Excerpt:
Titanium Grade 5 / Ti-6Al-4V (UNS R56400) supplier — ASTM B265/B348. The most widely used titanium alloy. Aerospace airframes, medical implants, marine components. 950 MPa min UTS.
Titanium Grade 5 (Ti-6Al-4V) (UNS R56400 / TC4) - High-Strength Alpha-Beta Alloy
Shanghai Hangbo Alloy Group is a leading Source Supplier of Titanium Grade 5 (TC4), providing mission-critical materials for aerospace, marine, and high-precision engineering sectors worldwide.
Overview
Titanium Grade 5 (Ti-6Al-4V, UNS R56400, TC4) is the workhorse of the titanium industry, accounting for roughly half of all titanium produced worldwide. The alpha-beta microstructure developed by aluminum 5.5–6.75% and vanadium 3.5–4.5% delivers an exceptional combination of tensile strength above 895 MPa, fatigue resistance, fracture toughness and corrosion resistance at only 60% of the density of steel. Shanghai Hangbo Alloy Group supplies Grade 5 plate, sheet and strip certified to ASTM B265, plus round bar to ASTM B348, from double- and triple-VAR-melted ingots, with 100% ultrasonic inspection and complete MTC documentation per EN 10204 3.1.
Chemical Composition (ASTM B265, Grade 5)
Chemical composition (wt%) of Titanium Grade 5 (Ti-6Al-4V, UNS R56400) per ASTM B265:
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Aluminum (Al) | 5.5 – 6.75 |
| Vanadium (V) | 3.5 – 4.5 |
| Iron (Fe) | 0.40 max |
| Oxygen (O) | 0.20 max |
| Carbon (C) | 0.08 max |
| Nitrogen (N) | 0.05 max |
| Hydrogen (H) | 0.015 max |
Mechanical Properties (ASTM B265, Grade 5)
Room-temperature mechanical properties (minimum values) of annealed Titanium Grade 5 (Ti-6Al-4V, UNS R56400) per ASTM B265:
| Property | Value |
|---|---|
| Tensile Strength | ≥ 895 MPa |
| Yield Strength (0.2% offset) | ≥ 828 MPa |
| Elongation (in 50 mm) | ≥ 10% |
Applications
Grade 5 is the standard structural titanium for aerospace airframes, landing gear components, turbine blades and high-strength fasteners. In marine and offshore service it is specified for deep-sea pressure housings, submarine components and seawater systems exposed to high dynamic loads. The alloy is equally dominant in medical technology — orthopedic implants, dental roots and surgical instruments — where its biocompatibility and high fatigue strength are proven over decades of clinical use. Energy and motorsport applications include downhole oil and gas tools, racing engine valves and high-performance suspension springs requiring the best strength-to-weight ratio available.
Advanced Production Process
- Melting (VAR): Multiple Vacuum Arc Remelting cycles are employed to eliminate impurities and ensure a homogenous chemical composition.
- Precision Forging: Controlled multi-directional forging optimizes the grain structure, enhancing fatigue resistance and fracture toughness.
- Rolling: Thermomechanical rolling processes achieve precise dimensional accuracy and excellent surface integrity.
- Heat Treatment: Specialized solution treatment and aging (STA) or annealing cycles are performed to tailor the mechanical properties to specific application needs.
Testing & Inspection Excellence
- Chemical Spectrometry: Precise elemental analysis using OES and ICP-MS to verify alloying and interstitial elements.
- Mechanical Testing: Comprehensive evaluation of tensile, yield, and elongation properties at both Room and High Temperatures.
- Ultrasonic Testing (UT): 100% non-destructive inspection (Class A/B) ensures zero internal defects and inclusions.
- Microstructure Evaluation: Verification of fine, uniform grain structure and phase distribution for superior performance.
Quality Control & Traceability
- Certifications: Quality management systems certified to ISO 9001 and AS9100 standards.
- Full Traceability: Heat-to-batch traceability provided with every shipment, supported by Mill Test Certificates (MTC) per EN 10204 3.1.
- Standard Compliance: Strict adherence to global standards including ASTM B348, ASTM B265, AMS 4928, and AMS 4911.
Solving Market Pain Points
- Lead Time: We maintain a strategic inventory of round bars and plates to provide rapid solutions for critical project timelines.
- Consistency: Our integrated manufacturing ensures consistent mechanical properties and chemical stability across different batches.
- Extreme Environment Failure: Our high-purity alloys are engineered to resist failure in high-stress, high-temperature, and corrosive environments.
Deep Application Insights
- Aerospace: Critical for airframe structural components, turbine blades, and high-strength fasteners where weight and strength are paramount.
- Marine: Superior corrosion resistance makes it ideal for underwater sensors, offshore equipment, and submarine pressure hulls.
- Precision Engineering: Extensively used in high-performance automotive parts, medical implants (orthopedic/dental), and precision surgical tools.
Product Form & Standard Table
| Product Form | Standard Reference |
|---|---|
| Round Bar / Rod | ASTM B348, AMS 4928 |
| Plate / Sheet | ASTM B265, AMS 4911 |
| Seamless Pipe / Tube | ASTM B338, ASTM B861 |
| Forgings & Rings | ASTM B381 |
| Wire | ASTM B863, AMS 4967 |
Professional FAQ
Q: What is the main difference between Grade 5 and Grade 2?
A: Grade 5 is an alpha-beta alloy with aluminum and vanadium, offering much higher strength (up to 895 MPa) compared to the commercially pure Grade 2.
Q: Is Grade 5 Titanium biocompatible?
A: Yes, it is widely used for permanent medical implants due to its excellent biocompatibility and high fatigue strength.
Q: How does Shanghai Hangbo ensure the reliability of TC4?
A: Through double or triple VAR melting and 100% ultrasonic testing to eliminate internal defects.
Q: Can Grade 5 be welded?
A: Yes, it is weldable using TIG or laser welding, provided high-purity argon shielding is used to prevent atmospheric contamination.
Q: What are the machining challenges for Grade 5?
A: Its low thermal conductivity requires sharp tools, high coolant flow, and rigid setups to prevent work hardening.
Q: Why choose Shanghai Hangbo for TC4 supply?
A: We provide factory-direct pricing, 100% UT testing, and full traceability for all aerospace-grade materials.
