AMS 4901 Grade 2 Titanium Wire

AMS 4901 Grade 2 Titanium Wire Description

What is AMS 4901 Grade 2 Titanium Wire?

AMS 4901 Grade 2 titanium wire is premium aerospace-grade commercially pure titanium material with well-rounded comprehensive performance. It delivers greater strength than Grade 1 titanium wire while maintaining superb ductility and favorable weldability. Rigorous impurity control limits hydrogen content within 0.015% and oxygen content below 0.25%, securing stable internal quality and reliable performance consistency.
Boasting balanced mechanical strength, remarkable formability and exceptional corrosion resistance, it performs steadily in seawater, salt fog and diverse chemical working conditions. Widely adopted as welding filler wire, corrosion-proof fastener, hydraulic pipeline and aircraft structural component, it serves core aerospace scenarios demanding high dependability and anti-corrosion capability.

 

Technical Specifications

Specifications

1.Diameter ranges for Aviation titanium wire

  • Common aviation sizes: φ0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0 mm.
  • Welding wire sizes: φ0.8, 1.0, 1.2, 1.6, 2.0, 2.4, 3.0 mm.
  • Ultra-fine sizes for precision components: φ0.1, 0.15, 0.2, 0.3, 0.4 mm.

2. Basic Product Information

Item

Details

Product name

AMS4901 Grade 2 Titanium Wire

Equivalent

Gr.2 (ASTM), CP Titanium Grade 2

Execution standards

AMS 4901, ASTM B863, GB/T 3623-2022

Supply form

Straight wire, coil wire

Surface condition

Pickled, bright

3.Chemical Composition (Aviation Grade)

Element

Ti

Fe

C

N

H

O

Content%

Balance

≤0.30

≤0.08

≤0.03

≤0.015

≤0.25

4.Mechanical Properties (Annealed Condition)

Condition

Tensile strength (MPa)

Yield strength (MPa)

Elongation (%)

Hardness HV

Annealed (M)

345–510

≥275 

≥ 20

140–180

Cold drawn (Y)

480–620

≥ 400

≥ 10

180–220

5.Physical Properties for Aviation:

Item

Value

Density

4.51 g/cm³ (56% of steel)

Elastic modulus

105GPa

Melting point

~1668 ℃

Thermal expansion

~8.6×10⁻⁶/℃

Thermal conductivity

~16W/(m·K)

Magnetism

Non-magnetic

6.Aviation Environmental Performance:

Item

Performance

Service temperature

From -253 ℃ to 350 ℃

Corrosion resistance

Excellent in seawater, salt spray, fuels, and hydraulic fluids

Weldability

Excellent–ideal for ERTi-2 filler wire

Formability

Good for bending, coiling, and general forming

Aviation Product Features

  • Balanced Properties: Optimal combination of strength, ductility, and formability.
  • High Purity: Titanium content ≥99.2% for consistent performance.
  • Superior Corrosion Resistance: Outstanding in seawater and chemical media.
  • Light Weight: Density only 56% of steel–educes aircraft weight.
  • Non-magnetic: Safe for avionics and sensitive instruments.
  • Excellent Weldability: Widely used as ERTi-2 welding filler wire.
  • Cost-Effective: Most widely used and economical pure titanium grade.

Aviation Applications

  • Airframe structures: Brackets, support wires, cable clamps, ducting.
  • Hydraulic systems: Corrosion-resistant tubing, fittings, and lines.
  • Welding wire: ERTi-2 filler wire for welding titanium components.
  • Fasteners: Rivets, washers, lock wires, nuts for non-high-strength applications.
  • Heat exchangers: Tubing for thermal management systems.
  • Chemical & fuel systems: Piping for fuel, hydraulic fluid, and de-icing fluids.
  • Aircraft skin: Support structures and attachment wires.

Quality Commitment

  • Manufactured in strict accordance with AMS 4901 and ASTM B863 industrial and aerospace specifications.
  • Each batch comes with a complete Material Test Report (MTR) for full traceability.
  • Multi-step quality control includes chemical analysis, mechanical testing, dimensional checks, hydrogen content analysis, and surface inspection.
  • Custom sizes, straightness, surface finishes, and tempers (M, Y) are available on request.
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