Gr12 Titanium Alloy Wire

Gr12 Titanium Alloy Wire Description

Product Introduction

Gr12 titanium alloy wire (ASTM Gr12/UNS R53400) is a near-α alloy with nominal composition Ti-0.3Mo-0.8Ni. Small additions of molybdenum and nickel substantially improve corrosion resistance in reducing acid media, while retaining the excellent formability and weldability of CP titanium. It outperforms unalloyed titanium grades in dilute HCl, dilute H₂SO₄, and high-temperature chloride environments, making it the material of choice for chemical processing, heat exchangers, and marine service. Available from φ0.1 mm to φ6.5 mm, customizable up to φ10.0 mm, as straight wire or coil.

Technical Specifications

Specifications

1. Basic Information

Product Name

Gr12 Titanium Alloy Wire

Grade Equivalents

ASTM Gr12/UNS R53400/TA10

Standards

ASTM B863, ASTM B265, GB/T 3623-2022, JIS H4630

Supply Forms

Straight wire, Coil wire

Surface Conditions

Pickled, Bright finish

Diameter Range

φ0.1-φ6.5 mm; customizable up to φ10.0 mm

Straightness

≤2/1000

2. Chemical Compositions

Ti

Mo

Ni

Fe

O

C

N

H

Total Impurities

Balance

0.20-0.40%

0.60-0.90%

≤0.30%

≤0.25%

≤0.08%

≤0.03%

≤0.015%

≤0.40%

3. Mechanical Properties

Tempers

UTS (MPa)

YS (MPa)

Elongations (%)

Annealed (M)

≥483

≥345

≥18

4. Physical Properties

Properties

Values

Density

4.51 g/cm³

Melting Point

≈1660°C

Coefficient of Thermal Expansion

8.6×10⁻⁶/°C

Thermal Conductivity

≈15 W/(m·K)

Electrical Resistivity

≈0.60 μΩ·m

Magnetic Properties

Non-magnetic

Max. Service Temperature

≤300°C continuous; ≤400°C short-term

Features and Advantages

  • Reducing-acid resistance: Mo and Ni additions provide superior corrosion resistance in dilute HCl and H₂SO₄ compared with CP titanium grades.
  • Crevic corrosion resistance: Excellent resistance in high-temperature chloride media, ideal for heat exchanger service.
  • Good weldability: Comparable to CP titanium;TIG/MIG compatible with dense, uniform welds.
  • Good formability: Retains the cold-working characteristics of α titanium alloys; easy to bend and coil.
  • Lightweight and non-magnetic: Density 4.51 g/cm³, non-magnetic, suited for precision instruments and weight-sensitive designs.
  • Low lifecycle cost: Long corrosion life, significantly lower maintenance costs than stainless and nickel-based alloys.

Performance Solutions

  • 1. Problem: Stainless steel corrodes rapidly in dilute HCl and H₂SO₄, leading to short equipment life.
    Solution: Gr12 titanium wire dramatically outperforms CP titanium and stainless steel in reducing acid resistance. Chemical equipment run time extends 5-10 times.
    2.Problem: CP titanium suffers crevice corrosion in high-temperature chlorides, raising heat ex changer leak risk.
    Solution: Gr12 titanium wire has outstanding crevice corrosion resistance, making it the preferred choice for heat exchanger tube bundles and seals.
    3.Problem: Nickel-based alloys are dense and expensive, increasing equipment weight and fabrication cost。
    Solution: Gr12 titanium wire has a density of 4.51 g/cm³ -48% of nickel alloys with comparable corrosion resistance at a better cost point.
    4.Problem: Aluminum and copper corrode rapidly in acidic chemical media, driving up maintenance costs。
    Solution: Gr12 titanium wire resists a broad range of organic and inorganic acids. Service life in chemical reactors and piping is 5-10 times longer than stainless steel.

Applications

  • 1. Used in heat exchanger tube bundles,condenser tubes, and evaporator screens.In dilute HCl, H₂SO₄, and high-temperature chlorides,service life is 5-10 times that of stainless steel.The benchmark for chemical corrosion protection.
    2. Applied in reactor linings,agitator assemblies,and electrolytic cell components.Resistant to reducing acids and crevice corrosion.Reliable long-term operation.
    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.
    4. TIG/MIG welding of Gr12 titanium equipment,pipelines, and vessels.Weld corrosion resistance matches base metal.High joint strength.
    5. Used in chemical valve bolts, pump shaft connections, and high-pressure vessel seals. Combines corrosion resistance with mechanical strength; low maintenance.
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