... thermal expansion coefficient Long service span Customization available Metallic substrate has the advantages of fast burning, small ... of Pt, Pd, Rh and metallic element without noble metals. The shape will be round, oval or ... 0.06,0.08,0.103. Specification of metallic substrate: Shapesize(mm)Shapesize(mm)RotundityΦ2.42 ... 5"× 2.75"Note: We can supply Metallic Substrate coated with noble metals of Pt, Pd ...