---
title: "High-Purity Ferroaluminum Master Alloy"
industry: "Other Basic Metal Production"
verification_protocol:
  urn: "URN:CNFX:ME:HIGH_PURITY_FERROALUMINUM_MASTER_ALLOY"
  data_integrity_hash: "7e7764156d92b1faf0545ca935d4f0de"
  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_FERROALUMINUM_MASTER_ALLOY"
  data_source_uri: "https://cnfx.com/llms/industry/other-basic-metal-production/product/high-purity-ferroaluminum-master-alloy.md"
  official_resource_url: "https://cnfx.com/industry/other-basic-metal-production/product/high-purity-ferroaluminum-master-alloy"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "Melting point range: 1150-1250°C, Aluminum content: 40-60 wt%, Iron content: 40-60 wt%, Density: 4.5-5.5 g/cm³"
    unit: "wt%"
  secondary_spec:
    status: "config-dependent"
    typical_range: "Melting point range: 1150-1250°C, Aluminum content: 40-60 wt%, Iron content: 40-60 wt%, Density: 4.5-5.5 g/cm³"
    unit: "wt%"
engineering_limits:
  max_safe_operating_point:
    value: 660
    unit: "°C"
    consequence: "Selective oxidation of aluminum forming Al₂O₃ surface layer (Ellingham diagram ΔG° = -1582 kJ/mol at 1000K), Formation of brittle FeAl₃ and Fe₂Al₅ intermetallic phases (Hume-Rothery rules violation), Liquid metal embrittlement at grain boundaries"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Moisture absorption exceeding 0.5 wt% H₂O during storage"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Vacuum-sealed packaging with desiccant (dew point &lt; -40°C), Controlled atmosphere storage (Argon blanket, O₂ &lt; 100 ppm)"
  - node_2:
      trigger: "Insufficient superheat during addition (ΔT &lt; 50°C above liquidus)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Pre-heating to 300°C minimum before addition, Ladle furnace temperature control with PID regulation (±10°C)"
bom_nodes:
  aluminum-matrix:
    type: "component"
    urn: "URN:CNFX:ME:ALUMINUM_MATRIX"
    interface_type: "physical-logic-coupled"
  iron-phase:
    type: "component"
    urn: "URN:CNFX:ME:IRON_PHASE"
    interface_type: "physical-logic-coupled"
  trace-elements:
    type: "component"
    urn: "URN:CNFX:ME:TRACE_ELEMENTS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ASTM A550-06(2021) STANDARD SPECIFICATION FOR FERROALUMINUM"
    scope: "Verified Engineering Specification"
  - standard: "ISO 5445:1980 FERROALLOYS - SAMPLING AND PREPARATION OF SAMPLES - GENERAL RULES"
    scope: "Verified Engineering Specification"
  - standard: "DIN 17560-1:1979 FERROALLOYS; CHEMICAL ANALYSIS OF FERROALUMINIUM"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/other-basic-metal-production/product/high-purity-ferroaluminum-master-alloy.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "3c5f11abeebc7a988993425a010738001c0ca3adf4fb76e993864071cf788b57"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: High-Purity Ferroaluminum Master Alloy

## 1. Technical Definition
Aluminum-iron alloy used as additive in steelmaking and non-ferrous metal production

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **Melting point range: 1150-1250°C, Aluminum content: 40-60 wt%, Iron content: 40-60 wt%, Density: 4.5-5.5 g/cm³**. Failure boundary: **Aluminum oxidation threshold at 660°C in air atmosphere, Iron-aluminum intermetallic phase embrittlement at 30-40 wt% aluminum, Thermal decomposition above 1400°C**, Mechanism: **Selective oxidation of aluminum forming Al₂O₃ surface layer (Ellingham diagram ΔG° = -1582 kJ/mol at 1000K), Formation of brittle FeAl₃ and Fe₂Al₅ intermetallic phases (Hume-Rothery rules violation), Liquid metal embrittlement at grain boundaries**.

### 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 |
| :--- | :--- | :--- | :--- |
| Moisture absorption exceeding 0.5 wt% H₂O during storage | 8 | Hydrogen gas evolution and porosity formation during steel ladle addition | Vacuum-sealed packaging with desiccant (dew point &lt; -40°C), Controlled atmosphere storage (Argon blanket, O₂ &lt; 100 ppm) |
| Insufficient superheat during addition (ΔT &lt; 50°C above liquidus) | 8 | Incomplete dissolution forming unmelted inclusions in final steel | Pre-heating to 300°C minimum before addition, Ladle furnace temperature control with PID regulation (±10°C) |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| primary_spec | Config-dependent | wt% | Verified |
| secondary_spec | Config-dependent | wt% | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Induction Melting Furnace**, **Alloy Analysis Spectrometer**, **Continuous Casting Machine**  
**Downstream Applications**: High-Strength Steel Plates, Aluminum Alloy Ingots, Specialty Automotive Components  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What are the main applications of high-purity ferroaluminum master alloy?
**A**: This master alloy is primarily used as an additive in steelmaking to improve strength and corrosion resistance, and in non-ferrous metal production to enhance aluminum-based alloys with controlled iron content for specific mechanical properties.

### Q: How does particle size affect the performance of ferroaluminum master alloy?
**A**: Controlled particle size (typically specified in mm) ensures consistent dissolution rates during melting, preventing segregation and enabling uniform distribution of aluminum and iron throughout the molten metal for predictable alloying results.

### Q: Why is low carbon content important in ferroaluminum master alloys?
**A**: Low carbon content (maximum wt% specified) minimizes unwanted carbide formation in final products, maintaining ductility and weldability in steels and preventing brittleness in non-ferrous alloys where carbon is an impurity.

## 6. Manufacturing Compliance
- ASTM A550-06(2021) STANDARD SPECIFICATION FOR FERROALUMINUM
- ISO 5445:1980 FERROALLOYS - SAMPLING AND PREPARATION OF SAMPLES - GENERAL RULES
- DIN 17560-1:1979 FERROALLOYS; CHEMICAL ANALYSIS OF FERROALUMINIUM

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: High-Purity Ferroaluminum Master Alloy](https://cnfx.com/industry/other-basic-metal-production/product/high-purity-ferroaluminum-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_FERROALUMINUM_MASTER_ALLOY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 8083b589
