H (Hard: Hard) S (Strong: Strong) BALL! High thermal conductivity.
The "HS Ball" is a low-expansion artificial sand made of alumina with high fire resistance (SK37 or higher) and low thermal expansion rate. The chemical composition of the general characteristics (representative values) is 68.4% Al2O3, 23.9% SiO2, and 3.3% Fe2O3, with a bulk density of 1.8 for loose filling and 1.9 for dense filling. It is characterized by its round shape and smooth particle surface (no irregularities), as well as high thermal conductivity and hardness (old Mohs hardness: 8.5, Vickers hardness: 1400 HV0.5). 【Product Examples】 ■ #10-20: 1.180mm to 0.600mm ■ #20-30: 0.850mm to 0.425mm ■ #140-200: 0.150mm and above ■ #200-300: 0.106mm and above *For more details, please download the PDF or feel free to contact us.
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Global warming caused by carbon dioxide and serious air pollution due to PM2.5 are becoming environmental issues that can no longer be solved by a single country; they are now global problems. Until today, Yamakawa Industries has contributed to the development of related industries, including the casting industry, primarily through various processing of sand resources. However, now that we are faced with such a critical situation on Earth, we must return to our origins once again and, with an unyielding frontier spirit, "pioneer the next new era." With this determination, we must work together to tackle the conservation and regeneration of the global environment. As a specialist in sand, Yamakawa Industries bears part of the social responsibility for the regeneration of limited Earth resources from the standpoint of environmental conservation and effective resource utilization.