Which Titanium Alloy Plates Are Suitable for High-Temperature Working Conditions?

Pure titanium plates like Grade 2 and common alpha-beta alloy Grade 5 (Ti-6Al-4V) are ideal for room temperature and medium-temperature environments, but their strength and oxidation resistance will decline obviously when the temperature exceeds 400°C. For continuous high-temperature service, professional high-temperature resistant titanium alloys are the preferred options.

Main High-Temperature Titanium Alloy Grades & Features

ASTM Grade 6 / GB TA7 (Ti-5Al-2.5Sn)This typical alpha titanium alloy is the most widely used entry-level high-temperature grade. It can work stably at a continuous temperature up to 450°C. It boasts excellent thermal stability, outstanding oxidation resistance and great weldability. It will not suffer obvious performance degradation under long-term high-temperature operation. This grade is cost-effective and widely applied to aircraft engine components, industrial high-temperature containers and medium-high temperature flue equipment.

GB TA15 & TC11 SeriesThese near-alpha and alpha-beta high-temperature titanium alloys are designed for higher temperature scenarios. Their maximum continuous working temperature reaches around 500°C. With optimized alloy composition, they maintain high tensile strength and creep resistance under prolonged heat load. They are mainstream materials for aero-engine compressor parts, high-temperature structural components and heavy-duty thermal power equipment.

High-performance Beta Titanium Alloy (e.g. Grade 21 / GB TB8)For parts demanding both high temperature resistance and high strength, this series is a reliable choice. It combines good high-temperature stability and superior comprehensive mechanical properties, suitable for complex structural parts serving in harsh high-temperature environments.

Selection Guidance

For working temperature below 450°C and general high-temperature equipment: Choose Grade 6 / TA7. It balances performance and cost, and is easy for processing and welding.

For long-term service at 450°C to 500°C and key load-bearing components: Select TA15 or TC11. They are specially developed for high-strength high-temperature working conditions.

Avoid using ordinary Grade 2 and Grade 5 titanium plates for long-term high-temperature applications, as they cannot guarantee service life and structural safety.

Summary

When you need titanium plates for high-temperature conditions, alpha-type high-temperature titanium alloys represented by Grade 6 and TA7 are the most practical and versatile choices for most industrial demands. If you have stricter requirements on temperature resistance and structural strength, TA15, TC11 and other professional high-temperature grades are available.

We supply a full range of high-temperature resistant titanium alloy plates with complete inspection certificates. Custom sizes and processing services are supported to meet diverse project requirements worldwide.