SAE 4140 Hard Chrome Plated Bars

SAE 4140 alloy steel has high fatigue strength and low notch sensitivity, high low temperature impact toughness, no obvious temper brittleness, and is mainly used in the quenched and tempered state. SAE4140 Hard Chrome Plated Rod is used to manufacture high-strength parts and parts with large cross-sections and other stress-bearing components under impact load. Such as high strength Hydraulic cylinder rods, penaumatic cylinder rods, the transmission eccentric shaft of the horizontal forging machine, the crankshaft of the forging press.

1. Industrial machinery
Hydraulic and pneumatic systems: such as hydraulic cylinder piston rods and pneumatic valve stems, which need to withstand high pressure and frequent reciprocating motion.
Transmission system: gear shafts, camshafts, couplings, which require high torsional strength.
Molds and injection molding machines: ejectors and guide pillars, which require high precision and wear resistance.

2. Automobiles and transportation
Drive shafts: withstand engine torque and road impact.
Suspension parts: steering knuckles, suspension links, which need to resist fatigue and impact.
Gearbox gear shafts: wear resistance and deformation resistance at high speeds.

3. Aerospace
Landing gear parts and actuator shafts need to be lightweight and high-strength.

4. Energy and heavy industry
Wind turbine main shafts and mining machinery shafts, which can cope with extreme loads and harsh environments.

Quality control system

• Coating inspection: XRF spectrometer (coating composition), eddy current thickness gauge (thickness consistency)
• Performance test: Rockwell hardness tester (HRC), rotary wear tester (ASTM G99)
• Certification standard: RoHS