High conductivity Nickel Silicide Strengthened Bronze Alloy for Automotive Powertrain Parts
Nickel Silicide Strengthened Bronze Alloy that has been optimized for automotive powertrain applications. With a combination of high strength, thermal conductivity and friction, wear and corrosion resistance, Nickel Silicide Strengthened Bronze Alloy withstands higher pressures and temperatures in high power density engines.
When used to make intake or exhaust 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.
PERFORMET ALLOY ATTRIBUTES
High conductivity
High strength at elevated temperatures
Corrosion and wear resistance
Good machinability
In high temperature, high-pressure environments, Nickel Silicide Strengthened Bronze Alloy outperforms conventional valve seat, valve guide and piston ring materials.
Nickel Silicide Strengthened Bronze Alloy 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, Nickel Silicide Strengthened Bronze Alloy 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.
Nickel Silicide Strengthened Bronze Alloy Valve Guides
Nickel Silicide Strengthened Bronze Alloy is stronger than silicon bronze, yet gentle on titanium or steel shafts, so when used for valve
guides, Nickel Silicide Strengthened Bronze Alloy reduces blow by and resists deformation or barreling. In the case of sodium filled valves, Nickel Silicide Strengthened Bronze Alloy exhaust valve guides rapidly extract heat from the valve stem.
Nickel Silicide Strengthened Bronze Alloy Intake & Exhaust Valve Seats
Nickel Silicide Strengthened Bronze Alloy maintains its strength even with long exposure to temperatures up to 427°C (800°F). Valve seats made of Nickel Silicide Strengthened Bronze Alloy keep engines on the track running at optimum efficiency longer than those made of other materials . In particular, Nickel Silicide Strengthened Bronze Alloy exhaust valve seats keep the valve-seat interface cooler, extending the life of both components.
HIGH TEMPERATURE NICKEL BERYLLIUM ALLOY 360
Nickel beryllium Alloy 360 (UNS N03360) is age hardened to achieve high levels of strength, hardness and thermal conductivity. Alloy 360 is used for mechanical and electronic components subjected to elevated temperatures up to 700° F / 350° C for short periods of time while maintaining good spring characteristics.
Applications include thermostats, bellows, diaphragms, burn-in and test sockets (BiTS). Nickel beryllium Alloy 360 is a high reliability material used for corrosion resistant Belleville washers in fire protection sprinkler heads.
ADVANTAGES OF ALLOY 360
USMA’s Alloy 360 has high resistance to wear, corrosion, thermal shock and oxidation from room temperature up to 800° F / 425° C. Other advantages include:
Yield strength up to 245 ksi
Excellent formability with stress relaxation less than 5% at 400° F
Fatigue strength (in reverse bending) of 90 ksi at 10 million cycles.