Product Introduction
Gr2 titanium wire (ASTM Grade 2/UNS R50400/TA2) is the most widely used CP titanium grade in industry. It offers higher strength than Gr1 while maintaining excellent ductility and weldability. Titanium content ≥99.5% with tightly controlled impurities.
The most balanced and cost-effective choice in the CP titanium range. Available from φ0.1 mm to φ6.5 mm, customizable up to φ10.0 mm, supplied as straight wire or coil.
Technical Specifications
1. Basic Information
|
Parameters |
Values |
|
Product Name |
Gr2 Commercially Pure Titanium Wire |
|
Grade Equivalents |
ASTM Gr2/UNS R50400/TA2 |
|
Standards |
GB/T 3623-2022, ASTM B863, ASTM F136, JIS H4630, ISO 5832-2, GOST 19807 |
|
Supply Form |
Straight wire, Coil wire |
|
Surface Condition |
Pickled, Bright finish |
|
Diameter Range |
φ0.1-φ6.5 mm; customizable up to φ10.0 mm |
|
Straightness |
≤2/1000 |
2. Chemical Composition
|
Ti |
Fe |
C |
N |
H |
O |
Single Impurity |
Total Impurities |
|
Balance |
≤0.30% |
≤0.08% |
≤0.03% |
≤0.015% |
≤0.25% |
<0.10% |
<0.40% |
3. Mechanical Properties
|
Temper |
UTS (MPa) |
YS (MPa) |
Elongation (%) |
|
Annealed (M) |
≥345 |
≥275 |
≥20 |
|
Half-Hard (Y2) |
≥480 |
– |
≥10 |
|
Cold-Drawn (Y) |
≥550 |
– |
≥8 |
4. Physical Properties
|
Properties |
Values |
|
Density |
4.51 g/cm³ (56% of steel) |
|
Melting Point |
≈1668°C |
|
Thermal Expansion |
8.6×10⁻⁶/°C |
|
Thermal Conductivity |
≈15.2 W/(m·K) |
|
Electrical Resistivity |
≈0.57 μΩ·m |
|
Magnetic |
Non-magnetic (weakly paramagnetic) |
|
Max. Service Temp. |
≤300°C continuous; ≤450°C short-term |
|
Cryogenic Limit |
-253°C (LH₂/LOX)-no embrittlement |
Features and Advantages
- Balanced strength and ductility: UTS≥345 MPa annealed, elongation ≥20%, good formability.
- High purity: Titanium ≥99.5% with tightly controlled impurities and consistent batch performance.
- Broad corrosion resistance: Resistant to seawater, salt spray, organic acids, and oxidizing acids.
- Wide temperature range: Reliable from -253°C to 300°C.
- Non-magnetic and biocompatible: Non-toxic, non-sensitizing, suitable for medical and precision instrument use.
- Lightweight: Density 4.51 g/cm³-56% of steel-with strength comparable to stainless steel.
Performance Solutions
-
1. Problem: Stainless steel suffers pitting and stress corrosion cracking in high-chloride environments, leading to short service life and frequent replacement.
Solution: Gr2 titanium wire resists chloride-induced corrosion. Suitable for seawater pipelines, offshore platforms, and high-salinity conditions with significantly longer service life. -
2. Problem: Aluminum and copper corrode rapidly in acidic chemical media, driving up equipment maintenance costs.
Solution: Gr2 titanium wire resists most organic acids and oxidizing acids. Service life in chemical heat exchangers and reactors is 5-10 times longer than stainless steel. - 3. Problem: Common metal wire produces porosity and inclusions when welding titanium equipment, resulting in poor weld quality. Solution: Gr2 titanium wire meets ERTi-2 welding wire specifications. Welds are dense and uniform, suited for titanium equipment, pipelines, and vessel fabrication.
- 4. Problem: Iron-based fasteners and structural parts corrode in marine salt-spray environments, generating high maintenance and replacement costs. Solution: Gr2 titanium wire outperforms 316L stainless steel in salt spray and seawater resistance. Ideal for marine components, subsea equipment, and corrosion-resistant fasteners.
Applications
- 1. Compliant with ERTi-2 specifications. Used for welding titanium equipment, pipelines, vessels, and heat exchangers. Produces clean, dense welds with high joint strength. The standard choice for titanium fabrication in chemical processing, petrochemical, and nuclear industries.
- 2. Applied in heat exchanger tube bundles, electrolytic cell anodes, reactor linings, and corrosion-resistant screens. In hydrochloric acid, nitric acid, and chloride media, service life is 5-10 times longer than stainless steel.
- 3. Suited for desalination pipelines, subsea structural components, marine fasteners, and anti-corrosion mesh. Outperforms 316L stainless steel in salt spray and high-chloride environments with lower maintenance costs.
- 4. Used in surgical instruments, medical contact parts, and in-vitro diagnostic equipment components. Non-toxic and non-sensitizing, compliant with ISO 5832-2. Safe for long-term contact with human tissue.
- 5. Used for sensor leads, non-magnetic springs, precision frames, and shielding components. Non-magnetic properties eliminate interference in sensitive measurements. Fine wire diameter tolerance ±0.02 mm supports miniaturized designs.