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High carbon steel shot is used across a wide range of industries where component fatigue resistance and durability are critical. Its ability to induce deep, uniform compressive stress makes it indispensable in applications involving cyclic loading, high stress, or harsh environments.
Automotive industry relies heavily on high carbon steel shot for peening critical components. Engine valves, springs, and connecting rods are all peened to improve fatigue resistance, as these parts endure millions of cycles of stress during their service life. For example, valve springs in internal combustion engines are peened with S330 (0.85 mm) high carbon steel shot to induce a compressive stress layer of 0.2–0.3 mm, preventing premature failure due to fatigue. Transmission gears are another key application: peening with S230 (0.6 mm) shot improves their resistance to pitting and wear, extending the transmission’s lifespan by 30–50%. High carbon steel shot is also used in the production of suspension components like coil springs and stabilizer bars, where it enhances resistance to stress corrosion cracking—particularly important for vehicles operating in cold climates where road salt is used.
Aerospace industry demands the highest performance from peening media, and high carbon steel shot is the standard for critical components. Aircraft turbine blades, which operate under extreme temperatures and centrifugal forces, are peened with S170 (0.42 mm) shot to create a compressive stress layer that resists crack formation. The shot’s high hardness ensures it can penetrate the blade’s surface, even though turbine blades are made from highstrength nickelbased superalloys. Landing gear components, such as struts and axles, are peened with larger shot (S660, 1.7 mm) to induce deeper stress layers, as these parts must support the aircraft’s weight during takeoff and landing. High carbon steel shot is also used in the peening of fasteners like bolts and rivets, which hold critical structures together—peening improves their resistance to vibrationinduced loosening and fatigue failure.
Power generation industry uses high carbon steel shot to enhance the durability of components in power plants. Turbine blades for steam and gas turbines are peened to resist fatigue and erosion, with S330 or S460 (1.18 mm) shot used depending on the blade size and material. Generator shafts, which operate under high torque and cyclic stress, are peened to prevent crack initiation, extending their service life from 10–15 years to 20–25 years. High carbon steel shot is also used in the maintenance of wind turbine components, such as gearboxes and rotor blades, where peening helps repair microcracks and restore fatigue resistance—critical for wind farms located in remote areas where maintenance is costly.
Heavy equipment manufacturing relies on high carbon steel shot for peening components used in construction, mining, and agriculture. Bulldozer tracks, excavator buckets, and tractor axles are all peened to improve wear resistance and fatigue life, as these parts are subjected to heavy loads and abrasive environments. For example, excavator bucket teeth—made from highstrength alloy steel—are peened with S700 (2.0 mm) shot to induce a compressive stress layer that resists cracking during rock excavation. Mining equipment like conveyor rollers and crusher jaws also benefit from peening, with high carbon steel shot extending their service life by 40–60% compared to unpeened components.
Oil and gas industry uses high carbon steel shot to enhance the reliability of components in drilling and extraction equipment. Drill pipes, which endure high torque and corrosion, are peened to resist stress corrosion cracking—peening with S550 (1.4 mm) shot creates a compressive stress layer that counteracts the tensile stresses caused by drilling. Wellhead valves and connectors, exposed to high pressure and corrosive fluids, are peened to improve their fatigue resistance, ensuring safe and reliable operation for years. Offshore platforms, which face harsh marine environments, use peened components (e.g., structural bolts, risers) to resist corrosion fatigue, with high carbon steel shot ensuring the peening process is effective even on thickwalled components.