Ferroalloy
Product Overview
Ferroalloy is an alloy of iron with other elements (silicon, manganese, chromium, molybdenum, vanadium, etc.) and is an indispensable additive in steelmaking and foundry production. In foundry melting, ferroalloys act as deoxidizers to remove oxygen from the molten metal and reduce porosity and slag inclusion defects, and as alloying agents to add alloying elements and adjust the structure and mechanical properties of the material.
We have established stable supply relationships with several submerged arc furnace producers, controlling raw material quality at source. Every batch is tested for chemical composition to national standards before delivery to ensure stable and consistent composition, and an inspection report is supplied with the goods.
Product Features
- ✓Complete grades - silicon, manganese, chromium, molybdenum, vanadium, tungsten and niobium series ferroalloys plus electrolytic cobalt, chromium metal, manganese metal and electrolytic copper in one stop
- ✓Stable and compliant main element content, with harmful impurities such as phosphorus and sulfur strictly controlled
- ✓Uniform lump size and dense fracture surface - fast melting and high absorption rate
- ✓Standard moisture-proof packaging, suitable for long-distance transport and long-term storage
- ✓Ample standing stock with batch supply according to demand
- ✓Non-standard composition and special grain sizes can be customized to meet individual process requirements
Common Grades and Technical Parameters
| Product Name | Common Grade | Main Composition | Main Applications |
|---|---|---|---|
| Ferrosilicon | FeSi75 / FeSi72 / FeSi65 | Si ≥ 72.0~80.0% | Base material for deoxidizers, inoculants and nodulizers |
| High-Carbon Ferromanganese | FeMn68C7.0 / FeMn64C7.0 | Mn ≥ 64.0~72.0% | Deoxidation and alloying; improves strength and wear resistance |
| Medium / Low-Carbon Ferromanganese | FeMn82C1.0 / FeMn78C2.0 | Mn ≥ 75.0~85.0% | Manganese alloying in low-phosphorus applications |
| Silicomanganese | FeMn64Si27 / FeMn60Si14 | Mn ≥ 60.0%, Si ≥ 14-27% | Composite deoxidizer that adds both manganese and silicon |
| High-Carbon Ferrochrome | FeCr55C1000 / FeCr55C600 | Cr ≥ 52.0% | Chromium alloying of alloy cast iron and wear-resistant castings |
| Low / Micro-Carbon Ferrochrome | FeCr55C0.15 / FeCr55C0.06 | Cr ≥ 60.0% | Alloying of low-carbon steel and stainless steel castings |
| Ferromolybdenum | FeMo60 / FeMo55 | Mo ≥ 55.0~65.0% | Improves strength, heat resistance and hardenability |
| Ferrovanadium | FeV50 / FeV40 | V ≥ 40.0~60.0% | Refines the structure, improving strength and toughness |
| Ferrophosphorus | FeP24 / FeP21 | P ≥ 20.0~25.0% | Phosphorus alloying of wear-resistant cast iron and rolls |
| Ferroboron | FeB18 / FeB12 (low-aluminium ferroboron) | B ≥ 12.0~18.0% | Boron alloying of boron-containing cast iron (cylinder liners, piston rings, etc.) |
| Ferrotungsten | FeW80 / FeW70 | W ≥ 70.0~85.0% | Improves red hardness, high-temperature strength and wear resistance |
| Ferroniobium | FeNb65 / Brazilian ferroniobium | Nb ≥ 65.0% | Refines grains, improving strength and corrosion resistance |
| Electrolytic Cobalt | Co99.80 / Co99.65 / Co99.25 | Co ≥ 99.25~99.95% | High-purity cobalt source for cobalt alloying in special alloys |
| Chromium Metal | JCr99 / JCr98 | Cr ≥ 98.0~99.0% | Chromium alloying of low-carbon and ultra-low-carbon stainless steel castings |
| Manganese Metal / Electrolytic Manganese Metal | DJMn99.7 / DJMn99.5 | Mn ≥ 99.5~99.8% | Low-carbon manganese alloying with precise manganese supplement |
| Electrolytic Copper | Cu-CATH-2 (cathode copper) | Cu ≥ 99.95% | Copper alloying of alloy cast iron / cast steel |
* Grades in the table comply with the relevant GB/T national standards; special grades and composition ranges can be customized by agreement.
Key Product Notes
Ferrotungsten (FeW)
Ferrotungsten is an alloy of tungsten and iron, complying with GB/T 3648, with common grades FeW80-A, FeW80-B and FeW70. Tungsten melts at about 3400°C; added to molten metal it significantly improves high-temperature strength, red hardness and wear resistance, making it a key raw material for tungsten alloying of wear-resistant cast iron, high-temperature alloy castings and tool castings. Our ferrotungsten has stable main element content and uniform lump size, and can be processed into 10-100 mm lumps or powder on request.
Ferroniobium (FeNb)
Ferroniobium complies with GB/T 3283, with FeNb65 as the main grade, and Brazilian imported ferroniobium available all year round (Brazil is the world's principal ferroniobium source, with stable main element content and low impurities, well recognized by foundries). Niobium is a strong carbide-forming element; a trace addition effectively refines the grain structure, improving casting strength, toughness, creep resistance and corrosion resistance, while also improving weldability. It is widely used in low-alloy wear-resistant castings, stainless steel castings and special alloy cast steel parts. With high niobium recovery and low burning loss, it is recommended to add after melt-down with thorough stirring.
Ferroboron (FeB)
Ferroboron is an alloy of boron and iron complying with GB/T 5682, with common grades FeB18 and FeB12. Low-aluminium ferroboron is our main product, with controlled aluminium content to avoid porosity defects during alloying. Boron significantly improves hardenability and refines the structure; a trace addition improves the wear resistance and anti-seizing performance of cast iron. It is widely used in boron-containing cast iron such as cylinder liners, piston rings and brake parts. We recommend calculating according to target composition and adding after melt-down with thorough stirring to ensure uniform boron distribution and stable recovery.
Electrolytic Cobalt (Co)
Electrolytic cobalt is high-purity cobalt obtained by electrolytic refining, complying with GB/T 6516, with common grades Co99.80, Co99.65 and Co99.25, supplied as silver-grey metal plates (cut blocks). With high purity and few impurities, it is mainly used for cobalt alloying of special alloy and high-temperature alloy castings, and for melting cobalt-based alloys. Supplied as full plates or cut to size on request, with an inspection report for every batch.
Chromium Metal (Cr)
Chromium metal complies with GB/T 3211, with common grades JCr99 and JCr98 and a main element content of ≥98.0%-99.0%, supplied as silver-grey lumps / flakes. Compared with high-carbon ferrochrome, chromium metal has extremely low carbon and is used specifically for chromium alloying of low-carbon and ultra-low-carbon stainless steel and precision alloy castings, avoiding carbon pick-up and ensuring a clean matrix. It is best added after melt-down and before tapping with thorough stirring, precisely proportioned to target composition for stable recovery.
Manganese Metal / Electrolytic Manganese Metal (Mn)
Electrolytic manganese metal complies with YB/T 051, with common grades DJMn99.7 and DJMn99.5 and a manganese content of ≥99.5%-99.8%, supplied as flakes or regular thin sheets with high purity and few impurities. Compared with ferromanganese, it introduces almost no carbon or other impurities, making it suitable for precise manganese supplementation in low-carbon and ultra-low-carbon stainless steel and special alloy castings, with accurate manganese control and stable alloying composition. Store in a dry place and charge with the furnace burden according to the calculated ratio.
Electrolytic Copper (Cu)
Electrolytic copper (cathode copper) complies with GB/T 467, with Cu-CATH-2 as the common grade and a copper content of ≥99.95%, supplied as cathode plates or cut blocks. Copper is an important alloying element in cast iron and cast steel; an appropriate addition improves casting strength, hardness, wear resistance and corrosion resistance. It is commonly used in copper-alloy cast iron (such as cylinder heads and brake parts), copper-alloyed cast steel and special conductive or thermally conductive castings. Charged with the furnace burden according to the calculated ratio, it melts quickly with high recovery.
Available Particle Sizes
The common supply sizes are natural lumps and standard lumps; crushed and powder forms suit small-batch medium-frequency furnace melting with the charge. Other special grain sizes can be discussed and processed to order.
Usage Recommendations
- Charge calculation:Calculate the addition rate according to the target material composition and the recovery rate of each element (generally estimated from experience); recovery is affected by furnace temperature and addition timing.
- Addition timing:Alloys of easily oxidized elements (ferromolybdenum, ferrovanadium, ferroniobium, etc.) are best added after melt-down and before tapping with thorough stirring. Ferrotungsten has a high melting point and should be charged early with the furnace burden with sufficient superheat. Electrolytic cobalt should be charged with the burden according to the calculated ratio to prevent bridging. Pure metal charges such as chromium metal, manganese metal (electrolytic manganese) and electrolytic copper are calculated to target composition and added after melt-down with stirring; keep them dry and take only what is needed.
- Deoxidation sequence:Follow the principle of "manganese first, then silicon, then aluminium" for precipitation deoxidation, and tap and pour only after the deoxidation products have fully floated up.
- Verification and adjustment:Rapid in-front-of-furnace composition analysis is recommended, with fine adjustments based on the results to ensure the material remains compliant and stable.
Packaging, Storage & Transport
Packed in jumbo bags (1 ton per bag) or small bags on request. Store in a dry, ventilated warehouse, protected from moisture and rain; silica-containing products should be kept dust-free and away from fire during storage and transport. Road and rail transport can both be arranged, by full truckload or LTL.
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