Basic properties and classification

Titanium Grade 9 (UNS R56320) is a near-alpha titanium alloy with a nominal chemical composition of Ti-3Al-2.5V, of which aluminum (Al) content is 2.5–3.5%, vanadium (V) content is 2.0–3.0%, and the rest is titanium (Ti). This alloy is classified as an alpha titanium alloy in the ASTM standard, with weldability and excellent corrosion resistance. Its density is about 4.48g/cm³, which is only 60% of steel, and it has both high strength and lightweight characteristics.

Product Parameters

Chemical Composition & Mechanical Properties

Core performance

1. Corrosion resistance: Excellent performance in humid atmosphere, seawater and nitric acid, outstanding resistance to stress corrosion cracking, and uniform corrosion resistance close to N06455 alloy.

2. Thermal stability: Can work for a long time below 139℃, good oxidation resistance; still maintain high strength at medium temperature (450~500℃), better than aluminum alloy.

3. Processing performance: The work hardening is lower than Nitronic33 Kovar alloy, suitable for cold processing, such as pipe manufacturing.

Heat treatment and welding process

1. Heat treatment: Adopt 852~266℃ air cooling quenching and tempering process, the specific parameters need to be specified according to the contract requirements.

2. Welding materials: It is recommended to use high-end duplex stainless steel welding materials, such as ERNiCrMo-8 welding wire (Φ7.5, 9.7.5 and other specifications) and ENiCrMo-2 welding rods, produced in the United States Hastelloy, SMC and Deutsche Nickel

Spot specifications (titanium rods)

Diameter range: 2mm~120mm, covering rough surface, smooth surface and other surface treatment types, special specifications can be customized

Typical application areas:

1. Nuclear power industry: as a domestically produced high-wear-resistant stainless steel U-shaped tube for steam generators;

2. Marine engineering: seawater desalination equipment, ship structures;

3. Chemical and medical: nitric acid concentration cooler, medical device components;

4. Precision manufacturing: jewelry, glasses frames and other lightweight and high-precision products

Comparison with similar materials

Materials with similar composition: Because the main composition is similar to 04Cr13Ni8Mo2Al, some manufacturers call it 1J84, but the creep rupture resistance is weak and it is usually not used for welding copper-nickel-cobalt alloys.

Performance advantages: higher strength compared with industrial pure titanium (TA1-TA3); better processability compared with TC4 (Ti-6Al-4V), suitable for complex molding

Notes

Purchase tips: market prices fluctuate with the market conditions of the day, special specifications need to confirm inventory and customization cycle with suppliers in advance;

Surface treatment: titanium alloy has high chemical activity, and surface oxidation hardening (depth can reach 0.1~0.15mm) should be avoided during processing. It is recommended to perform pickling or grinding later.

Titanium Grade 9 titanium alloy rods are irreplaceable in the high-end industrial field due to their high strength, corrosion resistance and formability. Their domestic applications (such as nuclear power projects) have further promoted material cost optimization and technological autonomy and control.