Introduction

For purchasing teams looking for Ti-6Al-4V Titanium Bar for Aerospace Components suppliers, the key order requirements are grade confirmation, aerospace standard compliance, bar diameter and length tolerance, heat treatment condition, mechanical properties, full material traceability, EN 10204 3.1 MTC, PMI testing, UT testing, surface finish, export packaging and realistic lead time. Ti-6Al-4V titanium bar, also known as Grade 5 titanium or UNS R56400, is widely used for aerospace components because it offers high strength-to-weight ratio, good fatigue resistance, corrosion resistance and reliable performance for machined parts, fasteners, shafts, brackets and structural components.

Ti-6Al-4V is an alpha-beta titanium alloy containing aluminum and vanadium. Compared with commercially pure titanium grades such as Grade 2, Ti-6Al-4V provides much higher tensile strength and yield strength. Compared with stainless steel and nickel alloy materials, it offers significant weight reduction while maintaining good mechanical reliability in demanding aerospace and precision engineering environments.

For aerospace-related procurement, the buyer should not only ask for “titanium bar”. The RFQ should clearly specify Ti-6Al-4V / Grade 5, the required standard such as ASTM B348, AMS 4928 or project-specific specification, the delivery condition, diameter, length, surface finish, testing scope, certificate requirement, packaging method and delivery schedule. This guide explains how to specify Ti-6Al-4V titanium bar, how to verify suppliers and what information should be included in a professional RFQ.

What Is Ti-6Al-4V Titanium Bar?

Ti-6Al-4V Titanium Bar is a high-strength titanium alloy bar made from approximately 6% aluminum and 4% vanadium, with titanium as the balance. It is one of the most widely used titanium alloys in aerospace, medical, marine, automotive, oil and gas, and high-performance industrial applications. In bar form, it is commonly machined into precision components requiring lightweight strength and corrosion resistance.

Ti-6Al-4V titanium bar is available as round bar, forged bar, flat bar, square bar, billet, precision ground bar and custom cut bar. For aerospace components, buyers often require controlled mechanical properties, strict dimensional tolerance, reliable ultrasonic testing, complete heat number traceability and professional export packaging to protect the material during transportation.

Typical Product Data for Ti-6Al-4V Titanium Bar

Item	Details	Buyer Check
Material Name	Ti-6Al-4V Titanium Bar / Grade 5 Titanium Bar	Confirm Grade 5, UNS R56400 and Ti-6Al-4V on MTC and labels
Main Product Forms	Round bar, rod, billet, forged bar, flat bar, square bar, precision ground bar	Confirm product form, diameter, length, tolerance and machining allowance
Common Conditions	Annealed, solution treated, aged, forged, hot worked, stress relieved where required	Condition affects strength, toughness, machining behavior and final component performance
Surface Finish	Black, pickled, peeled, turned, ground, polished, bright	Aerospace machining usually prefers peeled, turned or ground surface
Typical Aerospace Components	Fasteners, shafts, fittings, brackets, pins, rings, connectors and precision machined parts	Confirm whether aerospace AMS standard or customer specification is required

Chemical Composition of Ti-6Al-4V Titanium Bar

The chemical composition of Ti-6Al-4V titanium bar is designed to provide high strength, low density, good corrosion resistance and stable performance in demanding applications. Aluminum is the main alpha stabilizer, while vanadium is a beta stabilizer. Interstitial elements such as oxygen, nitrogen, carbon and hydrogen must be controlled carefully because they affect strength, ductility and toughness.

Element	Typical Requirement	Function / Procurement Check
Titanium (Ti)	Balance	Base metal providing low density, corrosion resistance and high strength-to-weight ratio
Aluminum (Al)	5.50 – 6.75%	Key alpha stabilizer and strengthening element
Vanadium (V)	3.50 – 4.50%	Improves beta phase stability and mechanical strength
Iron (Fe)	Max 0.40%	Controlled residual element affecting strength, toughness and consistency
Oxygen (O)	Max 0.20%	Higher oxygen increases strength but may reduce ductility and toughness
Carbon (C)	Max 0.08%	Controlled interstitial element for stable mechanical performance
Nitrogen (N)	Max 0.05%	Should be controlled to maintain ductility and fatigue performance
Hydrogen (H)	Max 0.015%	Strict control helps reduce hydrogen embrittlement risk

Mechanical Properties of Ti-6Al-4V Titanium Bar

Ti-6Al-4V titanium bar is selected for aerospace components because it provides high tensile strength, high yield strength, good fatigue resistance and excellent strength-to-weight ratio. Mechanical properties vary depending on product diameter, condition, heat treatment, production process and specification. Buyers should check actual test values on the material certificate before production release.

Property	Typical Reference	Aerospace Buyer Note
Tensile Strength	High strength, commonly around 895 MPa minimum depending on standard and condition	Important for brackets, fittings, shafts and load-bearing aerospace components
Yield Strength	Much higher than commercially pure titanium grades	Critical for fasteners, pins and high-load machined parts
Elongation	Moderate ductility compared with commercially pure titanium	Confirm if forming or impact performance is important
Fatigue Resistance	Good for high-performance aerospace components when properly processed	Final machining, surface finish and stress concentration affect fatigue life
Hardness	Higher than Grade 2 titanium	May increase machining difficulty; confirm tooling and cutting allowance
Density	Approx. 4.43 g/cm³	Useful for lightweight design and aerospace weight reduction

Applicable Standards and Equivalent Grades

Ti-6Al-4V titanium bar can be supplied under several standards depending on the industry and final application. Aerospace buyers often require AMS specifications, while industrial buyers may use ASTM B348 or EN references. The standard must be confirmed before quotation because it affects chemical limits, mechanical requirements, testing scope, documentation and price.

Standard / Grade	Description	Common Procurement Use
UNS R56400	UNS designation for Ti-6Al-4V Grade 5 titanium alloy	Material identity and MTC verification
ASTM B348 Grade 5	Titanium and titanium alloy bars and billets	Round bar, rod, billet and forging stock for industrial and aerospace-related machining
AMS 4928	Common aerospace specification for Ti-6Al-4V bar, wire, forgings and rings depending on product requirement	Aerospace components requiring AMS compliance and stricter documentation
EN 3.7165	European material number for Ti-6Al-4V	European drawings, engineering projects and material comparison
Ti-6Al-4V / Grade 5	Common commercial and engineering grade name	Supplier quotation, product label and technical communication
GB TC4	Chinese grade reference for Ti-6Al-4V-type titanium alloy	China-origin titanium supply and export documentation

Selection Checklist and RFQ Fields for Purchasing Teams

A complete RFQ helps suppliers quote quickly and accurately. For Ti-6Al-4V titanium bar used in aerospace components, buyers should provide the standard, condition, size, tolerance, surface finish, testing and packaging requirements clearly. Missing information may cause quotation delays or incorrect material supply.

Recommended RFQ Fields

RFQ Field	What to Specify	Why It Matters
Grade	Ti-6Al-4V / Grade 5 / UNS R56400	Avoids confusion with Grade 2, Grade 23 or other titanium grades
Standard	ASTM B348, AMS 4928, EN 3.7165 or customer drawing	Determines certificate, inspection and acceptance requirements
Size	Diameter, length, tolerance, straightness and cut length	Important for machining yield and final component accuracy
Condition	Annealed, forged, hot worked, stress relieved or customer-specified condition	Condition affects mechanical properties and machining behavior
Surface Finish	Black, pickled, peeled, turned, ground, polished or bright	Controls machining allowance and surface quality
Certificate	EN 10204 3.1 MTC, AMS compliance, third-party inspection if required	Supports inspection, traceability and aerospace procurement approval
Quantity and Delivery Term	Pieces, meters, kilograms, FOB, CIF, FCA or other shipping terms	Affects price, packing, freight and lead time

Quality Testing and Material Traceability

For aerospace component raw materials, traceability is essential. Ti-6Al-4V titanium bar should be supplied with matching heat number information on the bar marking, labels, packing list and EN 10204 3.1 MTC. Buyers should confirm chemical analysis, mechanical test results, dimensional inspection, UT testing and PMI testing when required by specification or internal quality procedures.

Supplier Verification and Inspection Checklist

Inspection / Document Item	What to Check	Why It Matters
EN 10204 3.1 MTC	Grade, UNS number, standard, heat number, chemical composition, mechanical properties and size	Confirms batch-specific quality and supports aerospace documentation
Heat Number Control	Heat number on bar, label, packing list and MTC must match	Prevents mixed material and supports full material traceability
PMI Testing	Verify Ti base and alloying elements such as Al and V	Helps confirm correct Ti-6Al-4V material and avoid wrong-grade supply
UT Testing	Check internal soundness for bars and billets where required	Important for aerospace components, shafts, fasteners and precision machined parts
Dimensional Inspection	Diameter, length, straightness, tolerance, roundness and cut end quality	Ensures machining and component production requirements are met
Surface Inspection	Check scratches, cracks, pits, oxidation, peeling marks and grinding defects	Important for fatigue-sensitive aerospace machining applications
Third-party Inspection	SGS, BV, TUV, Intertek or customer-appointed inspection before shipment	Provides additional confidence for export orders and critical projects

Comparison With Similar Titanium Materials

Ti-6Al-4V titanium bar is often compared with Grade 2, Grade 23, Grade 9 and other titanium alloys. The best choice depends on required strength, corrosion resistance, biocompatibility, toughness, fatigue performance, standard compliance and cost target.

Material	Strength	Corrosion Resistance	Cost Level	Best-use Recommendation
Grade 2 Titanium	Medium for commercially pure titanium	Excellent	Usually lower than Grade 5	Chemical processing, heat exchangers, marine equipment and welded parts
Grade 5 Ti-6Al-4V	High	Good	Higher than commercially pure titanium	Aerospace components, fasteners, shafts, brackets and precision machined parts
Grade 23 Ti-6Al-4V ELI	High	Good	High	Medical implants and high-toughness applications requiring ELI control
Grade 9 Ti-3Al-2.5V	Medium to high	Good	Moderate to high	Tubing, hydraulic systems, lightweight structures and sports components

Industrial Applications of Ti-6Al-4V Titanium Bar

Ti-6Al-4V titanium bar is a preferred raw material for aerospace components and high-performance industrial parts. It is especially useful when the design requires high strength, low weight, corrosion resistance and reliable fatigue performance.

Industry / Application	Typical Components	Why Ti-6Al-4V Is Used
Aerospace	Fasteners, shafts, fittings, brackets, pins, rings and precision machined parts	High strength-to-weight ratio and fatigue resistance
Defense and Aviation Equipment	Structural connectors, lightweight housings, rods and high-strength components	Reliable performance under high load and weight-sensitive design conditions
Medical and Precision Machining	Instrument parts, rods, screws and CNC machined components	High strength, corrosion resistance and good biocompatibility; implants may require Grade 23
Marine Engineering	Bolts, shafts, pump components, connectors and high-strength marine hardware	Good corrosion resistance and higher strength than commercially pure titanium
Motorsport and High-performance Equipment	Bolts, shafts, rods, spacers, connectors and lightweight machined parts	Excellent lightweight strength and machining performance
Industrial Machinery	Shafts, pins, support rods, high-strength blocks and custom components	High strength, corrosion resistance and long service life in demanding applications

Why Choose Ti-6Al-4V Titanium Bar for Aerospace Components?

Ti-6Al-4V titanium bar is chosen for aerospace components because it provides a strong combination of mechanical strength, low density, corrosion resistance, fatigue resistance and proven industry use. It can reduce component weight compared with steel while maintaining high performance under load.

Selection Checklist for Buyers

Checklist Item	Recommended Action
Confirm Grade	Specify Ti-6Al-4V / Grade 5 / UNS R56400 clearly
Confirm Standard	State ASTM B348, AMS 4928, EN 3.7165 or project-specific standard
Check MTC and Heat Number	Request EN 10204 3.1 MTC and matching heat number labels
Confirm Size and Tolerance	Define diameter, length, straightness, roundness and cut tolerance
Confirm Testing	Request PMI, UT, mechanical testing and third-party inspection if required
Confirm Packaging and Lead Time	Ask for export packing, marking method, stock status and realistic delivery schedule

Common Buyer Mistakes

Common mistakes include ordering “titanium bar” without specifying Grade 5, using industrial ASTM B348 when AMS material is required, accepting incomplete MTC documents, ignoring UT requirements, not confirming surface finish, and assuming Grade 5 is the same as Grade 23 for implant applications. Aerospace purchasing teams should confirm all specification details before ordering.

Packaging, Lead Time and Export Delivery

Ti-6Al-4V titanium bars should be packed to prevent scratches, dents, oxidation, contamination and deformation. Common export packaging includes plastic wrapping, waterproof paper, wooden cases, wooden pallets, bundled bars, end protection and clear labels showing grade, standard, heat number, size and quantity.

Lead time depends on grade, standard, diameter, quantity, condition, surface finish, testing scope and stock availability. Standard sizes may be available faster, while AMS-specified material, large diameter bars, precision ground bars or third-party inspection orders may require additional production and inspection time.

Related Titanium Products

SAKY ALLOY supplies Ti-6Al-4V titanium bar and related titanium products for aerospace, medical, marine, chemical processing, oil and gas, industrial machinery and precision machining applications. Buyers can select product forms according to drawings, standards and final component requirements.

Product	Common Grades	Typical Use
Titanium Bar	Grade 1, Grade 2, Grade 5, Grade 7, Grade 9, Grade 23	Aerospace components, shafts, fasteners, CNC parts, valve parts and medical-related components
Titanium Plate	Grade 1, Grade 2, Grade 5, Grade 7, Grade 12	Aerospace plates, chemical equipment, marine plates and industrial structures
Titanium Pipe and Tube	Grade 1, Grade 2, Grade 7, Grade 9, Grade 12	Heat exchangers, condensers, chemical piping, marine systems and process equipment
Titanium Wire	Grade 1, Grade 2, Grade 5, Grade 23	Medical wire, welding wire, springs, mesh, fasteners and precision wire products
Titanium Forging	Grade 2, Grade 5, Grade 23 and project-specific grades	Forged rings, discs, blocks, shafts and high-strength aerospace custom components

FAQ About Ti-6Al-4V Titanium Bar for Aerospace Components

1. What is Ti-6Al-4V titanium bar used for in aerospace?

Ti-6Al-4V titanium bar is used for aerospace fasteners, shafts, brackets, pins, fittings, rings, structural connectors and precision machined parts. It is selected because it offers high strength-to-weight ratio, good fatigue resistance and corrosion resistance.

2. Is Ti-6Al-4V the same as Grade 5 titanium?

Yes, Ti-6Al-4V is commonly known as Grade 5 titanium and is identified as UNS R56400. Buyers should confirm the exact standard, such as ASTM B348 or AMS 4928, because standard requirements can differ by application.

3. What standard should aerospace buyers request?

Aerospace buyers often request AMS specifications such as AMS 4928, depending on product form and project requirements. ASTM B348 Grade 5 is also widely used for titanium bars and billets. The correct standard should match the drawing or purchase specification.

4. What certificate should be supplied?

Buyers should request EN 10204 3.1 MTC showing grade, UNS number, standard, heat number, chemical composition, mechanical properties, size and delivery condition. For aerospace projects, AMS compliance, UT testing and third-party inspection may also be required.

5. Can Ti-6Al-4V titanium bar be welded?

Ti-6Al-4V can be welded with proper procedures, shielding and contamination control, but it is generally more demanding than commercially pure titanium. For aerospace components, welding should follow qualified procedures and project-specific requirements.

6. What information is needed for a fast quotation?

A complete RFQ should include grade, standard, diameter, length, quantity, tolerance, surface finish, condition, testing requirement, certificate requirement, destination port and packing requirement. For example: AMS 4928 Ti-6Al-4V titanium round bar, diameter 25 mm, length 3000 mm, peeled surface, EN 10204 3.1 MTC and UT testing required.

Conclusion

Ti-6Al-4V Titanium Bar is one of the most important titanium materials for aerospace components because it combines high strength, low density, good fatigue resistance and corrosion resistance. It is widely used for fasteners, shafts, brackets, fittings, pins, rings and precision machined aerospace parts.

For successful procurement, purchasing teams should confirm Grade 5 / UNS R56400, applicable ASTM or AMS standard, bar size, tolerance, surface finish, condition, EN 10204 3.1 MTC, heat number control, PMI testing, UT testing, dimensional inspection, packaging and delivery schedule. A professional titanium supplier should help buyers verify specifications, provide complete documentation and support stable delivery for aerospace component manufacturing.