Grade 2 Titanium Tubes: Composition and Multisector Applications Guide

I. Composition Characteristics (The Gold Standard of Commercial Pure Titanium)

Core Composition:

• Titanium content ≥99.3% (typical for commercial pure titanium)

• Key trace element controls:

  • Oxygen (O) ≤0.20% → Strength modifier

  • Iron (Fe) ≤0.30% → Process performance enhancer

  • Other impurities (N/C/H) → Strictly limited trace amounts

Material Properties:
This precise composition gives Grade 2 titanium tubes:

• Excellent corrosion resistance (superior to most stainless steels)

• Moderate mechanical strength (345-483MPa)

• Good formability and workability

II. Typical Applications (Cross-Industry Solutions)

Application Sector	Specific Use Cases	Performance Advantages
Chemical Processing	Reactor piping/Heat exchanger tubes	Resists strong acid/alkali corrosion
Marine Engineering	Desalination equipment/Subsea pipelines	Complete seawater corrosion resistance
Aerospace	Fuel system components	High strength-to-weight ratio + extreme temperature resistance
Medical Devices	Instrument housings/Support frames	Outstanding biocompatibility
Specialty Industries	Electroplating tanks/Precision instrument parts	Dimensional stability + Non-magnetic

Industry Application Tips:

• Chemical sector: Particularly suitable for the chlor-alkali industry, completely resists wet chlorine corrosion

• Marine environment: Documented service life exceeding 30 years

• Medical applications: While not used for load-bearing implants, widely adopted for external medical equipment

III. Material Selection Recommendations

1. Key Parameter Verification

   • Require actual oxygen content test values from suppliers (recommended 0.15-0.20%)

   • Confirm iron content in the optimal 0.20-0.30% range

2. Surface Treatment Options

   • General industry: Pickled finish (most cost-effective)

   • Special requirements: Electropolished (medical-grade surface cleanliness)

3. Application Considerations

   • Avoid use in reducing environments >300°C

   • Require high-purity argon shielding for welding

IV. Performance Comparison Advantages

Comparison Item     Grade 2 Ti   316 SS   Hastelloy
Seawater Resistance ★★★★★       ★★★☆    ★★★★
Specific Strength    76          65       78
(MPa·cm³/g)
Price Index         100          35       280

Material Selection Key Points:
When balancing corrosion resistance, moderate strength, and cost efficiency, Grade 2 titanium tubes provide the most reliable solution.

Engineering Case: A chemical plant extended service life from 2 to 15 years after replacing 316L stainless steel with Grade 2 titanium tubes in nitric acid concentration equipment.