We unleash your business potential by maximize the business innovation.
Send EmailAluminum-Bismuth Master Alloy, AlBi, 7429-90-5, 7440-69-9
Product Name: AlBi (Aluminum-Bismuth Master Alloy)
Alloy System: Al-Bi binary alloy system
Primary Use: Enhances machinability in aluminum alloys, provides low-friction properties, density adjustment in special applications
| Parameter | Description |
|---|---|
| Product Name | Aluminum-Bismuth Master Alloy (AlBi) |
| Alloy System | Al-Bi binary alloy |
| Alloy Type | Master alloy, additive alloy |
| Main Components | Aluminum (Al), Bismuth (Bi) |
| Form | Rod, ingot, or granule |
| Color | Silver-gray |
| Primary Application | Machinability enhancing additive for aluminum alloys |
PRODUCT DESCRIPTION AND EXPLANATION:
Aluminum-Bismuth (AlBi) master alloy is a pre-alloy (master alloy) containing controlled amounts of bismuth within an aluminum matrix. Master alloys are concentrated alloys used to add specific elements to aluminum alloys in a controlled and homogeneous manner.
AlBi master alloy is used to add the element bismuth to aluminum-based alloys. Bismuth is added as a component to improve machinability (chip-breaking capability), provide low-friction properties, and adjust density in certain specialty applications. Bismuth functions as a chip breaker in aluminum alloys, promoting the formation of shorter, more brittle chips during machining operations, thereby increasing machining efficiency and improving surface quality.
This master alloy is supplied in rod, ingot, or granule form and can be produced with bismuth contents ranging from 0.5% to 5% according to customer requirements. AlBi master alloy provides a reliable and homogeneous source for adding bismuth to the final alloy in aluminum foundries and alloy manufacturing facilities.
| Element | Content (wt%) | Explanation |
|---|---|---|
| Aluminum (Al) | Balance (~95.0 – 99.5) | Matrix main element |
| Bismuth (Bi) | 0.5 – 5.0 | Active additive element; machinability enhancer |
| Other Impurities | ≤ 0.3 | Iron, silicon, etc. |
CHEMICAL COMPOSITION EXPLANATION:
The chemical composition of AlBi master alloy is designed to contain controlled amounts of bismuth ranging from 0.5% to 5.0% within an aluminum matrix. The bismuth content can be customized according to customer requirements and final application needs. As bismuth percentage increases, the alloy's machinability properties and density increase, but a slight decrease in ductility may be observed. Impurity levels are strictly controlled to ensure alloy quality.
| Property | Value / Range | Unit | Explanation |
|---|---|---|---|
| Form | Rod, ingot, or granule | - | According to customer request |
| Color | Silver-gray | - | Characteristic metallic appearance |
| Density | ~9.8 | g/cm³ | Depends on bismuth content |
| Melting Point | 600 – 650 | °C | Depends on Al-Bi alloy composition |
| Electrical Conductivity | Low | %IACS | Bismuth reduces conductivity |
| Thermal Conductivity | Medium | W/m·K |
PHYSICAL PROPERTIES EXPLANATION:
AlBi master alloy is supplied in rod, ingot, or granule form. It has a silver-gray color with a characteristic metallic appearance. Density varies depending on bismuth content; while pure aluminum has a density of ~2.70 g/cm³, bismuth has a density of ~9.78 g/cm³. As bismuth content increases, the alloy's density increases, typically reaching ~9.8 g/cm³ levels.
The melting point ranges from 600-650°C depending on the exact alloy composition. Bismuth addition lowers the melting point of aluminum (~660°C) slightly. Electrical conductivity decreases with bismuth addition; therefore, AlBi master alloys have limited use in applications requiring high conductivity.
| Property | Evaluation | Explanation |
|---|---|---|
| Machinability Improvement | High | Bismuth functions as a chip breaker |
| Chip Brittleness | Increased | Forms shorter, more brittle chips |
| Coefficient of Friction | Reduced | Provides low-friction properties |
| Density Control | Possible | Density adjustment for special applications |
| Castability | Good | Good fluidity in molten state |
| Homogeneous Distribution | Good | Master alloy ensures homogeneous addition |
FUNCTIONAL PROPERTIES EXPLANATION:
The most important functional property of AlBi master alloy is its ability to enhance machinability (chip-breaking capability) in aluminum alloys. Bismuth acts as an effective chip breaker in aluminum alloys. During machining operations (turning, milling, drilling, etc.), alloys containing bismuth produce shorter and more brittle chips. This prevents chips from wrapping around cutting tools, increases machining efficiency, and improves surface quality.
Bismuth also imparts low-friction properties to the alloy. This characteristic is advantageous for bearing materials and sliding applications. Additionally, bismuth's high density (~9.78 g/cm³) can be utilized to adjust the alloy's overall density, which is valuable for special applications requiring weight balance or specific density.
| Application | Description |
|---|---|
| Machinability Enhancing Additive | Automotive parts, precision mechanical components, aluminum parts requiring machining |
| Low-Friction Applications | Bearing materials, sliding surfaces, automotive engine components |
| Density Control | Special casting applications, components requiring weight balance |
| Electrical and Electronic Applications | Special alloy connectors, soldering applications |
| Defense Industry | Light armored vehicles, special alloy components |
APPLICATION AREAS EXPLANATION:
Machinability Enhancing Additive: AlBi master alloy is used in the production of automotive parts, precision mechanical components, and aluminum parts requiring extensive machining. Bismuth's chip-breaking property increases machining efficiency, extends tool life, and improves surface quality.
Low-Friction Applications: Aluminum alloys containing bismuth can be used in bearing materials, sliding surfaces, and automotive engine components due to their low-friction properties.
Density Control: The high density of bismuth can be used to adjust the overall density of the alloy. This is advantageous for special applications requiring weight balance or specific density.
| Parameter | Information |
|---|---|
| Storage Conditions | Store in dry and cool environment |
| Storage Temperature | Ambient (room temperature) |
| Protection | Protect from moisture; keep away from direct sunlight |
| Shelf Life | Unlimited (under proper storage) |
| Packaging | Rods/ingots: Wooden pallets or metal crates; Granules: Closed containers |
| Transport | According to standard industrial transport rules |
STORAGE AND TRANSPORT EXPLANATION:
AlBi master alloy should be stored in a dry and cool environment, protected from moisture and direct sunlight. 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 | Bismuth vapors may form during melting; adequate ventilation required |
| PPE Requirements | Gloves, safety goggles, appropriate respiratory protection |
| 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: Bismuth vapors may form 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-Bi alloys obtained by adding AlBi master alloy to the final alloy are given below. These values vary depending on bismuth content and other alloy components.
| Property | Value Range | Explanation |
|---|---|---|
| Tensile Strength | 100 – 250 MPa | Depends on bismuth content and heat treatment |
| Yield Strength | 50 – 150 MPa | |
| Elongation (%) | 2 – 10 | Ductility decreases with increasing bismuth content |
| Hardness (HB) | 30 – 60 |
MECHANICAL PROPERTIES EXPLANATION:
When AlBi master alloy is added to the final alloy, bismuth content causes changes in mechanical properties. Bismuth addition slightly reduces tensile strength and hardness while decreasing ductility (elongation). However, this change in properties is balanced by significant improvement in machinability. As bismuth content increases, the alloy becomes more brittle and chip brittleness increases. Mechanical properties may vary depending on the exact alloy composition and applied heat treatment.
SUMMARY:
Aluminum-Bismuth (AlBi) master alloy is a pre-alloy containing controlled amounts of bismuth (0.5-5.0%) within an aluminum matrix. It is supplied in rod, ingot, or granule form. Density is approximately 9.8 g/cm³ depending on bismuth content, and melting point ranges from 600-650°C.
AlBi master alloy is used to add bismuth to aluminum alloys. Bismuth enhances machinability (chip-breaking capability) in aluminum alloys, provides low-friction properties, and enables density adjustment for special applications. Bismuth functions as a chip breaker, increasing machining efficiency.
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) is recommended.
| Property | Value |
|---|---|
| Product Name | Aluminum-Bismuth Master Alloy (AlBi) |
| Alloy Type | Master alloy, additive alloy |
| Form | Rod, ingot, granule |
| Color | Silver-gray |
| Density | ~9.8 g/cm³ (depending on Bi content) |
| Melting Point | 600 – 650°C |
| Bi Content | 0.5 – 5.0% (customizable) |
| Industry | Applications |
|---|---|
| Automotive | Machinability enhancing additive, engine components |
| Precision Mechanics | Aluminum parts requiring machining |
| Bearings and Sliding | Low-friction applications |
| Casting | Special applications requiring density control |
| Electrical/Electronics | Special alloy connectors |
NOT HAZARDOUS: Not hazardous under normal use
DUST RISK: Avoid inhalation of dust
MELTING RISK: Bismuth vapors may form during melting; ensure adequate ventilation
PPE: Gloves, safety goggles, respiratory protection if necessary
STORAGE: Store in dry, cool environment away from direct sunlight
Machinability Enhancer: AlBi master alloy is used to add bismuth to aluminum alloys. Bismuth is an effective chip breaker; it promotes the formation of shorter, more brittle chips during machining, increasing efficiency, extending tool life, and improving surface quality.
Adjustable Bismuth Content: AlBi master alloy can be produced with bismuth contents ranging from 0.5% to 5% according to customer requirements. As bismuth percentage increases, machinability and density increase, but a slight decrease in ductility may be observed.
Density Control: Bismuth's high density (~9.78 g/cm³) can be utilized to adjust the alloy's overall density. This property is advantageous for special applications requiring weight balance or specific density.
Low-Friction Properties: Aluminum alloys containing bismuth are suitable for bearing materials and sliding applications due to their low-friction properties.
Melting Safety: Bismuth vapors may form during melting of AlBi master alloy. Use local exhaust ventilation or fume hood during melting operations and ensure appropriate respiratory protection.
Aluminum Dust Safety: Aluminum dust generated during processing of AlBi 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 AlBi master alloy.