A commercial family of steelmaking additions whose principal declared control variables are silicon and carbon. Depending on the confirmed SKU, it may be a smelted material or an agglomerated composite; after process review it may support combined Si/C adjustment, deoxidation practice or heat-balance trials. Phase constitution, chemistry, residuals, sizing, recovery and addition practice must be confirmed by the formal TDS, lot COA and plant trial.
Combined silicon and carbon adjustmentProcess-validated deoxidation additionMass-balance-reviewed consolidation of additionsHeat-balance trials for selected formulations
Key indicatorsTotal Si / total C · SiC, free Si, free C, Fe, ash / SiO₂ · P / S / N / Al / Ca / Mn / Cr / O / moisture / volatiles
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.
01
What it is
A commercial family of steelmaking additions whose principal declared control variables are silicon and carbon. Depending on the confirmed SKU, it may be a smelted material or an agglomerated composite; after process review it may support combined Si/C adjustment, deoxidation practice or heat-balance trials. Phase constitution, chemistry, residuals, sizing, recovery and addition practice must be confirmed by the formal TDS, lot COA and plant trial.
02
What it does
Combined silicon and carbon adjustment
Process-validated deoxidation addition
Mass-balance-reviewed consolidation of additions
Heat-balance trials for selected formulations
03
Where it fits
Tapping deoxidation/alloy rough adjustment, ladle trimming, or a specifically approved BOF heat-input point
Charge, melting or an approved pre-tap chemistry-correction point
04
Boundary not to miss
A fixed Si/C ratio may cause one element to reach its limit first; oxidising slag, undissolved particles, binder/ash, P/S/N and moisture can affect recovery, cleanliness and safety
Not suitable for unreviewed ultra-low-carbon, ultra-low-S/P or high-cleanliness grades
A fixed Si/C ratio, ash, binder, undissolved particles or residuals may cause element overrun, inclusions or recovery variation
SELECTION BOUNDARY
Start with the selection boundary
Silicon-carbon alloy is a commercial name for additions contracted mainly by total Si and total C; it is not stoichiometric silicon carbide (SiC), nor is it automatically ferrosilicon under GB/T 2272 or a steelmaking recarburizer under YB/T 192. ‘Silicon-carbon ball/briquette’ describes a form, while ‘high-carbon silicon’ may cover different smelting or blending routes. An inquiry must confirm the route, phase constitution or SiC/free-Si/free-C, Fe and ash/SiO₂, P/S/N/Al/Ca, sizing/strength, moisture and formal TDS/COA. GB/T 38823—2020 Silicon-carbon is an ICS 29.050 conductor material, not this steelmaking product; foundry-iron use also needs separate validation, and this product is not an inoculant or nodulariser.
PRODUCT MANUFACTURING
Product manufacturing process
Silicon-carbon alloy is not one manufacturing route. A documented SKU may be smelted, cooled and crushed, or produced by inspecting, sizing and blending silicon- and carbon-bearing feeds followed by binding, agglomeration and drying. The route and feedstock boundary must be identified in the TDS.
01Confirm supply chain, feed identity and smelted/blended route
02Smelt and cast, or crush, homogenise, bind and agglomerate, as applicable
03Dry or cool, screen and control fines after handling
04Test chemistry, phase constitution, sizing and agglomerate strength by lot
05Moisture-protect the pack, identify the route and retain lot traceability
SPECIFICATIONS & PACKAGING
Grades, specifications, indicators and packaging
A complete specification includes at least total Si, total C, production route and phase constitution, with SiC/free Si/free C, Fe, ash or SiO₂, P, S, N, Al, Ca, Mn, Cr, O, moisture and volatiles agreed by use. Form, size distribution, agglomerate strength, bulk density, pack and test methods must map to the same SKU.
01Confirm production route, product identity and formal SKU
02Fix total Si, total C and phase-constitution acceptance
03Set residual, ash and moisture limits by steel grade
04Confirm sizing, fines, agglomerate strength, density and pack
05Check TDS, SDS/PSI, COA and sampling method
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-carbon alloyConfirm grade, applicable standard and guaranteed values before quotation
P / S / N / Al / Ca / Mn / Cr / O / moisture / volatilesConfirm in inquiry
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-carbon alloy
Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.
Key indicators
Total Si / total C · SiC, free Si, free C, Fe, ash / SiO₂ · P / S / N / Al / Ca / Mn / Cr / O / moisture / volatiles
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.
01
Steelmaking plants
Tapping deoxidation/alloy rough adjustment, ladle trimming, or a specifically approved BOF heat-input point
Furnace / equipment
BOF/EAF tapping and reviewed LF/ladle routes; selected formulations only as validated BOF heat-balance trial additions
Material / output
Carbon, low-alloy and other reviewed steels that permit simultaneous Si and C input
02
Steel foundries
Charge, melting or an approved pre-tap chemistry-correction point
Furnace / equipment
Steel-foundry EAF or induction furnace approved by formal TDS and furnace trials
Material / output
Cast steel that permits simultaneous Si and C input with defined residual, ash and cleanliness budgets
APPLICATION METHOD
Application method and effect validation
Application must be designed with separate Si and C mass balances, steel oxygen potential, slag, temperature and furnace-specific recovery. Run a small plant trial before setting the window from steel samples, inclusion/slag condition, dust and heat balance; this page provides no cross-grade fixed dose or replacement ratio.
01Confirm grade, furnace, target and addition point
02Check lot COA, production route and dry condition
03Balance Si and C separately and check residuals and thermal effect
04Add under the approved practice and ensure dissolution and mixing
05Resample, verify and define stop and correction criteria
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
Tapping deoxidation/alloy rough adjustment, ladle trimming, or a specifically approved BOF heat-input point
Furnace / equipment
BOF/EAF tapping and reviewed LF/ladle routes; selected formulations only as validated BOF heat-balance trial additions
Material / output
Carbon, low-alloy and other reviewed steels that permit simultaneous Si and C input
Method
Confirm route, lot chemistry and phase constitution, then check endpoint oxygen, initial/target Si and C, slag, temperature, charging equipment and sizing. Use dry feed, add under the approved practice, ensure dissolution and mixing, then resample; do not copy a patent or another mill's sequence directly.
Quantity determination
Make separate Si and C mass balances, with the element that reaches its grade limit first constraining the dose. Recovery must come from furnace- and grade-specific trials, with P, S, N, Al, Ca, Fe, ash and thermal effect checked; no fixed kg/t is published.
Expected effects
Supports combined Si/C adjustment and deoxidation practice under compatible grade and oxygen conditions
May reduce separate weighing steps after validation
Limits and risks
A fixed Si/C ratio may cause one element to reach its limit first; oxidising slag, undissolved particles, binder/ash, P/S/N and moisture can affect recovery, cleanliness and safety
Not suitable for unreviewed ultra-low-carbon, ultra-low-S/P or high-cleanliness grades
02
Steel foundries
Charge, melting or an approved pre-tap chemistry-correction point
Furnace / equipment
Steel-foundry EAF or induction furnace approved by formal TDS and furnace trials
Material / output
Cast steel that permits simultaneous Si and C input with defined residual, ash and cleanliness budgets
Method
First confirm whether the product is smelted material or an agglomerated blend and review lot phase constitution, Si/C, ash, P/S/N, moisture and sizing; make separate Si and C mass balances for the cast-steel grade, ensure dissolution and mixing, then resample.
Quantity determination
The Si or C that reaches its grade limit first constrains the dose; recovery must come from trials for the furnace, product form and grade, with no fixed kg/t published.
Expected effects
Supports combined Si/C adjustment and simplified additions within a validated window
Limits and risks
A fixed Si/C ratio, ash, binder, undissolved particles or residuals may cause element overrun, inclusions or recovery variation
STORAGE & SAFETY
Storage, handling and risk
Keep dry and protected from rain and moisture; never introduce wet feed into molten metal.
Control fines during crushing, screening, transfer and charging, use local ventilation, and manage ignition sources and PPE under the risk assessment.
Safety classification must not be inferred from the trade name; gas evolution with water, transport and firefighting requirements must be reviewed against the actual SKU's latest SDS/PSI and destination rules.
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.
Blank COA template
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.
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-SICARBONSilicon-carbon 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.
