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Send EmailAluminum-Boron Master Alloy, AlB, 7429-90-5, 7440-42-8
Product Name: AlB (Aluminum-Boron Master Alloy)
Alloy System: Al-B binary alloy system
Primary Use: Impurity removal agent, grain refiner, and mechanical property improvement additive in aluminum alloys
| Parameter | Description |
|---|---|
| Product Name | Aluminum-Boron Master Alloy (AlB) |
| Alloy System | Al-B binary alloy |
| Alloy Type | Master alloy, grain refiner, impurity removal additive alloy |
| Main Components | Aluminum (Al), Boron (B) |
| Form | Rod, ingot, or granule |
| Color | Silver-gray |
| CAS Numbers | Aluminum (Al): 7429-90-5, Boron (B): 7440-42-8 |
| Primary Application | Grain refinement, impurity removal, casting quality improvement |
PRODUCT DESCRIPTION AND EXPLANATION:
Aluminum-Boron (AlB) master alloy is a pre-alloy (master alloy) containing controlled amounts of boron within an aluminum matrix. Master alloys are concentrated alloys used to add specific elements to aluminum alloys in a controlled and homogeneous manner.
AlB master alloy is used to add the element boron to aluminum-based alloys. Boron is an important element used in aluminum alloys as a grain refiner, impurity remover, and mechanical property improver. Boron reacts with transition metals (especially titanium, vanadium, chromium, molybdenum) dissolved in the aluminum melt to form stable borides (TiB₂, VB₂, CrB₂, MoB₂), preventing these elements from reducing the alloy's electrical conductivity.
AlB master alloy is particularly critical in the production of EC (Electrical Conductor) grade aluminum. Boron addition is used to improve the electrical conductivity of aluminum and refine the grain structure. It also improves casting quality, reduces hot tearing tendency, and improves mechanical properties.
This master alloy is supplied in rod, ingot, or granule form and can be produced with boron contents ranging from 0.5% to 5% according to customer requirements. AlB master alloy provides a reliable and homogeneous source for adding boron to the final alloy in aluminum foundries and alloy manufacturing facilities.
| Element | CAS No | Content (wt%) | Explanation |
|---|---|---|---|
| Aluminum (Al) | 7429-90-5 | Balance (~95.0 – 99.5) | Matrix main element |
| Boron (B) | 7440-42-8 | 0.5 – 5.0 | Active additive element; grain refiner, impurity remover |
| Other Impurities | - | ≤ 0.3 | Iron, silicon, titanium, etc. |
CHEMICAL COMPOSITION EXPLANATION:
The chemical composition of AlB master alloy is designed to contain controlled amounts of boron ranging from 0.5% to 5% within an aluminum matrix. The boron content can be customized according to customer requirements and final application needs. As boron percentage increases, the alloy's grain refinement and impurity removal effectiveness increase. Impurity levels are strictly controlled to ensure alloy quality. CAS numbers for Aluminum (7429-90-5) and Boron (7440-42-8) are provided for chemical identification and regulatory compliance.
| Property | Value / Range | Unit | Explanation |
|---|---|---|---|
| Form | Rod, ingot, or granule | - | According to customer request |
| Color | Silver-gray | - | Characteristic metallic appearance |
| Density | ~2.7 | g/cm³ | Based on aluminum matrix |
| Melting Point | 600 – 650 | °C | Depends on Al-B alloy composition |
| Melting Point (B) | ~2076 | °C | Pure boron reference |
| Electrical Conductivity | High | %IACS | Boron improves conductivity |
| Thermal Conductivity | High | W/m·K |
PHYSICAL PROPERTIES EXPLANATION:
AlB master alloy is supplied in rod, ingot, or granule form. It has a silver-gray color with a characteristic metallic appearance. Density is approximately 2.7 g/cm³ based on the aluminum matrix. The melting point ranges from 600-650°C depending on the exact alloy composition.
AlB master alloy is used to improve the electrical conductivity of aluminum. Boron precipitates dissolved transition metals (Ti, V, Cr, Mo) in the aluminum melt as borides, eliminating the negative effects of these elements on conductivity. Therefore, AlB master alloy is widely used in the production of EC (Electrical Conductor) grade aluminum.
| Property | Evaluation | Explanation |
|---|---|---|
| Grain Refinement | High | Significantly refines grain structure of aluminum alloys |
| Impurity Removal | High | Precipitates transition metals (Ti, V, Cr, Mo) as borides |
| Electrical Conductivity | Improved | Boron binds conductivity-reducing impurities, improving conductivity |
| Casting Quality | Improved | Reduces hot tearing tendency, improves surface quality |
| Mechanical Properties | Improved | Fine grain structure increases strength and ductility |
| Homogeneous Distribution | Good | Master alloy ensures homogeneous addition |
| Alloy Control | Precise | Boron content can be precisely controlled |
FUNCTIONAL PROPERTIES EXPLANATION:
The most important functional property of AlB master alloy is grain refinement in aluminum alloys. Boron forms AlB₂ and AlB₁₂ intermetallic phases in the aluminum melt, providing heterogeneous nucleation sites that significantly refine the grain structure. Fine-grained structure improves mechanical properties, reduces hot tearing tendency, and enhances casting surface quality.
AlB master alloy also functions as an impurity remover. Boron reacts with transition metals (titanium, vanadium, chromium, molybdenum) dissolved in the aluminum melt to form stable borides (TiB₂, VB₂, CrB₂, MoB₂). These borides precipitate from the melt and can be removed by filtration. This process significantly improves the electrical conductivity of aluminum, as these transition metals are the primary impurities that reduce aluminum's conductivity.
AlB master alloy provides precise alloy control; boron content can be precisely adjusted to optimize the final alloy's grain structure, conductivity, and mechanical properties.
| Application | Description |
|---|---|
| Grain Refinement | Used to achieve fine-grained structure in aluminum castings |
| EC Grade Aluminum | Used in production of high electrical conductivity aluminum (EC grade) |
| Impurity Removal | Binds transition metals (Ti, V, Cr, Mo) to improve conductivity |
| Casting Quality Improvement | Reduces hot tearing tendency, improves surface quality |
| Automotive Industry | Lightweight and durable cast parts |
| Aerospace Industry | High-quality casting components |
| Construction Industry | Structural profiles requiring conductivity and strength |
| Electrical Industry | Conductors, power transmission lines, transformer components |
| Electronics Industry | Heat sinks, electronic enclosures |
APPLICATION AREAS EXPLANATION:
Grain Refinement: AlB master alloy is used to achieve fine-grained structure in aluminum castings. Fine grain structure improves mechanical properties, reduces hot tearing tendency, and improves casting surface quality.
EC Grade Aluminum: AlB master alloy is critical in the production of EC (Electrical Conductor) grade aluminum. Boron improves the electrical conductivity of aluminum by binding conductivity-reducing impurities (Ti, V, Cr, Mo).
Impurity Removal: Boron precipitates transition metals in the aluminum melt as borides. This process improves the purity and conductivity of aluminum.
| Parameter | Information |
|---|---|
| Storage Conditions | Store in dry and cool environment |
| Storage Temperature | Ambient (room temperature) |
| Protection | Protect from moisture; keep away from direct sunlight |
| Oxidation Protection | Protection against oxidation recommended due to boron content |
| Shelf Life | Unlimited (under proper storage) |
| Packaging | Rods/ingots: Wooden pallets or metal crates; Granules: Closed containers |
| Transport | According to standard industrial transport rules; protect from moisture |
STORAGE AND TRANSPORT EXPLANATION:
AlB master alloy should be stored in a dry and cool environment, protected from moisture and direct sunlight. Due to boron content, appropriate protection measures should be taken to prevent surface oxidation during long-term storage. Under proper storage conditions, shelf life is unlimited. Packaging varies depending on product form: rod and ingot forms are shipped on wooden pallets or in metal crates, while granule form is shipped in closed containers (drums or bags). During transport, care should be taken to prevent the product from contacting moisture and to protect it from mechanical damage.
| Parameter | Information |
|---|---|
| GHS Classification | Not hazardous under normal use |
| Health Risks | Dust form may cause respiratory tract irritation |
| Melting Risks | Ensure adequate ventilation during melting operations |
| PPE Requirements | Gloves, safety goggles, dust mask |
| Dust Explosion Risk | Aluminum dust can be explosive |
| Storage | Dry and cool environment |
SAFETY PRECAUTIONS:
Inhalation: Avoid inhalation of dust. Ensure adequate ventilation during melting operations.
Skin Contact: Not hazardous under normal use; however, dust form may cause skin irritation.
Eye Contact: In case of dust contact, rinse with plenty of water.
Melting: Adequate ventilation should be provided during melting operations. Use local exhaust ventilation or fume hood.
PPE Recommendations: Wear protective gloves (heat-resistant), safety goggles (for dust and splashes), and dust mask or respiratory protection if necessary.
Dust Explosion: Aluminum dust can be explosive; avoid dust formation during processing.
The typical mechanical properties of Al-B alloys obtained by adding AlB master alloy to the final alloy are given below. These values vary depending on boron content, other alloy components, and processing conditions.
| Property | Value Range | Explanation |
|---|---|---|
| Tensile Strength | 100 – 250 MPa | Depends on boron content and alloy composition |
| Yield Strength | 50 – 150 MPa | |
| Elongation (%) | 5 – 25 | Good ductility due to fine grain structure |
| Hardness (HB) | 30 – 60 | |
| Electrical Conductivity | 60 – 63 % IACS | EC grade aluminum level |
| Grain Size | Fine | Significantly refined |
MECHANICAL PROPERTIES EXPLANATION:
When AlB master alloy is added to the final alloy, grain refinement improves mechanical properties. Fine-grained structure provides higher strength through the Hall-Petch relationship and offers a good balance between ductility and strength.
The most important contribution of AlB master alloy is on electrical conductivity. Boron binds conductivity-reducing transition metals (Ti, V, Cr, Mo), improving the electrical conductivity of aluminum to 60-63% IACS levels. This is the standard value for EC grade aluminum. Mechanical properties vary depending on the exact alloy composition and processing conditions.
SUMMARY:
Aluminum-Boron (AlB) master alloy is a pre-alloy containing controlled amounts of boron (0.5-5.0%) within an aluminum matrix. It is supplied in rod, ingot, or granule form. Density is approximately 2.7 g/cm³, and melting point ranges from 600-650°C.
AlB master alloy is used to add boron to aluminum alloys. Boron is used for grain refinement, impurity removal, and improving electrical conductivity in aluminum alloys. It is particularly critical in the production of EC grade aluminum. Boron binds conductivity-reducing transition metals (Ti, V, Cr, Mo), improving the electrical conductivity of aluminum.
Store in dry and cool environment, protected from moisture and direct sunlight. Not hazardous under normal use; however, avoid inhalation of dust and ensure adequate ventilation during melting operations. Personal protective equipment (gloves, safety goggles, dust mask) is recommended.
| Property | Value |
|---|---|
| Product Name | Aluminum-Boron Master Alloy (AlB) |
| Alloy Type | Master alloy, grain refiner, impurity remover |
| Form | Rod, ingot, granule |
| Color | Silver-gray |
| Density | ~2.7 g/cm³ |
| Melting Point | 600 – 650°C |
| B Content | 0.5 – 5.0% (customizable) |
| CAS Numbers | Al: 7429-90-5, B: 7440-42-8 |
| Industry | Applications |
|---|---|
| Electrical | EC grade aluminum, power transmission lines, transformer components |
| Automotive | Lightweight and durable cast parts |
| Aerospace | High-quality casting components |
| Foundry | Grain refinement, casting quality improvement |
| Construction | Structural profiles requiring conductivity and strength |
NOT HAZARDOUS: Not hazardous under normal use
DUST RISK: Avoid inhalation of dust
MELTING: Ensure adequate ventilation during melting operations
PPE: Gloves, safety goggles, dust mask should be used
STORAGE: Store in dry, cool environment away from direct sunlight
Grain Refinement: AlB master alloy significantly refines the grain structure of aluminum alloys. AlB₂ and AlB₁₂ intermetallic phases provide heterogeneous nucleation sites, creating a fine-grained structure. Fine grain structure improves mechanical properties, reduces hot tearing tendency, and enhances casting surface quality.
Impurity Removal and Conductivity Improvement: AlB master alloy precipitates conductivity-reducing transition metals (Ti, V, Cr, Mo) as borides (TiB₂, VB₂, CrB₂, MoB₂). This process improves the electrical conductivity of aluminum to 60-63% IACS levels. Therefore, AlB master alloy is an indispensable additive in EC (Electrical Conductor) grade aluminum production.
Adjustable Boron Content: AlB master alloy can be produced with boron contents ranging from 0.5% to 5% according to customer requirements. As boron percentage increases, grain refinement and impurity removal effectiveness increase. Optimum boron content should be determined according to application requirements (especially conductivity and grain refinement needs).
EC Grade Aluminum: AlB master alloy is critical in the production of EC (Electrical Conductor) grade aluminum. Boron addition improves the electrical conductivity of aluminum, making it ideal for power transmission lines, transformer components, and electrical equipment.
Casting Quality: AlB master alloy improves casting quality by reducing hot tearing tendency and enhancing surface quality. Fine-grained structure improves mechanical properties and dimensional stability of castings.
Aluminum Dust Safety: Aluminum dust generated during processing of AlB alloy can be explosive. Avoid dust formation during processing and take appropriate dust control measures.
IMPORTANT DISCLAIMER: This Technical Data Sheet (TDS) is for informational purposes only and is prepared based on available technical data. The information provided is believed to be accurate. However, the user is solely responsible for determining the product's suitability for their specific applications and for complying with all applicable local, national, and international regulations and safety requirements. For complete safety, storage, handling, transport, waste, and regulatory compliance information, please refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are obligated to test the product in their own processes and applications. All occupational health and safety rules must be observed when working with AlB master alloy.