What it is
A silicon-and-aluminium composite direction for deoxidation and chemistry adjustment in reviewed steelmaking and cast-steel practices; Si/Al ratio, residuals and timing must match the target grade.
Ferroalloys · Silicon series
Silicon aluminium alloy
Aliases: Ferrosilicon-aluminium alloy
A silicon-and-aluminium composite direction for deoxidation and chemistry adjustment in reviewed steelmaking and cast-steel practices; Si/Al ratio, residuals and timing must match the target grade.
Product codeFA-SIAL
Industry application2
Key indicatorsSi / Al · C / P / S / Ca / Ti
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
- Combined Si/Al adjustment
- Alloying
Where it fits
- Combined tapping deoxidation or ladle chemistry adjustment
- Post-melt or tapping deoxidation and final adjustment
Boundary not to miss
- Unsuitable Si/Al ratio or timing may exceed chemistry limits, increase Al₂O₃/complex inclusions or contribute to nozzle clogging
- The compound deoxidizer alone cannot guarantee internal casting quality; charge, slag, temperature, pouring and heat treatment still require control
SELECTION BOUNDARY
Start with the selection boundary
This silicon-aluminium family is a ferrous-metallurgy compound deoxidation/alloying material, not an Al-Si master alloy for aluminium casting. Confirm Si/Al ratio, Fe or other base, residuals, sizing, target steel, deoxidation practice and formal TDS.
PRODUCT MANUFACTURING
Product manufacturing process
Silicon-aluminium alloy may be made by producer-specific co-smelting or secondary alloying, followed by casting, cooling, crushing and screening. Smelted alloy and mechanically blended material must not share one SKU or quality basis.
- 01Confirm silicon/aluminium feeds and product route
- 02Smelt together or alloy under control
- 03Cast, cool and control homogeneity
- 04Crush, screen and sample
- 05Test Si/Al, residuals and sizing
SPECIFICATIONS & PACKAGING
Grades, specifications, indicators and packaging
The specification centres on Si/Al ratio and limits for C, P, S, Ca, Ti and other residuals. The fixed ratio must match the target grade; the product name is not a complete commercial specification.
- 01Confirm Si/Al ratio and product base
- 02Check residuals and inclusion route
- 03Match sizing to charging equipment
- 04Confirm formal TDS, pack and lot COA
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 01Silicon aluminium alloyConfirm 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
Silicon aluminium alloy
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
- Key indicators
- Si / AlC / P / S / Ca / Ti
- 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 tapping deoxidation or ladle chemistry adjustment
- Furnace / equipment
- BOF/EAF tapping, LF and ladle
- Material / output
- Steel grades reviewed for the Si/Al target and inclusion route
Steel foundries
Post-melt or tapping deoxidation and final adjustment
- Furnace / equipment
- EAF, induction furnace and ladle
- Material / output
- Process-validated carbon and alloy cast steels
APPLICATION METHOD
Application method and effect validation
Balance net Si and Al separately, with the first limiting element setting the upper addition. Sequence must match endpoint oxygen, grade-specific deoxidation and the inclusion-control objective.
- 01Confirm target Si and Al plus endpoint oxygen
- 02Calculate two-element limiting addition
- 03Choose tapping or ladle addition and mix
- 04Verify Si/Al, oxygen and inclusions
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 tapping deoxidation or ladle chemistry adjustment
- Furnace / equipment
- BOF/EAF tapping, LF and ladle
- Material / output
- Steel grades reviewed for the Si/Al target and inclusion route
- Method
- Set addition sequence from endpoint oxygen, target Si and soluble/total Al requirements; ensure immersion, dissolution and stirring while controlling reoxidation.
- Quantity determination
- Balance net Si and Al separately; the first limiting element sets the upper addition, followed by steel-sample and inclusion verification.
Expected effects
- Supports combined deoxidation with simultaneous Si and Al input in suitable practices
Limits and risks
- Unsuitable Si/Al ratio or timing may exceed chemistry limits, increase Al₂O₃/complex inclusions or contribute to nozzle clogging
02
Steel foundries
Post-melt or tapping deoxidation and final adjustment
- Furnace / equipment
- EAF, induction furnace and ladle
- Material / output
- Process-validated carbon and alloy cast steels
- Method
- Select the compound alloy from melt analysis and casting-quality requirements; do not copy steelmaking recovery or sequence directly to an induction furnace.
- Quantity determination
- Calculate from target Si/Al, measured product chemistry and furnace-specific recovery, then validate the practice by trial casting.
Expected effects
- Supports cast-steel deoxidation and coordinated silicon/aluminium control
Limits and risks
- The compound deoxidizer alone cannot guarantee internal casting quality; charge, slag, temperature, pouring and heat treatment still require control
STORAGE & SAFETY
Storage, handling and risk
- Keep dry and control crushing dust; wet feed must not contact molten metal, and final handling/PPE follow the applicable SDS.
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.
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
- YB/T 065—2008 Silicon aluminium alloy ↗Standard · 2026-08-17
- ICMD ferro-silicon-aluminium composite deoxidation overview ↗Manufacturer source · 2026-08-17
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-SIALSilicon aluminium alloy
- 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.