, DAP, DDP (per Incoterms 2020)
5.Payment : T/T 30% deposit + 70% against B/L copy
Company Strength
Anyang Mingrui Silicon Industry Co., Ltd. - a comprehensive ferroalloy enterprise integrating R&D, production, and sales.


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