Molybdenum alloy (TZM) Piercing Mandrel for seamless steel tube producing

Molybdenum alloy (TZM) Piercing Mandrel for seamless steel tube producing TZM Chemical composition:

Main and minor components Min.content(%)
Mo Balance
Ti 1.0-2.0%
Zr 0.1-0.5%
C 0.1-0.5%
Impurities Max.values (%)
Al 0.002
Fe 0.006
Ca 0.002
Ni 0.003
Si 0.003
Mg 0.002
P 0.001

TZM piercing mandrel diameter:15-350 mm,length:20-500 mm.

We could produce TZM piercing mandrel according your requirements and drawing.

Physical properties of TZM piercing mandrel:

Density≥9.8g/cm3

Hardness: HRC 25-29

Thermal conductivity (500ºC) [W/m K] : 127  

Coefficient of thermal expansion αth (500ºC) [10-6 K-1] : 5.5

Modulus of elasticity [GPa] : 320

The physical properties of TZM differ very little from those of pure molybdenum. But small quantities of extremely fine carbides make TZM more resilient than pure molybdenum and give it a higher recrystallization temperature and greater creep resistance.


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