Top 10 Companies in the Southeast Asia Aluminium Silicon Alloy Industry (2025): Market Leaders Powering Lightweight Innovation

In Business Insights
August 06, 2025

The Southeast Asia Aluminium Silicon Alloy market was valued at US$ 587.2 million in 2023 and is projected to reach US$ 823.5 million by 2030, growing at a Compound Annual Growth Rate (CAGR) of 4.9% during the forecast period (2024-2030). This growth is being driven by soaring demand from automotive, electronics, and aerospace sectors, coupled with Southeast Asia’s strategic position as a global manufacturing hub for advanced alloys.

As industries increasingly adopt aluminum-silicon alloys for their excellent castability, thermal conductivity, and corrosion resistance, leading manufacturers are expanding production capabilities and developing innovative alloy formulations. This analysis profiles the Top 10 Companies in the Southeast Asia Aluminium Silicon Alloy Industry, highlighting their market positions, technological capabilities, and strategic initiatives.


🔟 1. PT Indonesia Asahan Aluminium (Inalum)

Headquarters: Kuala Tanjung, Indonesia
Key Offering: AlSi7Mg, AlSi12, Custom Alloys

As Indonesia’s state-owned aluminum producer, Inalum commands a dominant position with fully integrated operations from bauxite mining to alloy production. The company supplies critical materials to automotive component manufacturers and electronics producers across ASEAN.

Recent Developments:

  • Inaugurated new 50,000-ton capacity alloy production facility in 2023
  • Established technical partnerships with Japanese automotive OEMs
  • Investing $200 million in low-carbon alloy production technologies

Download FREE Sample Report:
Southeast Asia Aluminium Silicon Alloy Market – View in Detailed Research Report


9️⃣ 2. Press Metal Aluminium Holdings Berhad

Headquarters: Kuala Lumpur, Malaysia
Key Offering: AlSi9Cu3, AlSi10Mg, AlSi12

Press Metal operates Southeast Asia’s largest aluminum smelting complex, specializing in high-silicon alloys for thermal management applications in electronics and electric vehicle components.

Recent Developments:

  • Completed Phase 3 expansion increasing annual capacity to 1.08 million metric tons
  • Developing proprietary Al-Si alloys for 5G infrastructure applications
  • Certified supplier to major Japanese and Korean electronics manufacturers

8️⃣ 3. Hydro Extrusion Malaysia

Headquarters: Penang, Malaysia
Key Offering: Precision extruded Al-Si alloys, Custom profiles

The Malaysian subsidiary of Norway’s Norsk Hydro specializes in high-performance aluminum-silicon extruded products for construction, transportation, and industrial applications.

Recent Developments:

  • Opened advanced Technical Center in Penang (2023)
  • Supplying extrusions for Singapore’s Mass Rapid Transit expansion
  • Implementing AI-driven alloy optimization across production lines

7️⃣ 4. ALCOA (Thailand) Limited

Headquarters: Bangkok, Thailand
Key Offering: A356, A413, Modified Al-Si alloys

ALCOA’s Thai operations focus on premium foundry alloys for the automotive and motorcycle industries, leveraging advanced grain refinement technologies.

Recent Developments:

  • $45 million investment in alloy wheel production capacity
  • Pioneering renewable energy-powered alloy production
  • Strategic supply agreements with Thai automotive parts manufacturers

6️⃣ 5. Norsk Hydro Vietnam

Headquarters: Hanoi, Vietnam
Key Offering: AlSi7Mg0.3, AlSi10Mg, Recycled-content alloys

Hydro Vietnam serves the burgeoning demand for lightweight alloys from Vietnam’s rapidly growing electronics and automotive manufacturing sectors.

Recent Developments:

  • Launched CIRCAL recycled Al-Si alloys with 75% post-consumer content
  • Primary supplier to Samsung’s Vietnamese electronics manufacturing plants
  • Expanding capacity to address EV component demand growth

Download FREE Sample Report:
Southeast Asia Aluminium Silicon Alloy Market – View in Detailed Research Report


5️⃣ 6. Singapore Aluminium Alloy Technologies

Headquarters: Singapore
Key Offering: High-purity Al-Si alloys, Aerospace-grade materials

This specialty producer manufactures ultra-high purity aluminum-silicon alloys for semiconductor equipment and aerospace applications, serving global clients from its Singapore facility.

Recent Developments:

  • Developing novel Al-Si formulations for semiconductor wafer processing
  • Certified supplier to Airbus and Boeing MRO facilities in Asia
  • Investing in advanced vacuum casting technology

4️⃣ 7. Thai Aluminum Co., Ltd.

Headquarters: Bangkok, Thailand
Key Offering: ADC12, AlSi10MnMg, Custom die-casting alloys

As Thailand’s leading producer of die-cast aluminum-silicon alloys, the company serves automotive and appliance manufacturers throughout the region.

Recent Developments:

  • Commissioning new 50,000-ton capacity foundry
  • Developing specialized alloys for electric vehicle battery housings
  • Implementing IoT-based quality monitoring systems

3️⃣ 8. PT Selaras Inti Semesta

Headquarters: Jakarta, Indonesia
Key Offering: AlSi7Mg, AlSi12, Recycled alloys

This Indonesian producer emphasizes sustainable aluminum-silicon production using domestic bauxite resources and recycled materials.

Recent Developments:

  • Technical collaboration with Japanese alloy developers
  • Supplying materials for Indonesia’s emerging EV industry
  • Capacity expansion to support national infrastructure projects

2️⃣ 9. Malaysia Metal Works

Headquarters: Selangor, Malaysia
Key Offering: AlSi9Cu3, AlSi10Mg(Fe), Die-casting alloys

With three decades of experience, Malaysia Metal Works supplies precision aluminum-silicon alloys to engineering and automotive sectors across ASEAN.

Recent Developments:

  • Automating production lines with Industry 4.0 technologies
  • Developing advanced thermal management alloys
  • Expanding export markets in neighboring countries

1️⃣ 10. Philippine Aluminum Alloys, Inc.

Headquarters: Manila, Philippines
Key Offering: AlSi12Cu, AlSi5Mg, Foundry alloys

The Philippines’ leading aluminum-silicon alloy producer focuses on construction and industrial applications for both domestic and export markets.

Recent Developments:

  • Modernizing production facilities to enhance product consistency
  • Expanding into aerospace-grade alloy production
  • Developing climate-optimized alloy formulations

Get Full Report Here:
Southeast Asia Aluminium Silicon Alloy Market – View in Detailed Research Report


🌍 Outlook: Emerging Trends and Future Growth Potential

The Southeast Asia aluminum-silicon alloy market is entering a phase of accelerated growth, driven by technological advancements and expanding applications across multiple industries.

📈 Key Market Trends:

  • Rising adoption in electric vehicle component manufacturing
  • Increasing demand for high-silicon content alloys in electronics cooling solutions
  • Growing emphasis on sustainable and recycled-content alloys
  • Technological improvements in alloy refinement and casting processes
  • Regional capacity expansions reducing import dependence

Get Full Report Here:
Southeast Asia Aluminium Silicon Alloy Market – View in Detailed Research Report

The companies profiled represent the vanguard of Southeast Asia’s aluminum-silicon alloy industry, driving innovation and meeting the growing demand for advanced materials that enable lighter, more efficient products across multiple sectors.