Aluminum Silicon Ingot, Aluminum-Silicon Alloy, Al-Si Alloy, 7429-90-5

ALUMINUM SILICON INGOT (Al-Si ALLOY / SILUMIN)

PRODUCT IDENTIFICATION INFORMATION

CHEMICAL STRUCTURE

    Aluminum Silicon Alloy (Al-Si)
    
    Eutectic Microstructure
    
    Aluminum Matrix (α-Al) with
    Silicon Phases (Si)
    
          Al           Al
            \         /
             Si --- Si
            /         \
          Al           Al
    
    Al-Si Eutectic Structure
    (Eutectic point at 577°C with 12.6% Si)

Key Components:

• Aluminum (Al): Matrix metal (lightweight, corrosion-resistant)

• Silicon (Si): Alloying element (improves castability, provides strength)

• Eutectic Point: 12.6% Si, 577°C

SECTION 1: CHEMICAL IDENTITY AND DEFINITION

SECTION 2: PHYSICAL AND CHEMICAL PROPERTIES

SECTION 3: ALLOY TYPES AND CLASSIFICATION

Classification by Silicon Content

Standard Al-Si Alloy Grades

SECTION 4: CHEMICAL COMPOSITION (TYPICAL VALUES)

Hypoeutectic Al-Si Alloy (AlSi7Mg - EN AC-42000)

Eutectic Al-Si Alloy (AlSi12 - EN AC-44200)

Hypereutectic Al-Si Alloy (AlSi17Cu4Mg - EN AC-48000)

SECTION 5: PRODUCTION METHODS

Method 1: Melt Alloying (Most Common Method)

• Process: Pure aluminum + Silicon → Melting → Alloying → Casting → Ingot

• Description: Pure aluminum and silicon (or silicon-containing master alloys) are melted; Homogeneous mixing is achieved; Cast into molds to obtain ingots; Most common industrial production method

Method 2: Master Alloy Use

• Process: Al-Si master alloy → Dilution with pure aluminum → Alloy → Casting

• Description: High-silicon master alloy (20-50% Si) is diluted with pure aluminum; Desired silicon content is achieved; Provides more homogeneous distribution

Method 3: Recycling (Scrap Melting)

• Process: Al-Si scrap → Sorting → Melting → Refining → Alloy → Casting

• Description: Al-Si alloy scraps are collected, sorted, and melted; Purified by refining; Composition adjusted; Sustainable production

Method 4: Powder Metallurgy

• Process: Al powder + Si powder → Mixing → Pressing → Sintering → Alloy

• Description: Aluminum and silicon powders are mixed, pressed, and sintered; Used for specialized applications

SECTION 6: FUNCTIONAL PROPERTIES AND MECHANISM OF ACTION

SECTION 7: MAIN APPLICATION AREAS

SECTION 8: QUALITY SPECIFICATIONS (EN AC-42000 / AlSi7Mg)

SECTION 9: TOXICOLOGICAL PROFILE

SECTION 10: GHS CLASSIFICATION AND LABELING

GHS Classification (Compliant with CLP and UN GHS):

Note: Al-Si alloy is generally considered non-hazardous. However, processing dust may cause mechanical irritation.

Signal Word: No signal word required (non-hazardous) or WARNING (optional)

Hazard Pictograms: GHS07 (optional)

Hazard Statements (H-Codes) - if classified:

NFPA 704 Hazard Classification:

SECTION 11: PRECAUTIONARY STATEMENTS (P-CODES)

SECTION 12: FIRST AID MEASURES

SECTION 13: FIREFIGHTING MEASURES

SECTION 14: STORAGE AND SHELF LIFE

SECTION 15: PACKAGING OPTIONS

SECTION 16: TRANSPORT INFORMATION

SECTION 17: REGULATORY STATUS

SECTION 18: OTHER NAMES AND SYNONYMS

SECTION 19: SUMMARY TABLE

SECTION 20: CRITICAL WARNINGS AND BEST PRACTICES

CRITICAL WARNINGS:

• Non-hazardous material but processing dust may cause respiratory irritation.

• Non-combustible. Does not burn. Stable at high temperatures.

• Powder form may be combustible. Avoid dust generation.

• Molten metal contact with water may cause violent reaction (explosion risk). Do not use water for firefighting.

• Excellent castability enables production of complex shapes.

• Alloy selection is critical for application success. Wrong alloy type will negatively affect performance.

• Incompatibilities: Keep away from strong acids, strong bases, and oxidizing agents.

• Hygiene Requirement: Wash hands thoroughly after handling.

BEST PRACTICE RECOMMENDATIONS:

• Automotive Industry: Use AlSi7Mg or AlSi10Mg for engine blocks and cylinder heads; Use hypereutectic AlSi17Cu4Mg for pistons; Provides high strength and lightweight properties.

• Casting Applications: Use eutectic AlSi12 for complex shapes; Suitable for pressure die casting, permanent mold casting, and sand casting; Excellent fluidity.

• Aerospace: Use AlSi7Mg for structural components; High strength-to-weight ratio; Corrosion resistance.

• Electronics: Use AlSi10Mg or AlSi12 for heat sinks; High thermal conductivity; Lightweight.

• Handling: Use in well-ventilated areas; Avoid dust generation; Wear protective gloves and safety goggles (if dust).

• Personal Protective Equipment: Safety goggles, protective clothing, protective gloves (nitrile, neoprene), NIOSH-approved dust mask (if dust).

• Hygiene: Wash hands thoroughly after handling; Do not eat, drink, or smoke when using.

• Storage: Store in cool, dry, well-ventilated area; Protect from moisture; Keep away from acids and bases.

• Spill Response: Avoid dust generation; Vacuum or sweep; Place in closed containers; Do not allow to enter drains or waterways.

• Disposal: Dispose of in accordance with local, regional, and national regulations; Al-Si is recyclable; Recycle where possible.

ALLOY SELECTION GUIDE:

SPECIAL NOTE ON MOLTEN METAL SAFETY:

Important considerations for Al-Si alloy melting and casting operations:

• Water Contact: Molten Al-Si alloy contacting water causes violent steam explosion

• Precaution: All equipment and molds must be dry

• Fire Extinguishing: DO NOT USE WATER; Use dry chemical powder or sand

• Heating: Controlled heating; Avoid overheating

LEGAL DISCLAIMER:

The information provided in this document is based on our current knowledge and experience and is presented in good faith. However, as all conditions of use are beyond our control, this document does not constitute a binding specification or warranty. This Technical Data Sheet is for informational purposes only. Users are responsible for testing suitability for their own applications. For complete safety, storage, handling, transportation, waste, and regulatory compliance information, please refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier.