Titanium is a low density, high strength, tough, corrosion resistant, silver colored metal. It is twice as strong as aluminum and 45% lighter than steel. It possesses good heat transfer characteristics and does not become magnetized. Titanium has a melting point of 1,725°C. Non-toxic and biocompatible, titanium is often used in the healthcare industry.
Light weight titanium alloys feature enhanced strength, toughness and thermal stability capabilities. They are frequently used for:
- Aircraft structural components
- Automotive connecting rods
- Turbine blades in power plants
- Prosthetic devices
- Disc drives
- Heat exchangers
Master Bond formulates adhesive bonding systems for joining titanium to titanium and titanium to dissimilar substrates.
The chart below shows the average lap shear strength in psi for the Master Bond systems noted for bonding titanium.
*Titanium was roughened and cleaned with acetone.
Consideration for Bonding Titanium - Medical Grade Adhesives
Favorite products include EP30Med, EP42HT-2Med, EP21LV3/5Med, EP21LVMed, EP62-1Med and MasterSil 153Med. Biocompatible, optically clear, two component EP30Med features high strength, rigid bonds. EP42HT-2Med offers thermal stability, cures at room temperatures and withstands exposure to radiation, ETO, chemical and steam sterilization. Flexible, low viscosity epoxy system EP21LV3/5Med fully meets USP Class VI requirements. Another prominent biocompatible product is EP21LVMed. This easy to apply epoxy system has a convenient one to one mix ratio, superior electrical insulation properties and excellent resistance to thermal cycling. Master Bond EP62-1Med is noted for its dimensional stability, resistance to chemicals and Tg >170°C. Serviceable from -60°F to +450°F this compound has a long working life and versatile cure schedule at low temperatures. Addition cured MasterSil 153Med has a paste consistency and meets ISO 10993-5 specifications. It has a soft durometer and is serviceable up to 400°F.
Multiple formulations with different viscosities, colors, cure speeds, hardnesses, strengths, etc. are available for use for bonding titanium.
Select Adhesives Tested for Lap Shear Strength for Bonding Titanium
One part structural epoxy with high bond strength and excellent adhesion to similar and dissimilar substrates, especially composite materials. Requires oven curing at 250-300°F. NASA low outgassing approved. Serviceable from 4k to +400°F. Tough and durable. 85°C/85% RH resistance.
One part, oven cured epoxy system with excellent thermal conductivity and superb resistance to thermal cycling. Primarily used for bonding of heat sinks and sensors where heat transfer is desirable. Serviceable from 4k to +400°F. Convenient processing.
One part, oven curing epoxy system with very good adhesion to a wide range of plastics. Especially well suited for bonding dissimilar plastic materials. Resists -100°F to +350°F. Exceptional toughness. Successfully tested for 1,000 hours at 85°C/85% RH.
High performance aluminum filled epoxy with one to one mix ratio. Excellent bond strength to metal surfaces. Resists many chemicals and thermal cycling. Low shrinkage upon cure. Easy to apply. Flowable paste viscosity. Exceptionally high compressive strength. Superior dimensional stability. Easily machinable. Service operating temperature range from -60°F to +250°F.
Single component toughened epoxy adhesive with good flow properties. Resistant to thermal cycling, mechanical vibration/shock. Tensile lap shear strength 2,800-3,000 psi. T-peel strength 25-30 pli. Cures in 60-75 minutes at 250°F, shorter times at higher temperatures. Successfully tested at 1,000 hours 85°C/85% RH. Serviceable from 4k to +400°F.