Pt-5%Rh DPHhs is an advanced modification of the oxide dispersion hardened alloy Pt-5%Rh DPH. It has been developed primarily as a material for glass fiber bushings and other applications that require a struc tur al material with a very high level of stiffness at service temperature. A particularly interesting application is in the tip-plates of bushings. The good forming and welding characteristics make the material an ideal candidate for plates with both welded and pressed tips where it can be used to advantage as a substitute for the conventional alloys Pt-10%Rh and Pt-20%Rh.
The high creep strength is achieved largely as a result of a substantial increase in the quantity of dispersed oxide phase relative to the standard DPH materials. Pt-5%Rh DPHhs contains approximately 3 percent by volume of the oxide. This reduces the density of the alloy relative to Pt-5%Rh or Pt-5%Rh DPH and thus also reduces the weight of alloy required to make any given component. Precious metal weight reductions typically achieved are in the range of 2 – 3%.
In view of the high strength and stiffness, there are some restrictions on the dimensions of semi-finished products and parts that can be manufactured from Pt-5%Rh DPHhs. We will be pleased to discuss the use of this new material in your components.
