... 2007,GB/T etc.SurfacePolishedFeaturesLow density,high specific strength,high corrosion resistance, good thermal stability and plasticity ... inside the products. Besides , chemical composition, mechanical properties and high-powered organization are also strictly controlled, ... >200~230+/-7.0+/-2.53)Mechanical properties gradeMechanical properties in room temperatureTensile strengthRm/MpaProvision of non- ...