Titanium-Zirconium-Molybdenum TZM Alloy
1. Product Overview
TZM alloy (Titanium-Zirconium-Molybdenum) is a high-performance, molybdenum (Mo)-based alloy enhanced with titanium (Ti), zirconium (Zr), and trace carbon (C). Its unique composition (e.g., Ti 0.4%–0.55%, Zr 0.06%–0.12%, C 0.01%–0.04%) and manufacturing via powder metallurgy or vacuum melting processes grant it superior high-temperature strength, creep resistance, and recrystallization stability compared to pure molybdenum. It is widely used in extreme high-temperature and high-stress environments.
2. Core Performance Advantages
- Outstanding High-Temperature Mechanical Properties
- Maintains high strength at 1200°C–1400°C, with tensile strength exceeding twice that of pure molybdenum.
- Recrystallization temperature up to 1400°C (vs. ~1100°C for pure Mo), ensuring minimal softening during prolonged high-temperature use.
- Exceptional Creep and Fatigue Resistance
- Superior resistance to creep under sustained high-temperature stress, significantly extending component lifespan.
- Balanced Thermophysical Properties
- High thermal conductivity (~140 W/m·K) and low coefficient of thermal expansion (4.9×10⁻⁶/°C) enable rapid heat dissipation and dimensional stability.
- Optimized Machinability and Corrosion Resistance
- Easier to process (forging, rolling, machining) than pure molybdenum, with excellent resistance to molten metals (e.g., zinc, glass) and inert gas environments.
3. Product Specifications and Forms
|
Form |
Size Range |
Typical Applications |
|
Rods/Bars |
Diameter: Φ5mm–Φ200mm |
High-temperature furnace electrodes, aerospace fasteners |
|
Plates/Sheets |
Thickness: 0.1mm–50mm |
Vacuum furnace heat shields, semiconductor carriers |
|
Wires |
Diameter: Φ0.1mm–Φ5mm |
Heating elements, high-temperature springs |
|
Tubes |
Outer Diameter: Φ10mm–Φ150mm |
Heat exchanger pipes, nuclear reactor components |
|
Custom Parts |
Machined per drawings (CNC/EDM) |
Die-casting molds, complex rocket nozzle parts |
Surface Treatment: Polished, ground, sandblasted, coated (optional)
Standards: ASTM B386, ASTM B387, GB/T 3876
4. Typical Application Fields
- Aerospace
- Rocket engine nozzles, gas rudders, high-temperature thermal protection structures.
- High-Temperature Industrial Furnaces
- Heating elements, heat shields, sintering boats (withstands >1600°C).
- Electronics & Semiconductors
- Ion implanter components, sputtering targets, electron tube anodes.
- Mold Manufacturing
- Aluminum/zinc alloy die-casting molds (3–5x lifespan improvement), isostatic pressing molds.
- Nuclear & Medical
- Nuclear reactor structural parts, X-ray targets, radiation shielding components.
5. Key Property Comparison Table
|
Property |
TZM Alloy |
Pure Molybdenum (Reference) |
Unit |
|
Density |
10.15–10.22 |
10.2 |
g/cm³ |
|
Melting Point |
~2620 |
2620 |
°C |
|
Tensile Strength (Room Temp) |
600–900 |
400–600 |
MPa |
|
Tensile Strength (1100°C) |
350–450 |
150–250 |
MPa |
|
Recrystallization Temperature |
1350–1450 |
1100–1200 |
°C |
|
Thermal Conductivity (20°C) |
~140 |
~138 |
W/(m·K) |
|
Thermal Expansion Coefficient (20–1000°C) |
4.9×10⁻⁶ |
5.4×10⁻⁶ |
/°C |
6. Why Choose TZM Alloy?
- Reliability: Maintains structural integrity and functionality under extreme temperatures.
- Cost-Effectiveness: Extends component replacement cycles and reduces maintenance costs.
- Customization: Supports multi-form, multi-size processing for complex operational needs.
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