The petrochemical industry has long faced challenges from extreme working conditions such as strong acid, high temperature, and high pressure. Traditional 316L stainless steel has a corrosion rate of up to 0.5mm/year in media such as hydrochloric acid and hydrogen sulfide, resulting in short equipment life and high maintenance costs. TC4 titanium alloy, with its high strength, lightweight, and corrosion resistance, is becoming a "key material solution" for scenarios such as oil refining, ethylene cracking, and natural gas desulfurization.

1、 Performance breakthrough

1. Corrosion resistance performance

Hydrochloric acid tolerance: In an environment of 30% hydrochloric acid and 80 ℃, the corrosion rate of TC4 is less than 0.02mm, which is much lower than that of 316L stainless steel;

Resistance to hydrogen sulfide stress corrosion: Under harsh conditions of H ₂ S partial pressure of 0.1MPa and Cl ⁻ concentration of 5 × 10 ⁴ mg/L, TC4 titanium rod remains stable and has no risk of stress corrosion cracking;

Corrosion resistance: The surface hardness reaches HRC36, which can resist high-speed erosion from media containing solid particles.

2. Lightweight and Economic Efficiency

The density is only 4.43g/cm ³, which is 40% lighter than stainless steel of the same specification, reducing equipment load and installation costs;

Extend the service life by more than 15 years and reduce the total lifecycle cost by 30% -50%.

2、 Application scenarios

Refining unit: hydrogenation reactor internals, heat exchanger tube bundles;

Natural gas desulfurization: desulfurization tower packing support, regeneration tower bolts;

Ethylene cracking high-temperature cracking furnace support frame and quench cooler connection parts.

Summary: From "dependence on imports" to "domestic breakthrough", the technological breakthrough of TC4 titanium alloy rods not only solves the "bottleneck" problem in the petrochemical industry, but also promotes the industry's transformation towards high efficiency and low-carbon with lightweight and long-life characteristics.