Titanium, the solution

for medical applications

Mary Moynihan-Downes OMTEC 2013

titanium.com Performance metal solutions.

Number 1 supplier

to manufacturers of;

• Orthopedic implants

• Fixation

• Bone Screws

• Spine

• Dental

• Maxillofacial

• Trauma

Providing dependable,

quality driven solutions

to customers every

day.

CRITERIA FOR SELECTING METALS IN

MEDICAL APPLICATIONS

Selection Criteria

Biologic Compatibility

Mechanical Properties

Commercial Availability

Economics

Material Selection

Biologic Compatibility

– Osseointegration (interface between bone and implant)

– Corrosion Resistance in body fluids

– No adverse tissue reaction

Material Selection

Mechanical Properties – Strength to Weight ratio – Nonferromagnetic – Fatigue resistance

(tension/compression, rotation/bending, torsion)

– Yield Strength – Low Modulus – Good wear resistance

Material Selection

Commercial Availability – What mill form(s) is the material

available – Is material available via distribution or

only through mill (large volume) – Industry/Mill capacities – Lead times – Are there manufacturing capabilities

to produce parts

Material Selection

Economics

– Raw material must be cost competitive with alternative materials

– Cost competitive – manufacturing

– Life Cycle Cost

Why Titanium is a Great Choice

TITANIUM IS:

Biologically Compatible

Mechanical Properties

Commercially Available

Economically Feasible

Titanium Biologically Compatible

• Corrosion Resistance

– Stable passive layer

• Inert to body fluids

• Osseointegration

Titanium Mechanical Properties

• Density

– ~.163 lbs/cu inch

– Strength to Weight ratio

• Non-Ferromagnetic

– MRI & CT

Titanium Mechanical Properties

• Modulus of Elasticity (aka Young’s modulus)

– How a material will deform/strain under stress

– Often used to determine if a material is suitable for a specific purpose

Titanium Mechanical Properties

• Modulus to be “closer” to that of

natural bone

• Titanium has a lower modulus than other biometals (SS, CoCr) “closer” to that of bone

• Titanium is less rigid, which limits the stress on the bone structure

Titanium Mechanical Properties

• Alloyed Titanium

• Strength

• Heat treatable

• CP Titanium • High ductility

• Formability

Material Density Modulus of Elas

UTS* 2% YS*

6AL4V .160 16.5 130 120

6AL4V Eli .160 15.2-16.8 120 110

316L .287 28 82-96 36-75

CoCr .299 35 150 85

Material Comparison

* ksi

Titanium Commercially Available

• Multiple mill sources/capacity • Multiple Product Forms

– Sheet/Strip – Bar/Billet – Plate – Wire

• Available via distribution networks or mill • Manufacturing Intelligence (machining,

cutting, forming)

6AL4V

6AL4V Eli

Commercially Pure

Others

Medical Grades of Titanium

Grades 1,2,3 4

Titanium – Economics

• “Performance to Cost” Value

• Life Cycle Costs

• Manufacturing Costs

• Scrap value

New Developments

• Continued research and development of new alloys

• Titanium in micro and nano scale devices • Developing fabrication technologies

• On-going process

Thank You