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MoTiZr Alloy Molybdenum Products TZM Alloy Products Rods Plates Bars Sheets
TZM (titanium, zirconium, molybdenum)
Molybdenum\'s prime alloy is TZM. This alloy contains 99.2% min. To 99.5% max. Of Mo, 0.50% Ti and 0.08% Zr with a trace of C for carbide formations. TZM alloy offers twice the strength of pure moly at temperatures over 1300\'C. The recrystallization temperature of TZM is approximately 250\'C higher than moly and it offers better weldability.
The finer grain structure of TZM alloy and the formation of TiC and ZrC in the grain boundaries of the moly inhibit grain growth and the related failure of the base metal as a result of fractures along the grain boundaries. This also gives it better properties for welding. TZM alloy costs approximately 25% more than pure molybdenum and costs only about 5-10% more to machine. For high strength applications such as rocket nozzles, furnace structural components, and forging dies, it can be well worth the cost differential.
TZM alloy is available in sheet and rod form in basically the same size range as moly with the exception of thin foil.
Mechenical Properties of TZM Alloy (Ti0.5/Zr0.1)
|
Mechenical Properties |
Elongation /% |
Modulus of elasticity /GPa |
Yield Strength /MPa |
Tensile Strength /MPa |
Fracture toughness /(MP·m1/2) |
|
Data |
<20 |
320 |
560~1150 |
685 |
5.8~29.6 |
High Temperature Tensile Strength and Elongation of TZM Alloy (Ti0.5/Zr0.08)
|
Temperature /℃ |
Properties |
|
|
Tensile Strength /MPa |
Elongation /% |
|
|
RT |
1140 ~1210 |
7.5~13.0 |
|
1000 |
700 ~720 |
5.2 |
|
1200 |
320 ~360 |
9.0 |
|
1300 |
190 ~210 |
11.5 ~13.5 |
|
1400 |
140 ~170 |
11.0 ~16.0 |
Thermal and Electrical Properties of TZM Alloy (Ti0.5/Zr0.1)
|
Properties |
Coefficient of Thermal Expansion /K-1 (20~100℃) |
Thermal Conductivity W/m·K |
Max Working Temperature in air ℃ |
Electrical Conductivity Ω·m |
|
Data |
5.3X10-6 |
126 |
400 |
(5.3~5.5)X10-8 |
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