φ20mm tungsten alloy ball is uniformly hardened and tempered throughout their entire diameter to achieve maximum strength and quality. Ball hardness is controlled within the 60-67 HRC range as measured on parallel flat surfaces. Custom heat treating is available for special hardness and dimensional stability requirements.
By offering optimum quality tungsten alloy ball, Chinatungsten Online has established ourselves as a prominent manufacturer, exporter and supplier of the same. The offered ball is widely admired by the clients due to its attributes like perfect finish, high temperature resistance, etc.
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http://www.tungsten-alloy.com/tungsten-alloy-ball.html