Titanium Grade 5 (Ti-6Al-4V, UNS R56400): Round Bars, Seamless Tubes & Plates — Technical Data Sheet

Quick Answer: What Is Titanium Grade 5?

Titanium Grade 5 (Ti-6Al-4V, UNS R56400) (UNS R56400 / W.Nr. 3.7165) is a premier alpha-beta titanium alloy formulated for service environments demanding high mechanical strength and exceptional corrosion resistance. Its high performance stems from the a combination of alpha-stabilizing aluminum (5.5–6.75%) and beta-stabilizing vanadium (3.5–4.5%) within its stable titanium-aluminum-vanadium matrix. It can be used in the annealed condition or solution-treated and aged for higher strength. Operating efficiently from cryogenic temperatures up to approximately 400°C (750°F) for continuous service, Titanium Grade 5 is widely utilized in aerospace airframes and engines, marine hardware, medical implants, and high-performance automotive.

Product Overview

At the atomic level, its hexagonal close-packed (HCP) alpha phase plus body-centered cubic (BCC) beta phase, providing an excellent strength-to-weight ratio. Its primary advantage is an outstanding combination of high strength, low density (4.43 g/cm³), and excellent corrosion resistance, which yields a stable, self-healing titanium dioxide (TiO₂) passive film gives exceptional resistance to seawater, chlorides, and many acids.

Shanghai Hangbo Alloy Group Co., Ltd., established in 2012, stands as a top-tier global manufacturer and supplier of Titanium Grade 5. Operating under a certified ISO 9001:2015 quality management system, we command an export network covering 50+ countries. Our portfolio contains high-precision centerless ground round bars, heavy industrial plates, and high-pressure seamless tubing engineered for critical industrial applications. By managing carbon distribution and grain refinement during melting and forging, we ensure our material provides robust structural performance under severe stress. Every order comes with 100% material traceability and certified documentation, ensuring compliance with strict global engineering standards.

Executive Standards

Shanghai Hangbo Alloy Group Co., Ltd. manufactures Titanium Grade 5 in strict compliance with international technical specifications:

Note: Shanghai Hangbo executes 100% confirmation of chemical compliance using Optical Emission Spectroscopy (OES) for every melt lot.

Chemical Composition

The corrosion-resistant profile of Titanium Grade 5 depends on its exact chemical balance. Chromium ensures high-temperature oxidation resistance, while molybdenum safeguards against localized pitting in chloride environments.

Mechanical Properties

Titanium Grade 5 delivers excellent design allowable stresses. The data below outlines typical properties for annealed stock.

Room-Temperature Mechanical Properties

High-Temperature Performance: Strength Retention Analysis

Titanium Grade 5 retains remarkable mechanical properties under thermal stress, establishing its credentials as a critical superalloy:

How Titanium Grade 5 Is Produced

Round Bar & Forging

• 1. Vacuum Arc Remelting (VAR): double- or triple-melted in vacuum to remove interstitial impurities.
• 2. Hot Forging / Rolling: worked in the alpha-beta field to refine the transformed-beta microstructure.
• 3. Solution Treating & Aging (STA): optional heat treatment for maximum strength.
• 4. Precision Grinding: bars ground to tight tolerances with Ra under 0.8 μm.

Seamless Tube & Pipe

• 1. Billet Piercing & Extrusion: titanium billets extruded into hollows.
• 2. Cold Drawing: precise wall-thickness control.
• 3. Vacuum Annealing: stress relief and ductility restoration in vacuum furnace.
• 4. Defect Testing: hydrostatic and ultrasonic testing per ASTM standards.

Sheet, Plate & Strip

• 1. Hot Rolling: controlled reduction in the alpha-beta range.
• 2. Cold Rolling: precise gauge control within ±0.05 mm.
• 3. Vacuum Annealing: restore ductility and relieve stresses.
• 4. Pickling: acid pickling to remove alpha case and contamination.

Industry Applications: Solving Engineering Challenges

Aerospace

Grade 5 is the workhorse titanium alloy for airframe structures, landing-gear components, and engine compressor discs and blades.

Marine

Its outstanding seawater corrosion resistance makes it ideal for desalination plant components, heat exchangers, and subsea manifolds.

Medical

Widely used for surgical implants such as bone plates, screws, and joint replacements (in the ELI Grade 23 variant for implants).

Automotive / Motorsport

Connecting rods, valves, and suspension components exploit its high strength-to-weight ratio.

Quality Assurance: 7-Stage Zero-Defect Inspection Protocol

Shanghai Hangbo Alloy Group Co., Ltd. deploys an intensive inspection matrix to support a zero-defect mandate across all production lines:

• 1. Chemical verification: OES analysis on every melt batch alongside handheld PMI validation on finished products ensures composition parameters match executive limits.
• 2. Ultrasonic Testing (UT): Performed per ASTM A388 standards across all bars and plates to confirm the absence of inner voids, seams, or gas inclusions.
• 3. Eddy Current Testing (ET): Applied 100% to tubes following ASTM E309 protocols to check surface and sub-surface continuity.
• 4. Hydrostatic Pressure Verification: Tubes undergo hydrostatic tests up to 10,000 PSI to verify wall integrity under high-pressure parameters.
• 5. Mechanical Destructive Testing: Tensile, offset yield, elongation, and Brinell hardness examinations are executed per heat lot to verify strength criteria.
• 6. Dimensional Metrology Check: Digital calipers and computerized laser sensors measure geometry, guaranteeing all diameter, wall, and length tolerances match orders.
• 7. Visual and Microstructure Audit: Surface quality checks are paired with metallographic microscope tests to evaluate grain size (ASTM E112) and phase homogeneity.

All items leave our facilities accompanied by ISO 9001:2015 certification and EN 10204 3.1 Mill Test Certificates. Third-party inspection options through SGS, TUV, or Bureau Veritas (BV) are organized upon customer request.

Frequently asked questions