Ferroalloys · Manganese series

High-carbon ferromanganese

A ferromanganese carbon grade used to adjust Mn while adding carbon in steelmaking, steel foundries and selected iron-foundry melting. The table gives standard-reference directions from GB/T 3795—2014 and public producer data, not Jinsheng lot guarantees.

Steel/iron manganese adjustmentSupporting deoxidation where carbon capacity permitsConventional manganese source for suitable steels and irons

View grades and specifications

Product codeFA-FEMN-HC

Industry application3

Key indicatorsMn · C · Si (group I / II) · P (group I / II)

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 is

What it does

Steel/iron manganese adjustment
Supporting deoxidation where carbon capacity permits
Conventional manganese source for suitable steels and irons

Where it fits

Tap Mn adjustment and supporting deoxidation, or a reviewed later chemistry correction
Melting, post-melt or tapping Mn adjustment
Charge, melting or pre-tap chemistry adjustment

Boundary not to miss

A high-carbon grade can exceed final carbon in low/ultra-low-carbon trimming; oxidising slag can lower Mn recovery
Low-carbon or residual-constrained cast steels may require medium/low-carbon ferromanganese or manganese metal
Excess Mn can increase pearlite, carbide or chill tendency and is unsuitable for unreviewed ferritic ductile iron

SELECTION BOUNDARY

Start with the selection boundary

High-carbon ferromanganese must be selected separately from medium-/low-carbon ferromanganese and manganese metal. Where final C, P, Si or S limits do not permit it, similar price or Mn content does not make it an automatic substitute for a low-carbon Mn source. Mn adjustment is neither deep desulfurisation nor cast-iron inoculation.

PRODUCT MANUFACTURING

Product manufacturing process

High-carbon ferromanganese is commonly made by carbothermic reduction of manganese ore with coke or other carbonaceous reductants and fluxes in a submerged-arc furnace; some production systems also use a blast-furnace route. Typical downstream steps are tapping, slag/metal separation, casting/cooling, crushing/screening and lot testing. Actual ore source, burden, furnace and operating practice require manufacturer documentation.

01Inspect manganese ore, coke/reductants, fluxes and manganese-bearing returns, then batch to the target burden
02Carry out high-temperature carbothermic reduction and melting in the confirmed submerged-arc or blast-furnace route
03Tap metal and slag under control, complete separation and retain heat identity
04Cast and cool while preventing mixing of heats or grades
05Crush and screen to the agreed sizing, controlling fines and foreign matter
06Test Mn, C, Si, P, S, sizing and lot uniformity before packing and retaining a sample

SPECIFICATIONS & PACKAGING

Grades, specifications, indicators and packaging

GB/T 3795-2014 and its applicable amendment may be used as inquiry references: FeMn78C8.0 references Mn 75.0%-82.0%, C <=8.0%, Si class I/II <=1.5%/2.5%, P class I/II <=0.20%/0.33% and S <=0.03%; FeMn74C7.5 references Mn 70.0%-77.0%, C <=7.5%, Si <=2.0%/3.0%, P <=0.25%/0.38% and S <=0.03%; FeMn68C7.0 references Mn 65.0%-72.0%, C <=7.0%, Si <=2.5%/4.5%, P <=0.25%/0.40% and S <=0.03%. These are standard reference grades, not Jinsheng supply guarantees; the formal TDS, contract and lot COA must define an order.

01Confirm the GB/T 3795 revision, amendment, grade and class-I/class-II residual category
02Place the Mn range and maximum C, Si, P and S in the same order specification
03Agree lump sizing, undersize, foreign matter and sampling/sample-preparation methods for the charging equipment
04Confirm pack net mass, lot identity, storage/transport conditions, TDS, SDS/PSI and COA
05Do not present reference values as stock, a fixed company grade or guaranteed chemistry before SKU approval

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 01FeMn78C8.0 standard referenceGrade reference under GB/T 3795—2014 and its current amendment; Jinsheng supply guarantees are governed by the formal TDS, contract and lot COA	Mn75.0–82.0% C≤8.0% Si (group I / II)≤1.5% / ≤2.5% P (group I / II)≤0.20% / ≤0.33% S≤0.03%	Public reference sizes include 20–250, 50–150, 10–50 or 10–70 mm; oversize/undersize tolerances and supplied sizing are confirmed by order Silver-grey to grey-black crushed cast alloy; appearance does not replace chemical testing	Bag, FIBC, steel-drum or bulk supply is confirmed against sizing, transport conditions and the formal order
Specification direction 02FeMn74C7.5 standard referenceGrade reference under GB/T 3795—2014 and its current amendment; Jinsheng supply guarantees are governed by the formal TDS, contract and lot COA	Mn70.0–77.0% C≤7.5% Si (group I / II)≤2.0% / ≤3.0% P (group I / II)≤0.25% / ≤0.38% S≤0.03%	Public reference sizes include 20–250, 50–150, 10–50 or 10–70 mm; oversize/undersize tolerances and supplied sizing are confirmed by order Silver-grey to grey-black crushed cast alloy; appearance does not replace chemical testing	Bag, FIBC, steel-drum or bulk supply is confirmed against sizing, transport conditions and the formal order
Specification direction 03FeMn68C7.0 standard referenceGrade reference under GB/T 3795—2014 and its current amendment; Jinsheng supply guarantees are governed by the formal TDS, contract and lot COA	Mn65.0–72.0% C≤7.0% Si (group I / II)≤2.5% / ≤4.5% P (group I / II)≤0.25% / ≤0.40% S≤0.03%	Public reference sizes include 20–250, 50–150, 10–50 or 10–70 mm; oversize/undersize tolerances and supplied sizing are confirmed by order Silver-grey to grey-black crushed cast alloy; appearance does not replace chemical testing	Bag, FIBC, steel-drum or bulk supply is confirmed against sizing, transport conditions and the formal 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

High-carbon ferromanganese

Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.

Key indicators: MnCSi (group I / II)P (group I / II)S
Size and form: Confirm against the addition method, equipment and order requirements
Packaging: Confirm in the quotation and order

02Specification direction

High-carbon ferromanganese

Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.

Key indicators: MnCSi (group I / II)P (group I / II)S
Size and form: Confirm against the addition method, equipment and order requirements
Packaging: Confirm in the quotation and order

03Specification direction

High-carbon ferromanganese

Compare the key indicators below, then confirm grade, guaranteed values, sizing and packing against the operating conditions.

Key indicators: MnCSi (group I / II)P (group I / II)S
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

Tap Mn adjustment and supporting deoxidation, or a reviewed later chemistry correction

Furnace / equipment: BOF/EAF tapping; ladle/LF where carbon pickup is permitted; early points with downstream decarburisation
Material / output: Carbon steels, selected low-alloy steels or Mn-adjusted grades with explicit final-C, P, Si and S headroom

Steel foundries

Melting, post-melt or tapping Mn adjustment

Furnace / equipment: Cast-steel EAF or induction furnace and a reviewed ladle point
Material / output: Carbon and selected low-alloy cast steels whose C, P, Si and S budgets permit high-carbon ferromanganese

Iron foundries

Charge, melting or pre-tap chemistry adjustment

Furnace / equipment: Cupola, induction or duplex iron melting
Material / output: Grey or alloyed irons requiring Mn adjustment and allowing its pearlite/carbide effect

APPLICATION METHOD

Application method and effect validation

High-carbon ferromanganese suits furnace or tapping-stage manganese adjustment where the final-carbon budget has headroom, and early alloying where downstream decarburisation is available. It is not suitable for final trimming of ultra-low- or low-carbon steel, nor may it be added from Mn demand alone where P, Si or S margins are insufficient. Calculate from net Mn increase and measured furnace recovery while treating carried C, Si, P and S as hard final-chemistry constraints.

01Confirm steel/iron grade, initial and target Mn, final-carbon ceiling and remaining P/Si/S capacity
02Applicability review: furnace, BOF/EAF tapping, or an early stage with downstream decarburisation
03Exclude ultra-low/low-carbon final trimming, carbon-constrained post-vacuum stages and heats with insufficient residual margins
04Calculate addition from measured Mn and recovery while simultaneously calculating C, Si, P and S carry-in
05Add under the approved practice, ensure melting/mixing and resample Mn plus every constrained element
06For cast iron, separately validate carbide, chill and microstructure risk; this product does not replace an inoculant or nodulariser

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.

Steelmaking plants

Tap Mn adjustment and supporting deoxidation, or a reviewed later chemistry correction

Furnace / equipment: BOF/EAF tapping; ladle/LF where carbon pickup is permitted; early points with downstream decarburisation
Material / output: Carbon steels, selected low-alloy steels or Mn-adjusted grades with explicit final-C, P, Si and S headroom
Method: Check pre-addition Mn/C/Si/P/S and slag oxidation, select grade and size, dissolve through the tapping stream or controlled stirring, then resample.
Quantity determination: Calculate from net Mn increase, measured product Mn and site recovery while checking C, Si, P and S carry-in. This page provides no fixed kg/t.

Expected effects

Establishes target Mn where carbon and residual budgets permit

Limits and risks

A high-carbon grade can exceed final carbon in low/ultra-low-carbon trimming; oxidising slag can lower Mn recovery

Steel foundries

Melting, post-melt or tapping Mn adjustment

Furnace / equipment: Cast-steel EAF or induction furnace and a reviewed ladle point
Material / output: Carbon and selected low-alloy cast steels whose C, P, Si and S budgets permit high-carbon ferromanganese
Method: Add from melt analysis and the final-carbon budget, allowing dissolution and homogenisation before resampling.
Quantity determination: Use an Mn mass balance with carbon carry-in as a hard limit.

Expected effects

Provides Mn alloying for suitable cast-steel grades

Limits and risks

Low-carbon or residual-constrained cast steels may require medium/low-carbon ferromanganese or manganese metal

Iron foundries

Charge, melting or pre-tap chemistry adjustment

Furnace / equipment: Cupola, induction or duplex iron melting
Material / output: Grey or alloyed irons requiring Mn adjustment and allowing its pearlite/carbide effect
Method: Calculate from base-iron Mn, S, returns and target matrix, then ensure dissolution and retest.
Quantity determination: Calculate from target Mn, measured product Mn and heat-specific recovery while checking C, P, Si, S and microstructure risk.

Expected effects

Establishes target Mn and influences the intended matrix

Limits and risks

Excess Mn can increase pearlite, carbide or chill tendency and is unsuitable for unreviewed ferritic ductile iron

STORAGE & SAFETY

Storage, handling and risk

Keep dry, segregate lots and control crushing dust. Do not add damp material to molten metal; follow the actual SDS and hot-metal practice for storage, transport and PPE.

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.

Jinsheng blank COA field template · 2026-08-14Open field template ↗

SOURCES

Public references and verification dates

GB/T 3795—2014 Ferromanganese and current amendment ↗Standard · 2026-09-07
ISO 5446:2017 Ferromanganese specification and delivery conditions ↗Standard · 2026-09-07
Sichuan Emei Ferroalloy: high-carbon ferromanganese references produced to GB/T 3795 ↗Manufacturer source · 2026-09-07
Eramet: manganese-alloy applications and production route ↗Manufacturer source · 2026-09-07

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-FEMN-HCHigh-carbon ferromanganese

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.