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Stahlkugel 20 mm Package unit:20 Test disk 24 x 7 Mikroskopaufnahme der Verschleißspuren auf Test disk 24 x 7 This ceramic ball made of high quality silicon nitride (Si₃N₄) offers an exceptional combination of low density These steel balls with a diameter of 20 mm are ideal for tribological tests in which larger balls are used They offer high hardness and wear resistance and their precise manufacturing ensures accurate and reproducible results in tests that examine friction
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