TC4 Titanium Alloy Bar: The "Main Force" of Corrosion Resistance in the Petrochemical Industry!

1. Corrosion Resistance Performance

   • Hydrochloric Acid Tolerance: In a 30% hydrochloric acid environment at 80°C, the annual corrosion rate of TC4 is <0.02mm, significantly lower than that of 316L stainless steel.

   • Resistance to Hydrogen Sulfide Stress Corrosion: Under harsh conditions with an H₂S partial pressure of 0.1MPa and Cl⁻ concentration of 5*10⁴ mg/L, TC4 titanium bars remain stable with no risk of stress corrosion cracking.

   • Erosion-Corrosion Resistance: With a surface hardness of HRC 36, it can withstand high-speed erosion from media containing solid particles.

2. Lightweight and Economic Benefits

   • Density is only 4.43 g/cm³, reducing weight by 40% compared to stainless steel of the same specifications, thereby lowering equipment load and installation costs.

   • Service life extends by over 15 years, reducing the total lifecycle cost by 30%-50%.

• Refining Units: Internal components of hydrogenation reactors, heat exchanger tube bundles.

• Natural Gas Desulfurization: Packing supports in desulfurization towers, bolts for regeneration towers.

• Ethylene Cracking: Support frames for high-temperature cracking furnaces, connectors for quenchers.

According to the 2024 China Petrochemical Materials Development Blue Book:

• The domestic market size of titanium alloys for petrochemical applications is projected to exceed ¥8 billion by 2025, with TC4 accounting for over 60%.

• Emerging fields such as hydrogen energy and CCUS will drive greater demand for TC4 bars.

Conclusion: From "import dependency" to "domestic breakthrough," the technological advancements in TC4 titanium alloy bars have not only resolved critical "bottleneck" challenges in the petrochemical industry but are also driving the transition toward high-efficiency and low-carbon operations through their lightweight and long-service-life characteristics.