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TZM- Ti-Zr-Mo High Temperature Molybdenum Base Alloy- SCALE STEEL.

12/29/2020

 
​TZM is short name for Ti-Zr-Mo, Titanium- Zirconium - Molybdenum alloy, is a widely used molybdenum - based superalloy.[SCALE STEEL]The melting point of TZM alloy is 2617℃, the boiling point is 4612℃, and the density is 10.22 g/cm3.

Common Preparation Methods:

Arc Melting - Casting Process
After melting pure molybdenum by electric arc, certain Ti, Zr and other alloying elements are added according to the percentage of weight, and then TZM alloy is obtained by conventional casting method.

Powder Metallurgy
After mixing high pure molybdenum powder with TiH2 powder, ZrH2 powder and graphite powder in a uniform proportion, it was formed by isostatic pressing and then sintered at high temperature in a protective atmosphere to obtain TZM blank.The blank is then hot-rolled (forging) at high temperature, annealed at high [SCALE STEEL]temperature, annealed at medium temperature (forging), relieved of stress at medium temperature, and then rolled (forging) at warm temperature, and finally TZM finished material is obtained.

Standaards:
CHINA YS/T 660-2007
GB/T 17792-2014
GB/T 3816-2017 TZM
AMERICA ASTM B386-2003
ASTM B387-2010 363,364[SCALE STEEL]
 
 Chemical Composition(%)
GRADE TZM 363 364
Ti 0.40~0.55 0.40~0.55 0.40~0.55
Zr 0.06~0.12 0.06~0.12 0.06~0.12
Mo REST REST REST
C 0.01~0.04 0.01~0.03 0.01~0.04
Fe ≤0.010 ≤0.010 ≤0.010
Ni ≤0.005 ≤0.002 ≤0.005
Si ≤0.005 ≤0.010 ≤0.005
N ≤0.003 ≤0.002[SCALE STEEL] ≤0.002
O ≤0.080 ≤0.003 ≤0.030
B (0.02) -- --

Performance Characteristics
TZM alloy has the characteristics of high melting point, high strength, high elastic modulus, small linear expansion coefficient, low vapor [SCALE STEEL]pressure, good electrical and thermal conductivity, and strong corrosion resistance.TZM has excellent thermal shock resistance and thermal fatigue resistance in an environment above 1000℃.

Applications
Because of excellent high temperature strength, low temperature ductility and good welding performance, TZM alloy is widely used in [SCALE STEEL]industry for the processing of high temperature structural materials and die materials, and because of its high melting point, string cable expansion coefficient, low vapor pressure, good conductive heat conduction the characteristic such as performance, is widely used in aerospace, military industry and high temperature structural materials, etc.

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