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Send EmailAluminum-Magnesium Master Alloy, AlMg, 7429-90-5, 7439-95-4
Product Name: AlMg (Aluminum-Magnesium Master Alloy)
Alloy System: Al-Mg binary alloy system
Primary Use: Strength-enhancing additive for aluminum alloys, corrosion resistance improvement, lightweight advantage
| Parameter | Description |
|---|---|
| Product Name | Aluminum-Magnesium Master Alloy (AlMg) |
| Alloy System | Al-Mg binary alloy |
| Alloy Type | Master alloy, strength-enhancing additive alloy |
| Main Components | Aluminum (Al), Magnesium (Mg) |
| Form | Rod, ingot, or granule |
| Color | Silver-gray |
| CAS Numbers | Aluminum (Al): 7429-90-5, Magnesium (Mg): 7439-95-4 |
| Primary Application | Lightweight and strength combination, corrosion resistance improvement, alloy control |
PRODUCT DESCRIPTION AND EXPLANATION:
Aluminum-Magnesium (AlMg) master alloy is a pre-alloy (master alloy) containing controlled amounts of magnesium within an aluminum matrix. Master alloys are concentrated alloys used to add specific elements to aluminum alloys in a controlled and homogeneous manner.
AlMg master alloy is used to add the element magnesium to aluminum-based alloys. Magnesium is one of the most important alloying elements in aluminum alloys and is added to enhance both mechanical strength and corrosion resistance. The Al-Mg alloy system forms the basis of the 5xxx series (Al-Mg) and 6xxx series (Al-Mg-Si) aluminum alloys. These alloys are widely used in aerospace, automotive, marine, and construction industries for applications requiring a combination of lightweight and strength.
This master alloy is supplied in rod, ingot, or granule form and can be produced with magnesium contents ranging from 1% to 30% according to customer requirements. AlMg master alloy provides a reliable and homogeneous source for adding magnesium to the final alloy and controlling alloy composition in aluminum foundries and alloy manufacturing facilities.
| Element | CAS No | Content (wt%) | Explanation |
|---|---|---|---|
| Aluminum (Al) | 7429-90-5 | Balance (~70.0 – 99.0) | Matrix main element |
| Magnesium (Mg) | 7439-95-4 | 1.0 – 30.0 | Active additive element; strength enhancer, corrosion resistance, lightweight |
| Other Impurities | - | ≤ 0.3 | Iron, silicon, manganese, etc. |
CHEMICAL COMPOSITION EXPLANATION:
The chemical composition of AlMg master alloy is designed to contain controlled amounts of magnesium ranging from 1% to 30% within an aluminum matrix. The magnesium content can be customized according to customer requirements and final application needs. As magnesium percentage increases, the alloy's mechanical strength and corrosion resistance improve, but some changes in workability may be observed. Impurity levels are strictly controlled to ensure alloy quality. CAS numbers for Aluminum (7429-90-5) and Magnesium (7439-95-4) 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 | 2.6 – 2.7 | g/cm³ | Depends on magnesium content |
| Melting Point | 600 – 650 | °C | Depends on Al-Mg alloy composition |
| Melting Point (Mg) | ~650 | °C | Pure magnesium reference |
| Electrical Conductivity | Low-Medium | %IACS | Magnesium reduces conductivity |
| Thermal Conductivity | Medium | W/m·K |
PHYSICAL PROPERTIES EXPLANATION:
AlMg 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 magnesium content; while pure aluminum has a density of ~2.70 g/cm³, pure magnesium has a density of ~1.74 g/cm³. Since magnesium is lighter than aluminum, increasing magnesium content slightly decreases the alloy's density to the 2.6-2.7 g/cm³ range. This makes AlMg alloys ideal for lightweight applications.
The melting point ranges from 600-650°C depending on the exact alloy composition. Magnesium addition slightly lowers the melting point of aluminum (~660°C). Electrical conductivity decreases with magnesium addition. Thermal conductivity is at a medium level.
| Property | Evaluation | Explanation |
|---|---|---|
| Strength Increase | High | Magnesium increases mechanical strength of aluminum alloys |
| Lightweight | Excellent | Reduces alloy density, providing weight savings |
| Corrosion Resistance | High | Excellent corrosion resistance, especially in marine applications |
| Weldability | Excellent | 5xxx series alloys show excellent weldability |
| Workability | Good | Suitable for machining and forming |
| Castability | Good | Good fluidity in molten state |
| Homogeneous Distribution | Good | Master alloy ensures homogeneous addition |
| Alloy Control | Precise | Magnesium content can be precisely controlled |
FUNCTIONAL PROPERTIES EXPLANATION:
The most important functional property of AlMg master alloy is its ability to provide a combination of lightweight and strength to aluminum alloys. Magnesium has high solubility in aluminum solid solution and imparts strength to the alloy through solid solution strengthening. 5xxx series (Al-Mg) alloys offer good mechanical properties without requiring heat treatment and exhibit excellent weldability.
Magnesium significantly improves the corrosion resistance of aluminum alloys. 5xxx series alloys show excellent corrosion resistance, especially against seawater; therefore, they are widely used in shipbuilding and marine applications. Magnesium also reduces alloy density, providing a lightweight advantage.
AlMg master alloy provides precise alloy control; magnesium content can be precisely adjusted to optimize the final alloy's mechanical properties, corrosion resistance, and weight.
| Application | Description |
|---|---|
| Lightweight and Strength Combination | Aerospace structural parts, automotive bodies, lightweight structural components |
| Corrosion Resistance Development | Marine applications, shipbuilding, coastal structures, chemical tankers |
| 5xxx Series Alloys | Al-Mg (5052, 5083, 5754) high corrosion resistance alloys |
| 6xxx Series Alloys | Al-Mg-Si (6061, 6063, 6082) heat-treatable structural alloys |
| Welded Structures | High weldability alloys, pipelines, pressure vessels |
| Automotive Industry | Body panels, chassis components, lightweight structural parts |
| Aerospace Industry | Aircraft fuselages, interior structural elements |
| Construction Industry | Facade panels, roofing, structural profiles |
| Packaging Industry | Beverage cans, aluminum foil |
APPLICATION AREAS EXPLANATION:
Lightweight and Strength Combination: AlMg master alloy is used in aerospace structural parts, automotive bodies, and lightweight structural components. Magnesium reduces alloy density while increasing strength.
Corrosion Resistance Development: AlMg alloys offer excellent corrosion resistance for marine applications, shipbuilding, coastal structures, and chemical tankers. 5xxx series alloys are particularly resistant to seawater.
5xxx and 6xxx Series Alloys: AlMg master alloy is the fundamental component of 5xxx (Al-Mg) and 6xxx (Al-Mg-Si) series alloys. 5xxx series offers good mechanical properties without heat treatment, while 6xxx series are heat-treatable structural alloys.
Welded Structures: 5xxx series alloys exhibit excellent weldability; therefore, they are widely used in welded structures, pipelines, and pressure vessels.
| 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 magnesium 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:
AlMg master alloy should be stored in a dry and cool environment, protected from moisture and direct sunlight. Due to magnesium 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 | Magnesium vapors may form during melting; adequate ventilation required |
| Fire Risk | Magnesium can be flammable at high temperatures; handle with care |
| PPE Requirements | Gloves, safety goggles, dust mask |
| Dust Explosion Risk | Aluminum and magnesium 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: Magnesium vapors may form during melting operations. Use local exhaust ventilation or fume hood.
Fire: Magnesium can be flammable at high temperatures. DO NOT use water on magnesium fires (explosion risk). Use dry sand, Class D fire extinguisher, or dry salt.
PPE Recommendations: Wear protective gloves (heat-resistant), safety goggles (for dust and splashes), and dust mask or respiratory protection if necessary.
Dust Explosion: Aluminum and magnesium dust can be explosive; avoid dust formation during processing.
The typical mechanical properties of Al-Mg alloys obtained by adding AlMg master alloy to the final alloy are given below. These values vary depending on magnesium content, other alloy components, and processing conditions.
| Property | Value Range | Explanation |
|---|---|---|
| Tensile Strength | 150 – 400+ MPa | Depends on Mg content and alloy composition |
| Yield Strength | 70 – 300+ MPa | |
| Elongation (%) | 5 – 25 | Ductility varies with magnesium content |
| Hardness (HB) | 40 – 100 | |
| Corrosion Resistance | Excellent | Especially in marine environments |
| Weldability | Excellent | 5xxx series alloys |
| Density | 2.66 – 2.73 | g/cm³ (depends on Mg content) |
MECHANICAL PROPERTIES EXPLANATION:
When AlMg master alloy is added to the final alloy, magnesium content causes significant changes in mechanical properties. Magnesium has high solubility in aluminum solid solution and increases alloy strength through solid solution strengthening. 5xxx series (Al-Mg) alloys offer good mechanical properties without requiring heat treatment.
As magnesium content increases, the alloy's tensile strength and hardness increase. 5xxx series alloys offer good mechanical properties combined with excellent corrosion resistance and weldability. 6xxx series (Al-Mg-Si) alloys are heat-treatable structural alloys whose strength can be increased by heat treatment. Magnesium also slightly reduces alloy density, providing a lightweight advantage.
SUMMARY:
Aluminum-Magnesium (AlMg) master alloy is a pre-alloy containing controlled amounts of magnesium (1-30%) within an aluminum matrix. It is supplied in rod, ingot, or granule form. Density ranges from 2.6-2.7 g/cm³, and melting point ranges from 600-650°C.
AlMg master alloy is used to add magnesium to aluminum alloys. Magnesium increases mechanical strength, improves corrosion resistance, and provides a lightweight advantage. It is the fundamental component of 5xxx (Al-Mg) and 6xxx (Al-Mg-Si) series alloys. 5xxx series offers excellent corrosion resistance and weldability, while 6xxx series are heat-treatable structural alloys.
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. Magnesium can be flammable at high temperatures; handle with care. Personal protective equipment (gloves, safety goggles, dust mask) is recommended.
| Property | Value |
|---|---|
| Product Name | Aluminum-Magnesium Master Alloy (AlMg) |
| Alloy Type | Master alloy, strength-enhancing additive alloy |
| Form | Rod, ingot, granule |
| Color | Silver-gray |
| Density | 2.6 – 2.7 g/cm³ (depending on Mg content) |
| Melting Point | 600 – 650°C |
| Mg Content | 1 – 30% (customizable) |
| CAS Numbers | Al: 7429-90-5, Mg: 7439-95-4 |
| Industry | Applications |
|---|---|
| Aerospace | Aircraft fuselages, interior structural elements |
| Automotive | Body panels, chassis components, lightweight structural parts |
| Marine | Shipbuilding, coastal structures, seawater-resistant components |
| Construction | Facade panels, roofing, structural profiles |
| Welded Structures | Pipelines, pressure vessels |
| Packaging | Beverage cans, aluminum foil |
NOT HAZARDOUS: Not hazardous under normal use
DUST RISK: Avoid inhalation of dust
MELTING RISK: Magnesium vapors may form during melting; ensure adequate ventilation
FIRE RISK: Magnesium can be flammable at high temperatures; DO NOT use water
PPE: Gloves, safety goggles, dust mask should be used
STORAGE: Store in dry, cool environment away from direct sunlight
Lightweight and Strength Combination: AlMg master alloy provides a combination of lightweight and strength to aluminum alloys. Since magnesium is lighter than aluminum, it reduces alloy density while increasing strength through solid solution strengthening.
Excellent Corrosion Resistance: AlMg alloys, especially 5xxx series (Al-Mg), offer excellent corrosion resistance against seawater. This provides a critical advantage in high-corrosion applications such as shipbuilding, marine, and coastal structures.
5xxx and 6xxx Series Alloys: AlMg master alloy is the fundamental component of 5xxx (Al-Mg) and 6xxx (Al-Mg-Si) series alloys. 5xxx series offers good mechanical properties without heat treatment and excellent weldability. 6xxx series are heat-treatable structural alloys whose strength can be increased by aging.
Adjustable Magnesium Content: AlMg master alloy can be produced with magnesium contents ranging from 1% to 30% according to customer requirements. As magnesium percentage increases, mechanical strength and corrosion resistance increase. Optimum magnesium content should be determined according to application requirements.
Magnesium Fire Safety: Magnesium can be flammable at high temperatures. When melting or processing AlMg alloy, precautions should be taken against magnesium fire risk. DO NOT use water on magnesium fires (explosion risk). Use dry sand, Class D fire extinguisher, or dry salt.
Aluminum and Magnesium Dust Safety: Aluminum and magnesium dust generated during processing of AlMg 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 AlMg master alloy.