What it is
Used for combined deoxidation and Mn/Si adjustment in steelmaking and steel foundries, and for cast-iron melt correction without replacing inoculation.
Ferroalloys · Manganese-silicon series
Silicomanganese
Used for combined deoxidation and Mn/Si adjustment in steelmaking and steel foundries, and for cast-iron melt correction without replacing inoculation.
Product codeFA-SIMN
Industry application2
Key indicatorsMn / Si · C / P / S · Mn / Si / C / P
Order boundaryQuotation and order confirmation
QUICK DECISION
Four answers before reading the technical detail
This section supports initial screening; final grade, addition and effects require operating conditions, formal documents and plant validation.
What it does
- Combined deoxidation
- Mn/Si adjustment
- Alloying
Where it fits
- Combined tap deoxidation and Mn/Si rough alloying, or ladle trimming
- Post-melt or ladle Mn/Si adjustment
Boundary not to miss
- The fixed Mn/Si ratio may not match the steel target; oxidising slag lowers recovery
- Standard SiMn is not a cast-iron inoculant
SELECTION BOUNDARY
Start with the selection boundary
SiMn is a compound alloy with a fixed Mn/Si ratio. Check both target elements plus C, P and S; it is neither two separate alloys nor a FeSi-based inoculant.
PRODUCT MANUFACTURING
Product manufacturing process
Silicomanganese is generally carbothermically reduced from manganese-bearing feed, silica source, reductants and fluxes in a submerged-arc/electric furnace, then cast, crushed and screened.
- 01Batch Mn source, silica source and reductants
- 02Submerged-arc/electric reduction smelting
- 03Tap and separate slag/metal
- 04Cast, cool, crush and screen
- 05Test Mn/Si/C/P/S and pack
- 1Feed and furnace
- 2Combined reduction
- 3Crushing and screening
- 4Two-element testing
The public external reference helps explain a similar product or typical process; it is not evidence of a Jinsheng-owned line, stock or customer site.
SPECIFICATIONS & PACKAGING
Grades, specifications, indicators and packaging
Manage standard, low-carbon or low-phosphorus families, focusing on the fixed Mn/Si ratio and C, P, S constraints.
- 01Confirm SiMn grade
- 02Check Mn/Si ratio and impurities
- 03Match sizing to equipment
- 04Confirm pack and lot analysis
GRADES & SPECIFICATIONS
Grades, specifications, indicators and packaging
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
| Grade / family | Chemistry | Size and form | Packaging |
|---|---|---|---|
| Specification direction 01SilicomanganeseConfirm grade, applicable standard and guaranteed values before quotation |
| Confirm against the addition method, equipment and order requirements | Confirm pack format, net weight and labels in the quotation and order |
| Specification direction 02SilicomanganeseConfirm grade, applicable standard and guaranteed values before quotation |
| Confirm against the addition method, equipment and order requirements | Confirm pack format, net weight and labels in the quotation and order |
ORDER SPECIFICATION CONFIRMATION
What must be confirmed before this becomes an order specification
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
- 01Confirm the product, grade, application and supply scope
- 02Fix guaranteed chemistry, sizing, form and packing in the quotation and order
- 03Agree sampling, test methods, acceptance rules and lot COA fields
- 04Confirm the required TDS, SDS/PSI, labels and delivery documents
SELECTION AND COMPARISON
Compare specification directions by indicators and operating conditions
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
01Specification direction
Silicomanganese
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- Mn / SiC / P / S
- Size and form
- Confirm against the addition method, equipment and order requirements
- Packaging
- Confirm in the quotation and order
02Specification direction
Silicomanganese
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- Mn / Si / C / P
- Size and form
- Confirm against the addition method, equipment and order requirements
- Packaging
- Confirm in the quotation and order
INDUSTRY APPLICATION
Industry, furnace, material and addition point
Confirm the process position before method and quantity calculations; an application relationship for one furnace or material must not be copied to another.
Steelmaking plants
Combined tap deoxidation and Mn/Si rough alloying, or ladle trimming
- Furnace / equipment
- BOF/EAF tapping and LF/ladle
- Material / output
- Carbon and low-alloy steel
Steel foundries
Post-melt or ladle Mn/Si adjustment
- Furnace / equipment
- EAF, induction furnace and ladle
- Material / output
- Carbon and low-alloy cast steel
APPLICATION METHOD
Application method and effect validation
Balance Mn and Si separately; the first limiting element determines addition. A fixed per-tonne ratio is insufficient.
- 01Confirm initial/target Mn and Si
- 02Calculate two-element limiting addition
- 03Add in tapping stream or ladle and mix
- 04Resample Mn, Si and C/P/S
PROBLEM AND SOLUTION
From operating objective to effect verification
Each application explains the role, method, quantity principle and risk boundary; the final proposal is confirmed against operating conditions and lot documents.
01
Steelmaking plants
Combined tap deoxidation and Mn/Si rough alloying, or ladle trimming
- Furnace / equipment
- BOF/EAF tapping and LF/ladle
- Material / output
- Carbon and low-alloy steel
- Method
- Choose the point from oxygen potential, target Mn/Si and slag, using tapping flow or stirring for dissolution.
- Quantity determination
- Calculate Mn and Si separately; let the limiting element determine the dose, then check the other element and C/P/S.
Expected effects
- Provides combined deoxidation and joint Mn/Si adjustment
Limits and risks
- The fixed Mn/Si ratio may not match the steel target; oxidising slag lowers recovery
02
Steel foundries
Post-melt or ladle Mn/Si adjustment
- Furnace / equipment
- EAF, induction furnace and ladle
- Material / output
- Carbon and low-alloy cast steel
- Method
- Add from melt analysis and homogenise; induction practice must not copy an EAF oxidising-slag regime.
- Quantity determination
- Determine from a two-element Mn/Si balance and site recovery.
Expected effects
- Deoxidation with joint chemistry adjustment
Limits and risks
- Standard SiMn is not a cast-iron inoculant
STORAGE & SAFETY
Storage, handling and risk
- Keep dry, control dust/fines and follow hot-metal charging procedures.
This section does not replace the company's final SDS/PSI or the plant safety procedure.
REFERENCE AND ORDER BOUNDARY
Use industry references to understand, then order documents to confirm
Supply specifications, packaging, lead time and quality documents are subject to the formal quotation and order confirmation.
DOCUMENTS & MEDIA
Images, TDS, SDS and COA
Document availability depends on the product, lot, destination market and order agreement.
TDS
Confirms product identity, guaranteed indicators, sizing, form and packing.
SDS / PSI
Confirms storage, handling, protection and market-specific safety information.
COA
Links a specific lot to test items, results, methods and issue information.
INDUSTRY TECHNICAL REFERENCES
Selected external reference material
The following items come from licensed public media or original producer websites and explain similar products or typical processes only. They are not Jinsheng photographs, TDS, SDS or lot COA and create no supply commitment.
Published manganese-alloy cooling video
An Eramet Marietta published process video for understanding manganese-alloy production; not a Jinsheng line.
Eramet Marietta · 2026-08-14Open reference ↗Official manganese-alloy product reference
Eramet's published ferromanganese and silicomanganese product overview; not a Jinsheng TDS.
Eramet · 2026-08-14Open reference ↗COA field template (not a certificate)
A blank structure for lot, chemistry, sizing, method, disposition and issue data. It contains no test result and cannot be used for delivery.
Jinsheng blank COA field template · 2026-08-14Open field template ↗SOURCES
Public references and verification dates
- GB/T 4008—2024 Ferromanganese-silicon ↗Standard · 2026-08-14
- OM Holdings manganese alloy production ↗Manufacturer source · 2026-08-14
Public sources supplement general facts; they do not replace Jinsheng's formal product specification, TDS or lot COA.
INQUIRY PREPARATION
Prepare these operating conditions for a more precise technical response
Please provide the specification, quantity, destination, and contact information.
Already includedFA-SIMNSilicomanganese
- 01Target industry, steel grade or casting material
- 02Furnace type, equipment, melt weight and current operating practice
- 03Measured chemistry, target chemistry and permitted residuals
- 04Planned addition point, temperature, slag and stirring conditions
- 05Current product, addition, recovery or operating-issue record
- 06Required size, form, packaging, quantity and destination
- 07Available melt analysis, microscopy, photographs or trial results
TECHNICAL AND QUOTATION CONSULTATION
Send the operating conditions for human review
Domestic inquiries are handled by the Domestic Sales Department and international inquiries by the International Sales Department. Price, availability and lead time are confirmed for each inquiry based on specification, quantity and delivery location.