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PerforMet alloy is a nickel silicide strengthened bronze that has been optimized for automotive powertrain applications. With a combination of high strength, thermal conductivity and friction, wear and corrosion resistance, PerforMet withstands higher pressures and temperatures in high power density engines.

When used to make valve seats, valve guides and piston rings, high conductivity materials allow heat to pass out of critical components, reducing the likelihood of hot spots. The end result is enhanced engine efficiency, higher performance and long-term reliability – all important considerations whether you need to lower emissions while maintaining the performance of on-highway vehicles or to reach the finish line faster on the track.


Read our white paper which was presented at Engine Expo 2017, "Improving Engine Performance with High Performance Alloys." The paper includes data showing how valve seats, valve guides and compression rings made of specialty alloys increase part life and engine efficiency.

Read Our White Paper


  • High conductivity
  • High strength at elevated temperatures
  • Corrosion and wear resistance
  • Good machinability


In high temperature, high-pressure environments, PerforMet outperforms conventional valve seat, valve guide and piston ring materials.

PerforMet™ Piston Rings

Making piston rings from a material with high thermal conductivity allows design changes that dramatically improve the efficiency of internal combustion engines. Thermal modeling has shown that, by efficiently transferring heat from the piston into the cylinder wall, PerforMet piston rings reduce average piston temperatures by 22°C (40°F) and piston crown temperatures by 23°C (41°F).

Benefits include:

  • Reduced end gas temperature: reduced knock sensitivity
  • Reduced piston temperature: longer fatigue life or reduced piston mass
  • Lower top ring groove temperature: enables higher groove position, reducing crevice volume

Combined, these benefits can increase power and torque while lowering fuel consumption.

Download the PerforMet alloy data sheet.

PerforMet™ Valve Guides

Performet is stronger than silicon bronze, yet gentle on titanium or steel shafts, so when used for valve
guides, PerforMet reduces blow by and resists deformation or barreling. In the case of sodium filled valves, PerforMet exhaust valve guides rapidly extract heat from the valve stem.

PerforMet™ Valve Seats

PerforMet maintains its strength even with long exposure to temperatures up to 427°C (800°F). Valve seats made of PerforMet keep engines on the track running at optimum efficiency longer than those made of other materials. In particular, PerforMet exhaust valve seats keep the valve-seat interface cooler, extending the life of both components. 

Talk with our materials engineers
to learn more about PerforMet for your next automotive powertrain application.