METAL HARDNESS TESTING EQUIPMENT

Brand Owner (click to sort) Address Description
KING SCAN KING TESTER CORPORATION 308 Schell Lane Phoenixville PA 19460 METAL HARDNESS TESTING EQUIPMENT, NAMELY BRINELL TESTERS;KING SCAN;SCAN;
ROCKSCAN KING TESTER CORPORATION 308 Schell Lane Phoenixville PA 19460 metal hardness testing equipment; namely, indentor type equipment which applies load to an indentor and measures hardness of the metal based on the indentation produced by the given load;ROCK SCAN;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A golf ball comprises a solid core consisting of a center core and an outer core, wherein at least one of cores is made of a rubber composition comprising 100 parts by weight of a base rubber including. 60 to 100% by weight of a polybutadiene containing at least 60% by weight of cis-1,4-bond, having a Mooney viscosity (ML1+4 (100° C.)) of at least 52, and synthesized using a rare-earth catalyst, 10 to 60 parts by weight of an unsaturated carboxylic acid and/or a metal salt thereof, 5 to 80 parts by weight of an-inorganic filler, and an organic peroxide, and wherein the center core has a JIS-C hardness of 40 to 60 on its center and a JIS-C hardness of 55 to 75 on its surface and the difference therebetween is at least 10, the outer core is harder than the surface hardness of the center core, the cross-sectional hardness of 1 mm outside from the border between the center core and the outer core is from 65 to 85 on a JIS-C hardness, the surface of the outer core has a JIS-C hardness of 75 to 95.