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Jaw crusher jaw plate Material Chemical Composition(%) Mechanical Property C Si Mn Cr Ak/cm HB Mn13Cr2 1.1~1.4 1.7~2.2 12~15 1.7~2.2 >140 ≤220 Mn18Cr2 1.1~1.4 1.7~2.2 17~19 1.8~2.2 >140 ≤230 High ...