Titanium Grade 5 (R56400)

What is Titanium Grade 5 and its applications?

Titanium Grade 5 (UNS R56400), or Ti-6Al-4V, is an alpha-beta titanium alloy combining low density with substantially greater strength than commercially pure titanium. It is used in aerospace structures, engineered fasteners and other weight-sensitive mechanical components.

Aerospace structures: Airframe and engine components specified under application-specific material and quality requirements.
Mechanical fasteners: High-strength connections where mass and available space influence the design.
Industrial equipment: Pressure-vessel and other engineered components using a defined Ti-6Al-4V condition.

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Engineering Application & Selection Guide

Aluminum stabilizes the alpha phase and vanadium stabilizes the beta phase. Processing and heat treatment determine the resulting microstructure, so annealed and solution-treated-and-aged material must not share an assumed set of mechanical properties.

Titanium Grade 5 hex bolts — For a weight-sensitive joint, calculate bearing stress, stiffness and fatigue demand along with tensile capacity.
Titanium Grade 5 socket head cap screws — Check the socket geometry and installation method against the specified condition and required preload.
Titanium Grade 5 stud bolts — Record the mating materials, lubricant or coating and operating temperature before establishing a tightening procedure.

Use Grade 2 as a corrosion-led comparison, rather than treating Grade 5 as a universal upgrade. Grade 5 is also distinct from Grade 23 ELI. An aerospace or medical application needs its own specification and qualification; the alloy name does not confer either.

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Titanium Grade 5 Composition

Composition limits · wt.%

ElementWeight %

Ti: Balance
Al: 5.50–6.75%
V: 3.50–4.50%
C: ≤0.08%
H: ≤0.015%
O: ≤0.20%
N: ≤0.05%
Fe: ≤0.40%
Other elements, each: ≤0.10%
Other elements, total: ≤0.40%

ASTM / ASME specifications by product form

Finished-product requirements

Specify the finished-fastener mechanical requirements, condition and inspection separately from the starting-stock specification.

Titanium Grade 5 hex bolt requirements ↗

Fasteners · dimensional references

Product	Reference
Hex bolts	ISO 4014 / ISO 4017 · ASME B18.2.1
Threaded studs	DIN 976-1 · ASME B18.31.2
Hex nuts	ISO 4032 · ASME B18.2.2
Socket head screws	ISO 4762 · ASME B18.3
Flat washers	ISO 7089 / ISO 7090 · ASME B18.21.1
Custom fasteners	Customer drawing

Raw-material specifications

Product form / scope	Reference
Bar & billet · Specify grade, condition and order requirements.	ASTM B348
Plate, sheet & strip	ASTM B265
Forgings	ASTM B381 Grade F-5

Dimensions do not define material or finished-part compliance. Specify the grade, condition and applicable requirements.

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Titanium Grade 5 Mechanical Properties

Reference sample and condition

Data basis: Catalogue reference minimums
Gauge length: A5, as labelled in supplied table

Key properties	Value
Tensile strength	≥895 MPa
0.2% yield strength	≥828 MPa
Elongation	≥10%

Supplied technical reference · Scanned PDF page 7 · printed page 19

Procurement and application guide

Specify the material and final condition

State the heat-treatment condition and required mechanical properties.

Material forms in the technical reference: Bar · Billet · Sheet · Plate · Strip · Forgings.

Define the finished-part acceptance

Include the material or bolting specification, required final condition, dimensions and quantity. State the service medium, temperature and loading where known. Agree the required tests, inspection coverage and acceptance criteria for the finished part.

Start with the information you have

Send a drawing or share the product form and dimensions. Identify any undecided requirements for review rather than copying a typical property value into the purchase order.

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