Runner Stainless｜Reduces Mold Friction by up to 40%

In both metal and plastic mold manufacturing, one of the most common challenges is excessive friction between the mold surface and the molded material, which can lead to uneven material flow or poor surface finish, surface damage on molded parts, accelerated mold wear resulting in shorter tool life, and increased pressure and energy consumption during production.

The Root Cause

Friction arises from rough contact surfaces and insufficient corrosion resistance especially in high-temperature or humid environments such as aluminum and plastic molding. These processes demand materials that are smooth, corrosion-resistant, and dimensionally stable even under continuous operation.

The Solution

Traditionally, manufacturers relied on standard flat stainless sheets like SUS304 or SUS316. While corrosion resistance was adequate, the flow and release performance remained sub-optimal. Yamaichi has therefore developed Runner Stainless, a special stainless steel engineered with a Low Friction Embossed Surface, produced using a proprietary Japanese forming process. The result is a stainless sheet that reduces surface friction by up to 40% compared to conventional flat stainless enabling smoother material flow, faster demolding, and longer mold lifespan.

Key Features of Runner Stainless

• Low Friction Surface — enhances flowability and prevents sticking during molding or casting.
• Embossed Texture — facilitates easy part release and reduces mold adhesion.
• High Corrosion Resistance — ideal for humid or mildly chemical environments.
• Heat and Weather Resistance — maintains surface integrity under temperature fluctuations.
• Excellent Mechanical Strength — suitable for runners, slides, and mold components requiring rigid and stable surfaces.

Why Choose Yamaichi Special Steel (Thailand)

• Certified under ISO 9001:2015
• Supported by Japanese metallurgical engineers overseeing material selection and forming
• Local warehousing and delivery for high-mix, low-volume production
• Custom services available: Cut-to-size / Precision Finish / Surface Treatment

※ For more details, please download the brochure or contact us.

Glossary

• Embossed Surface: A patterned raised texture improving material flow and part release.
• Low Friction Surface: A surface treatment that minimizes frictional resistance.
• High-mix, Low-volume Production: Flexible production for multiple SKUs in small quantities.

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