Ryobi Develops Recycled Aluminum Alloy Achieving Material Properties Comparable to New Primary Aluminum
Ryobi has developed a recycled aluminum alloy with mechanical properties comparable to new primary aluminum. This enables the use of recycled materials in critical automotive safety parts, contributing to significant CO2 emission reductions. Product samples will be showcased at an exhibition starting May 27.
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- 📰 Published: May 13, 2026 at 20:00
- 🔍 Collected: May 13, 2026 at 11:31
- 🤖 AI Analyzed: May 13, 2026 at 21:32 (10h 0m after Collected)
Ryobi Corporation (hereinafter, "the Company") has developed a recycled aluminum alloy with mechanical properties approaching those of new primary aluminum (AC4CH), aimed at further improving the raw material recycling ratio. This breakthrough makes it possible to adopt recycled aluminum alloys for critical safety parts in automobiles, such as suspension components, which were previously difficult to apply, thereby expecting further reductions in CO2 emissions.
Sample of a steering knuckle made from recycled aluminum alloy (300×240×140mm)
■ Background
Aluminum die-cast products installed in automobiles and other vehicles are highly recyclable and are reused as recycled aluminum alloy after disposal. While new primary aluminum alloys, refined from bauxite, emit approximately 9 tons of CO2 per ton, recycled aluminum alloys emit only about 0.3 tons, demonstrating superior performance in terms of CO2 emission reduction.
The Company group has actively utilized aluminum recycled materials, with approximately 95% of aluminum die-cast products produced domestically using recycled aluminum alloys. However, a challenge existed in that general recycled aluminum alloys had inferior "elongation at break (toughness)" compared to new primary aluminum alloys. This made it difficult to apply them to suspension components such as steering knuckles, which require high toughness.
■ Overview of the Developed Product
To overcome this, the recycled aluminum alloy newly developed by the Company achieves mechanical properties comparable to new primary aluminum, securing the elongation at break required for critical safety parts. This was accomplished by optimizing additives during the alloy manufacturing process, refining the metal structure using the Company's proprietary "GD Squeeze Casting method," and suppressing the occurrence of internal defects.
As a result, it becomes possible to replace new primary aluminum alloys with recycled aluminum alloys in suspension components like steering knuckles, where new primary aluminum alloys were previously indispensable.
Furthermore, this developed product is a material that contributes to compliance with environmental regulations such as the European ELV Regulation (End of Life Vehicles Regulation), which mandates advanced recycling and expanded use of recycled materials in automobiles.
The Company group will continue to strive to be a business entity that provides basic materials required by society.
Product samples cast with the newly developed recycled aluminum alloy will be exhibited at the "Automotive Engineering Exposition 2026" held at Pacifico Yokohama from May 27.
■ Exhibition Overview
Exhibition Name
Automotive Engineering Exposition 2026 YOKOHAMA
Dates
May 27 (Wednesday) – May 29 (Friday), 2026, 10:00 – 17:00
Venue
Pacifico Yokohama Exhibition Hall / North
Our Booth No.
490
Official Website
https://aee.expo-info.jsae.or.jp/ja/yokohama/
Sample of a steering knuckle made from recycled aluminum alloy (300×240×140mm)
■ Background
Aluminum die-cast products installed in automobiles and other vehicles are highly recyclable and are reused as recycled aluminum alloy after disposal. While new primary aluminum alloys, refined from bauxite, emit approximately 9 tons of CO2 per ton, recycled aluminum alloys emit only about 0.3 tons, demonstrating superior performance in terms of CO2 emission reduction.
The Company group has actively utilized aluminum recycled materials, with approximately 95% of aluminum die-cast products produced domestically using recycled aluminum alloys. However, a challenge existed in that general recycled aluminum alloys had inferior "elongation at break (toughness)" compared to new primary aluminum alloys. This made it difficult to apply them to suspension components such as steering knuckles, which require high toughness.
■ Overview of the Developed Product
To overcome this, the recycled aluminum alloy newly developed by the Company achieves mechanical properties comparable to new primary aluminum, securing the elongation at break required for critical safety parts. This was accomplished by optimizing additives during the alloy manufacturing process, refining the metal structure using the Company's proprietary "GD Squeeze Casting method," and suppressing the occurrence of internal defects.
As a result, it becomes possible to replace new primary aluminum alloys with recycled aluminum alloys in suspension components like steering knuckles, where new primary aluminum alloys were previously indispensable.
Furthermore, this developed product is a material that contributes to compliance with environmental regulations such as the European ELV Regulation (End of Life Vehicles Regulation), which mandates advanced recycling and expanded use of recycled materials in automobiles.
The Company group will continue to strive to be a business entity that provides basic materials required by society.
Product samples cast with the newly developed recycled aluminum alloy will be exhibited at the "Automotive Engineering Exposition 2026" held at Pacifico Yokohama from May 27.
■ Exhibition Overview
Exhibition Name
Automotive Engineering Exposition 2026 YOKOHAMA
Dates
May 27 (Wednesday) – May 29 (Friday), 2026, 10:00 – 17:00
Venue
Pacifico Yokohama Exhibition Hall / North
Our Booth No.
490
Official Website
https://aee.expo-info.jsae.or.jp/ja/yokohama/