TZM Molybdenum | TZM Alloy
TZM, the acronym for Titanium-Zirconium-Molybdenum, adds 0.50% titanium, 0.08% zirconium, and 0.02% carbon to pure Molybdenum. This combination enhances its strength, creep resistance and thermal stability.
TZM Molybdenum Properties and Appearance
With a melting point of 2,623 degrees Celsius (4,753 F) it is used in high temperature applications. TZM has a silvery white appearance, with a hint of gold luster and is part of the corrosion-resistant and high-temperature group.
TZM is more expensive than pure molybdenum, however in appropriate applications this is justified by its increased strength at greater temperatures, a higher recrystallization temperature, improved hardness and good ductility. TZM also exhibits excellent corrosion resistance, making it ideal for use in chemical processing plants as well as the oil and gas industries, whilst its thermal stability and electrical conductivity makes TZM a useful alloy in the semiconductor industry.
In elevated temperature applications, TZM’s higher strength, hardness, creep resistance and ductility ensure it will not weaken or soften. In addition, TZM demonstrates good thermal conductivity, low vapor pressure and is machinable. TZM is recommended for high-strength, high-temperature structures and applications operating between 700 and 1,400 degrees Celsius. It is less prone to delaminating, cracking or breaking compared to pure molybdenum under these extreme conditions. However, like pure molybdenum, TZM begins to oxidize at 400 degrees Celsius and oxides rapidly in atmospheres above 500 degrees Celsius. Despite being similar in strength to pure molybdenum at room temperatures, at high temperatures, exceeding the recrystallization temperature of pure molybdenum (900 to 1,100 degrees Celsius), TZM is much stronger. In load-bearing applications exceeding 1300 degrees Celsius, TZM is twice as strong as pure molybdenum.
TZM is commonly produced by powder metallurgy or arc-cast processes via progressive powder metallurgy techniques with the addition of particle-strengthened carbides and oxides to inhibit grain growth at elevated temperatures. This combination increases the ductility and creep strength of the alloy.
TZM Molybdenum Applications
TZM is commonly used in rocket nozzles, vacuum furnace components, die inserts, heat shields, jet engine exhaust cones, fuel cells, anodes in X-ray tubes, gas pipelines, annealing and sintering, light-alloy casting molds and high temperature structural parts. TZM is useful where demanding mechanical load at temperatures above 900 degrees Celsius, or when recrystallization and embrittlement of pure molybdenum is a concern due to repeated temperature cycling and handling. Industries where TZM is used include:
- Aerospace Industry
- Defence Industry
- Automotive Industry
- Nuclear Industry
- Semiconductors Industry
- Power generation Industry
- Metalworking Industry
- Electronics Industry
TZM Molybdenum Formats Supplied
Vulcan Metal Group is a leading global supplier of Molybdenum TZM in bar, plate, rod, sheet and wire. We can make custom machined and finished parts supplied to print from materials we supply.
Request a quote for TZM alloy or Contact us for more information on how Vulcan Metal Group can help you.
Did You Know
The element Molybdenum was discovered in 1778 by Carl Wilhelm Scheele and isolated in 1781 by Peter Jacob Hjelm.
Later on, in the mid-20th century, scientists sought to enhance molybdenum’s properties for demanding applications. The addition of tiny amounts of titanium (Ti) and zirconium (Zr) along with carbon (C) resulted in the creation of TZM alloy in the 1950s.
Molybdenum TZM alloy, with its unique blend of properties and versatility, continues to push the boundaries of engineering and technology. As research progresses, we can anticipate even more innovative and unexpected applications for this remarkable material. Exploration is ongoing in emerging fields including:
- Additive Manufacturing – Scientists are investigating the use of TZM in 3D printing processes to create complex, high-performance components.
- Energy Storage – TZM’s thermal conductivity and stability could be harnessed in advanced energy storage systems.
- Space Exploration – Its lightweight, high-strength properties make it a potential material for future space exploration missions.
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TZM Molybdenum Key Properties
| Property | Value |
| Chemical Composition | Mo (98%), Ti (0.5%), Zr (0.08%), C (0.03%) |
| Density | 10.22 g/cm³ |
| Melting Point | 2620°C (4748°F) |
| Tensile Strength | 690 MPa at 25°C |
| Yield Strength | 480 MPa at 25°C |
| Elongation at Break | 10% at 25°C |
| Thermal Conductivity | 130 W/m·K at 20°C |
| Specific Heat Capacity | 0.276 J/g·K |
| Coefficient of Thermal Expansion | 5.4 x 10^-6 /°C (20-1000°C) |
| Hardness | 250 HV |
| Electrical Conductivity | 18.7% IAC |
| Modulus of Elasticity | 329 GPa |
Address
Vulcan Metal Group LLC
23888 Madison Street
Torrance, CA 90505
United States
Phone / Fax
Phone: +1 310.882.6841
Fax: +1 310.893.0579
Cage Code
8FCY8
Quality Policy: Vulcan Metal Group, LLC. supplies mission critical, special purpose materials, and products at a competitive price. The company’s quality system is registered to ISO 9001 and AS9100 and follows its principles for the governance of the business. An active continual improvement program and compliance with all applicable OSHA, federal, and state regulations is maintained.
