Report - BAB II TINJAUAN PUSTAKA 2.1 Besi Cor - eprints.umm.ac.ideprints.umm.ac.id/40640/3/jiptummpp-gdl-zainulmukh-49181-3-babii.pdf · Kekerasan 180 – 302 HB, Hardness Brinell . 9 ...

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