--- type: "product_component" title: "High-Purity Ferrovanadium Master Alloy" industry: "Other Basic Metal Production" verification_protocol: urn: "URN:CNFX:ME:HIGH_PURITY_FERROVANADIUM_MASTER_ALLOY" data_integrity_hash: "c1544e44cf2dd3ef5314948ffef0e85b" source_authority: "https://cnfx.com" strict_mode: true source_identity: provider: "CNFX Industrial Knowledge Graph" index_version: "2026.Q1-Universal" authority_id: "URN:CNFX:ME:HIGH_PURITY_FERROVANADIUM_MASTER_ALLOY" data_source_uri: "https://cnfx.com/llms/industry/other-basic-metal-production/product/high-purity-ferrovanadium-master-alloy.md" official_resource_url: "https://cnfx.com/industry/other-basic-metal-production/product/high-purity-ferrovanadium-master-alloy" is_verified_logic: true attributes: vanadium_content: status: "verified" value: "75–85" unit: "wt%" silicon_content: status: "verified" value: "≤1.5" unit: "wt%" phosphorus_content: status: "verified" value: "≤0.05" unit: "wt%" sulfur_content: status: "verified" value: "≤0.03" unit: "wt%" bulk_density: status: "verified" value: "3.5–4.5" unit: "g/cm³" particle_size_distribution: status: "verified" value: "10–50" unit: "mm" melting_point: status: "verified" value: "1480–1520" unit: "°C" density: status: "verified" value: "6.0–6.2" unit: "g/cm³" aluminum_content: status: "verified" value: "≤1.0" unit: "%" carbon_content: status: "verified" value: "≤0.5" unit: "%" manganese_content: status: "verified" value: "≤0.5" unit: "%" nitrogen_content: status: "verified" value: "≤0.1" unit: "%" oxygen_content: status: "verified" value: "≤0.2" unit: "%" engineering_limits: max_safe_operating_point: value: 0.3 unit: "wt" consequence: "Vanadium carbide precipitation at grain boundaries (VC formation with 0.77 nm lattice parameter) controls strengthening; oxidation follows parabolic rate law with activation energy 180 kJ/mol above 1700°C" fmea_matrix_quantitative: - node_1: trigger: "Incomplete vanadium dissolution during alloying due to insufficient mixing energy below 50 kJ/kg" mitigation_protocol: "Electromagnetic stirring at 0.3 Tesla field strength with 120 RPM rotational velocity during melting" - node_2: trigger: "Moisture absorption exceeding 0.1 wt% during storage forming V2O5·nH2O surface layer" mitigation_protocol: "Vacuum-sealed packaging with <100 ppm oxygen atmosphere and desiccant maintaining <10% relative humidity" bom_nodes: vanadium-matrix: type: "component" llms_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/component/vanadium-matrix.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:VANADIUM_MATRIX" urn: "URN:CNFX:ME:UNIT:VANADIUM_MATRIX" interface_type: "physical-logic-coupled" is_migrated_part: true iron-base: type: "component" llms_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/component/iron-base.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:IRON_BASE" urn: "URN:CNFX:ME:UNIT:IRON_BASE" interface_type: "physical-logic-coupled" is_migrated_part: true reductant-residue: type: "component" llms_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/component/reductant-residue.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:REDUCTANT_RESIDUE" urn: "URN:CNFX:ME:UNIT:REDUCTANT_RESIDUE" interface_type: "physical-logic-coupled" is_migrated_part: true manufacturing_compliance: url: "https://cnfx.com/llms/industry/other-basic-metal-production/product/high-purity-ferrovanadium-master-alloy.md" on_chain_sovereignty: contract_standard: "ERC-721-Industrial" metadata_hash: "249da741a1b6147a21e0e4a60ff687e9bee8b4e93202e31f1e7da2ae71e546e4" royalty_logic: "IPFS-CID-REQUIRED" mint_status: "logic-verified-ready" rag_vector_index: semantic_queries: - "High-Purity Ferrovanadium Master Alloy" - "ferrovanadium" - "master alloy" - "vanadium content" - "steel production" - "grain refiner" - "strengthening agent" - "GB/T 4139" - "High-Purity Ferrovanadium Master Alloy in Other Basic Metal Production" - "China High-Purity Ferrovanadium Master Alloy manufacturer" - "High-Purity Ferrovanadium Master Alloy supplier China" - "High-Purity Ferrovanadium Master Alloy vanadium_content" - "High-Purity Ferrovanadium Master Alloy silicon_content" - "High-Purity Ferrovanadium Master Alloy phosphorus_content" version: "3.3.5-EXTREME-SOVEREIGN-WEB3" --- # Industrial Specification: High-Purity Ferrovanadium Master Alloy ## 1. Technical Definition A master alloy of iron and vanadium used as a grain refiner and strengthening agent in steel production. ## 2. Engineering Reasoning & Causal Matrix > **Operational Intelligence**: Designed for **1550-1650°C melting temperature, 7.0-7.5 g/cm³ density, 0.5-2.0 wt% vanadium content**. Failure boundary: **Vanadium content below 0.3 wt% causes insufficient grain refinement, above 2.5 wt% leads to embrittlement; temperature exceeding 1700°C initiates excessive oxidation with 15% mass loss threshold**, Mechanism: **Vanadium carbide precipitation at grain boundaries (VC formation with 0.77 nm lattice parameter) controls strengthening; oxidation follows parabolic rate law with activation energy 180 kJ/mol above 1700°C**. ### 2.1 Analytical Physics Model Governed by the **Hansen Solubility Distance (HSP)**: > **Primary Equation**: $R_a = \sqrt{4\Delta\delta_d^2 + \Delta\delta_p^2 + \Delta\delta_h^2}$ > **Engineering Impact**: Predicts seal/gasket swelling when exposed to CIP chemicals. | Symbol | Variable Definition | Localized Reference | | :--- | :--- | :--- | | \delta_d | Dispersive | Engineering Constant | | \delta_p | Polar | Engineering Constant | | \delta_h | Hydrogen | Engineering Constant | ### 2.2 FMEA (Failure Mode & Effects Analysis) | Event Trigger | Severity | Failure Mode | Mitigation Strategy | | :--- | :--- | :--- | :--- | | Incomplete vanadium dissolution during alloying due to insufficient mixing energy below 50 kJ/kg | Not specified | Segregated vanadium clusters exceeding 100 μm diameter causing localized embrittlement | Electromagnetic stirring at 0.3 Tesla field strength with 120 RPM rotational velocity during melting | | Moisture absorption exceeding 0.1 wt% during storage forming V2O5·nH2O surface layer | Not specified | Hydrogen pickup >2 ppm during steelmaking causing porosity defects at 150 μm spacing | Vacuum-sealed packaging with <100 ppm oxygen atmosphere and desiccant maintaining <10% relative humidity | ## 3. Key Technical Parameters | Parameter | Value | Unit | Status | | :--- | :--- | :--- | :--- | | Vanadium Content | 75–85 | wt% | Verified | | Silicon Content | ≤1.5 | wt% | Verified | | Phosphorus Content | ≤0.05 | wt% | Verified | | Sulfur Content | ≤0.03 | wt% | Verified | | Bulk Density | 3.5–4.5 | g/cm³ | Verified | | Particle Size Distribution | 10–50 | mm | Verified | | Melting Point | 1480–1520 | °C | Verified | | Density | 6.0–6.2 | g/cm³ | Verified | | Aluminum Content | ≤1.0 | % | Verified | | Carbon Content | ≤0.5 | % | Verified | | Manganese Content | ≤0.5 | % | Verified | | Nitrogen Content | ≤0.1 | % | Verified | | Oxygen Content | ≤0.2 | % | Verified | ## 4. System BOM & Knowledge Routing ### Core Components (Recursive Links) ### Industrial DNA Context (De-duplicated) **Complementary Dependencies**: **Induction Melting Furnace**, **Vacuum Degassing System**, **Alloy Analysis Spectrometer** **Downstream Applications**: High-Strength Steel Plates, Tool and Die Steels, Aerospace Alloy Components ## 5. Engineering Risks & FAQ - **Caution**: - **Caution**: - **Caution**: ### Q: What is the typical vanadium content in this ferrovanadium master alloy? **A**: According to the directory reference, the vanadium content is 75–85 wt%, as specified in GB/T 4139. However, actual product specifications may vary, so it is essential to confirm the exact value with the supplier or manufacturer. ### Q: What are the maximum impurity levels for silicon, phosphorus, and sulfur? **A**: The maximum impurity levels are: silicon ≤1.5 wt%, phosphorus ≤0.05 wt%, and sulfur ≤0.03 wt%, as per GB/T 4139. These limits are important for controlling steel quality, but you should verify them with the supplier for the specific batch. ### Q: What is the particle size distribution of this alloy? **A**: The particle size distribution is 10–50 mm, as listed in the directory. This range is designed to control dissolution in molten steel. However, the actual size may vary, so it is recommended to check with the supplier. ### Q: How is this ferrovanadium used in steelmaking? **A**: It is added to molten steel during secondary metallurgy to introduce vanadium, which forms fine carbides that refine grain structure and strengthen the steel. The addition is typically done in a ladle or furnace, and the alloy's density and melting point influence its dissolution behavior. ## 6. Manufacturing Compliance --- ### 🛠️ Engineering Resource Access 🔗 **[Full Specification: High-Purity Ferrovanadium Master Alloy](https://cnfx.com/industry/other-basic-metal-production/product/high-purity-ferrovanadium-master-alloy)** ### 🌐 Knowledge Graph Topology > **Node Status**: Verified Engineering Spec > **Connectivity**: Linked to **3** standalone system nodes > **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph > **Reference ID**: HIGH_PURITY_FERROVANADIUM_MASTER_ALLOY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 85bbabca