For applications that require high hardness, large wear resistance, corrosion resistance, and high-temperature resistance!
"Super hard balls (super hard spheres)" are used not only for applications such as bearings and ball valves but also as measuring elements. Please use them for applications that require high hardness, wear resistance, corrosion resistance, and high-temperature resistance. We offer a wide variety of types and sizes, allowing you to choose according to your needs. The hardness is HRA90 or higher, and you can specify the diameter in 1μm increments. The diameter tolerance is within 5μ, and the surface roughness is Ra0.3 or lower. 【Features】 ○ This is a standard size of 0.400mm / Price: 324 yen (tax included) ○ Very high hardness at room and high temperatures ○ Significant wear resistance ○ Chemically inert ○ Corrosion resistance ○ Magnetic properties (slightly magnetic) For more details, please contact us or download the catalog.
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basic information
【Physical Properties】 ○Density (g/mm³): 15.0 ○Thermal Conductivity (W/m℃): 100 ○Electrical Resistance (μΩ/cm): 20 ○Coefficient of Linear Expansion (10⁻⁶℃⁻¹): 4.9 (20–400℃) / 5.3 (20–800℃) ○Hardness (HV30): 1600 (Vickers hardness at 20℃) ○Transverse Rupture Strength (N/mm²): 2600 (at 20℃) ○Fracture Toughness (MN/m³/²): 12 (at 20℃) ○Compressive Strength (N/mm²): 6200 (at 20℃) ○Young's Modulus (GPa): 630 ○Poisson's Ratio: 0.21 ○Material Composition →Tungsten Carbide: 93.5–94.5% →Cobalt: 5.5–6.5% (ISO-K20) (Can also be produced with nickel) ●For more details, please contact us or download the catalog.
Price information
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Delivery Time
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Applications/Examples of results
【Applications】 ○ High-performance bearings, high-temperature and high-pressure corrosion-resistant ball valves, measuring elements for various measuring instruments, flow meters, dial gauge measuring elements, inner diameter measurement for wind instruments and expansion, caliber measurement jigs, hardness testers, airless spray guns, ball varnishing, and in environments requiring cleanliness such as food and medical fields. ● For more details, please contact us or download the catalog.
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Download All Catalogs![[Free Sample] Hardness HRA90 or above 'Super Hard Ball (Super Hard Sphere)'](https://image.mono.ipros.com/public/catalog/image_generated/01/901/318236/318236_IPROS4000834946554297385_1.jpg?w=120&h=170)
Company information
Kyoei Shokai Co., Ltd. has been selling measuring tools and cutting tools to specific users since its establishment in 1970. In the modern global economy, we cherish Japanese manufacturing while maintaining the same spirit of fostering communication between people that we had at the time of our founding. We strive to build human relationships and also to enter new business ventures. Even as times change, communication between people remains universal, and we believe that new technologies are merely means to make life and actions more convenient for people. It is essential that we cannot move forward without "trust." Kyoei Shokai aims to prioritize relationships built on trust, with "action and execution" as our foundation, and we wish to cherish the smiles of our customers on the other side of the door.