TZM
TZM (Titanium Zirconium Molybdenum) is a molybdenum-based alloy containing 0.5% titanium, 0.08% zirconium, 0.03% carbon, and molybdenum makes up the balance. By combining small amounts of Ti and Zi, TZM alloy gains a high recrystallization temperature, making TZM twice as strong as pure molybdenum at 1300°C. The optimal doping percentages are 0.4–0.6% of titanium, 0.07-0.12% of zirconium, and 0.01-0.04% of carbon. CHEMETAL USA has decades of experience in producing TZM material using either powder sintering or vacuum arc-casting.
Precise, Controlled TZM Mixing and Sintering CHEMETAL applies high-precision standards to ensure the purity and particle size of the powders used to create TZM. Heating temperature and oxygen/hydrogen content are meticulously controlled during vacuum sintering. Outstanding quality control limits cracking, structural looseness, and high outgassing porosity. In addition, carbide strengthening and resistance to thermal shock fatigue are often enhanced. Attention to exacting standards results in the fine, homogenous microstructure and high performance properties for which CHEMETAL products have become known.
Accurate TZM Thermal Forming CHEMETAL has mastered the fabrication and machining processes made exceedingly difficult by TZM materials’ high ductile-to-brittle transition temperature (remarkably, TZM is brittle at even at room temperature). The forming process must adhere to a strict series of treatments. For example, the Titanium Zirconium Molybdenum plate and sheet must be washed with alkaline detergent after every rolling; stress-released annealing is required at multiple rolling steps, and the forging and extruding of Titanium Zirconium Molybdenum rods must be done at strictly controlled forming rates and pressing temperatures.
TZM Rod | |
| Diameter | 0.029″ (0.75mm) – 5″ (127 mm) |
| Length | 0.15″ (3.81mm) – 48″ (1020mm) |
TZM Plate | |
| Thickness | 0.240”(6 mm) to 3.15”(80 mm) |
| Width | Maximum 22″ (558mm) |
| Length | Maximum 80″ (2000mm) |
TZM Sheet | |
| Thickness | 0.004″ (0.1 mm) to 0.240″ (6 mm) |
| Width | Maximum 26″ (660mm) |
| Length | Maximum 80″ (2000mm) |
| Surface | Ground, Chemical Cleaned, As rolled |
| Composition | Ti 0.5 %, Zr 0.08%, C 0.03%, Mo Balance |
| Standard | ASTM B386 ASTM B387 |
As an ISO certified TZM molybdenum products manufacturer, We are capable of offering various types of TZM molybdenum rods, plates and sheets that all meet a consistently high standard that conforms to ASTM B386 and ASTM B387. We have the capacity to provide a fast lead time and handle large-volume contracts. Download PRODUCT CATALOG to learn more about our Molybdenum products.
TZM Applications
Titanium Zirconium Molybdenum (TZM) alloy is an ideal material for many industrial applications requiring high strength, high-temperature processes, including those common in the aerospace, electronics, and thermal treatment industries. TZM alloy is especially advantageous for work in the 700-1400°C range. TZM alloy is a versatile material for various high-temperature applications. It’s an excellent choice for metal casting molds that require durability, thermal conductivity, and low thermal expansion rates. TZM casting parts are dimensionally stable, resist cracking due to thermal stress, and withstand multiple high-temperature uses. TZM furnace components improve the capabilities of HIP furnaces, and TZM alloy is ideal for X-ray anode targets due to its high-temperature performance and corrosion resistance. TZM hot runner nozzles are an excellent choice for high-temperature, high-pressure injection molding processes, displaying outstanding resistance to heat, corrosion, and oxidation.
TZM Properties
TZM has a wide range of valuable properties in high temperature environments, including high strength, creep resistance, hardness, and low vapor pressure. It also displays a low coefficient of expansion; excellent resistance to heat and corrosion; and good machinability. Compared with pure molybdenum, Titanium Zirconium Molybdenum has a more stable crystalline structure and higher recrystallization temperature. This is due to the small amount of zirconium and titanium doped into the molybdenum substrate. With their extremely fine size, the composite carbides Mo2C, TiC, and ZrC also help refine and restrain the crystalline grain of molybdenum, which in turn helps the alloy become more weldable and creep resistant than pure molybdenum.
More about TZM applications >>>
- Creep Resistance
- High Tensile Strength
- Good Machinability
- High Recrystallization Temperature
- Corrosion Resistance
- Good Weldability
TZM Mechanical and Physical Properties
TZM Molybdenum Physical Properties | TZM Molybdenum Mechanical Properties | ||
| Density | 0.37 lb/in3 10.22 gm/cm3 | Tensile Strength | 110 (760) ksi (Mpa)-RT |
| Melting Point | 4753 °F 2623 °C | Elongation | 15% in 1.0″. |
| Thermal Conductivity | 0.48 Cal/cm2/cm°C/sec | Hardness | 220 dph |
| Specific Heat | 0.073 Cal/gm/°C | ||
| Coefficient of Linear Thermal Expansion | 2.50 micro-in/°F x 10-6 5.20 micro-in/°C x 10-6 | Modules of Elasticity | 46000 ksi 320 gpa |
| Electrical Resistance | 6.85 micro-ohm-cm | ||
TZM Composition
| ELEMENT | CONTENT% |
| Ti | 0.4-0.6 |
| Zr | 0.07-0.12 |
| C | 0.01-0.04 |
| S | ≤ 0.006 |
| Fe | ≤ 0.01 |
| Ni | ≤ 0.005 |
| N | ≤ 0.003 |
| Mo | Balance |
Related Articles
- P/M and Arc-casting Technologies to Manufacture Molybdenum Titanium Zirconium Alloy
- Thin Wall, Small Diameter TZM Tube Fabrication
- TZM Applications in Industries Requiring High-Temperature Resistance
- Physical and Chemical Properties of Pure Molybdenum and Molybdenum Alloys