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Model No: AMS 4956 6Al-4V ELI

AMS 4956 6Al-4V ELI (Grade 23 / UNS R56402) Titanium Welding Wire

ZYTC Alloy supplies AMS 4956 6Al-4V ELI (Grade 23, UNS R56402) titanium welding wire AWS A5.16 ERTi-23 for aerospace turbine, airframe and cryogenic tank welding.
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ZYTC Alloy, a reliable Chinese manufacturer and supplier of premium aerospace-grade titanium alloy materials, provides high-performanceAMS 4956 6Al-4V ELI Titanium Welding Wire (Grade 23 / UNS R56402). Certified to AWS A5.16 ERTi-23 and MSRR9500/78 industry standards, this low-interstitial titanium filler metal is engineered for critical welding applications that demand superior ductility, fracture toughness and fatigue resistance under extreme service conditions. As a refined variant of standard 6Al-4V titanium alloy, ELI grade titanium welding wire is widely trusted for high-end aerospace, cryogenic and power system welding fabrication and repair.
 

Alloy Overview & Core Advantages

6Al-4V ELI (Extra Low Interstitial) Grade 23 titanium welding wire features a similar base chemical composition to conventional 6Al-4V titanium, but with strictly controlled ultra-low levels of interstitial elements including oxygen, nitrogen, carbon and hydrogen. This precise composition optimization significantly enhances weld ductility, low-temperature toughness and fracture resistance, effectively eliminating brittleness risks in critical welded joints. Unlike standard titanium filler wires, AMS 4956 ELI grade wire delivers stable mechanical performance at cryogenic temperatures and under high-cycle fatigue loads, making it the preferred filler metal for high-reliability structural welding projects.

Specifications

ZYTC Alloy’s AMS 4956 titanium welding wire fully complies with global authoritative aerospace and industrial standards:
  • AMS 4956: Aerospace specification for 6Al-4V ELI titanium welding wire
  • AWS A5.16 ERTi-23: Standard titanium filler metal classification
  • MSRR9500/78: Aerospace material qualification standard
  • UNS R56402: Unified material number for Grade 23 titanium alloy

Chemical Composition (wt%)

Element
Content Range
Aluminum (Al)
5.50–6.75
Vanadium (V)
3.50–4.50
Iron (Fe)
≤ 0.25
Carbon (C)
≤ 0.05
Oxygen (O)
≤ 0.13 (Ultra-low interstitial control)
Nitrogen (N)
≤ 0.012
Hydrogen (H)
≤ 0.0012
Titanium (Ti)
Balance

Key Material & Welding Performance

  • Superior Low-Temperature Toughness: Ultra-low interstitial content avoids cold brittleness, maintaining excellent structural integrity for cryogenic service environments.
  • High Fracture & Fatigue Resistance: Welded joints exhibit outstanding anti-crack performance under dynamic load and high-cycle fatigue conditions, suitable for long-term service of aerospace structural parts.
  • Excellent Weldability: Stable arc performance, uniform weld bead formation, low porosity rate, and reliable fusion with 6Al-4V base materials.
  • Lightweight & High Strength: Inherits titanium alloy’s high strength-to-weight ratio, reducing overall structural weight while ensuring welding reliability.
  • Outstanding Corrosion Resistance: Resists oxidation and chemical corrosion in harsh aviation and industrial environments.

Product Availability & Specifications

ZYTC Alloy supplies full-series AMS 4956 6Al-4V ELI titanium welding wire in multiple standard diameters. All products are provided in standardized spool packaging with smooth surface, uniform wire diameter and stable hardness, ensuring consistent welding quality during automated and manual welding processes. Custom diameters, spool weights and precision finished welding wires are available upon customer requirements. Every batch is supported by complete mill test reports (MTR) and full material traceability.

Applications

AMS 4956 Grade 23 ELI titanium welding wire is specially designed for high-standard welding scenarios requiring high ductility and fracture toughness, widely applied in high-end industries worldwide:
  • Aerospace & Aviation 
  • Cryogenic Systems 
  • Defense & Military 
  • High-End Industrial Equipment 

ZYTC Alloy Manufacturing Strength

As a professional Chinese aerospace titanium alloy supplier, ZYTC Alloy strictly controls the whole production process of AMS 4956 titanium welding wire, adopting precision smelting, ultra-purification treatment and standardized finishing processes. We effectively stabilize interstitial element content to ensure consistent low-temperature toughness and welding performance of each batch of products. Our professional technical team provides customized welding guidance, material selection suggestions and after-sales technical support for global clients, meeting strict aerospace and high-end industrial procurement standards.

Contact Us

Contact ZYTC Alloy to obtain detailed datasheets, inspection certificates, stock availability and competitive quotations for AMS 4956 6Al-4V ELI titanium welding wire.
📧 Email: daisy@zytcsteel.com
📲 WhatsApp: +86 17335753350
 
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