Ferroalloy · Combined Si + Mn Addition
硅锰 · Silicon-Manganese Alloy
Si 14–28% · Mn 60–68% · Replaces FeSi + FeMn in one addition
Silico-manganese delivers silicon and manganese in a single ferroalloy — deoxidising and alloying steel more economically than adding ferrosilicon and ferro-manganese separately. It is one of the most widely consumed alloys in EAF and converter steelmaking.
Silico-manganese (SiMn) is a combined silicon-manganese ferroalloy and one of the highest-volume additions in steelmaking. Because it brings both elements in a single charge, it deoxidises and alloys steel more efficiently than adding ferrosilicon and ferro-manganese separately — saving handling, slag volume and cost.
The silicon is a stronger deoxidiser than manganese, so SiMn gives clean, well-deoxidised steel while supplying the manganese needed for strength, hardenability and sulphur control. Standard grades such as Mn65Si17 suit most carbon and low-alloy steels; it is also the feedstock for producing medium- and low-carbon ferro-manganese.
Global Vista supplies SiMn with stable chemistry and controlled phosphorus from major Chinese producers, with full export documentation and flexible Incoterms to steel mills in India, Southeast Asia, the Middle East and beyond.
* Values are indicative typical/guaranteed figures and can be tailored to your specification. A Certificate of Analysis (COA) is delivered with every shipment; third-party inspection (SGS / Bureau Veritas / Intertek / CIQ) available on request.
Standard
The most common grade — combined Si + Mn for carbon and low-alloy steel.
Common: general steel
High-Mn
Higher manganese for grades needing more Mn alloying.
Common: alloy steel
Economy
Cost-optimised grade for high-volume rebar and construction steel.
Common: rebar / construction
Sizing
Standard furnace/ladle lump; powder available for cored wire.
Common: ladle addition
Primary combined Si + Mn deoxidation and alloying in EAF and converter steelmaking — the backbone addition for most steel grades.
High-volume, cost-sensitive deoxidation and strengthening for reinforcing bar and structural sections.
One alloy delivers both elements, simplifying charging, reducing slag volume and lowering total alloying cost.
SiMn is the raw material for producing medium- and low-carbon ferro-manganese by silico-thermic refining.
Combined Si and Mn addition for alloyed cast irons and steel castings.
Powder and briquette forms for precise ladle late-additions and cored-wire treatment.
Lot-traceable chemical and physical analysis with every shipment.
SGS, Bureau Veritas, Intertek or CIQ pre-shipment inspection on request.
Pre-shipment sample for your lab verification before bulk order.
Grade and granulometry tailored to your process, not sold as a generic commodity.
Tianjin Xingang · Qingdao · Shanghai
1 MT jumbo bags, 25kg bags, or bulk in container. Powder in sealed drums.
FOB, CIF, CFR, DAP available.
T/T or irrevocable L/C at sight. USD / EUR / JPY settlement.
15–25 days from order confirmation to vessel sailing.
Silico-manganese deoxidises and alloys steel by adding silicon and manganese in one charge. It is used across carbon, low-alloy and construction steels (especially rebar), and as feedstock for medium/low-carbon ferro-manganese.
SiMn supplies both silicon and manganese in a single addition, simplifying material handling, reducing slag volume and usually lowering total alloy cost. The silicon also improves deoxidation efficiency.
Mn65Si17 (Mn ~65%, Si ~17%) is the standard global grade for carbon and low-alloy steel. We also supply Mn68Si18 and economy grades like Mn60Si14 for high-volume rebar production.
SiMn pricing tracks manganese ore and energy costs and is quoted per MT against guaranteed Mn and Si content. Send grade, quantity and destination for a current FOB/CIF quote.
Yes. We can supply low-phosphorus SiMn (P ≤ 0.20%) for quality-sensitive grades; standard grades are typically P ≤ 0.35%. Specify your maximum P in the enquiry.
Trial orders from 20 MT. Production and contract volumes 100–1000+ MT for steel mills and traders, with full export documentation.
Specify your grade/size, quantity and destination port — we respond within one business day with FOB China and CIF quotes.