... magnetic, nontoxicLow thermal expansion coefficientHigh heat transfer capabilityLow elasticity moduleExcellent properties Specification1.)material:gr1,gr2,gr5,gr7,gr9,gr11,etc.2 ... ,ISO 7380,JIS,BSMOQ.100piecesTest and Quality1.ISO 9001:20082.Mechanical properties test.3.inspection ensure the materials meet destructive and non ...