High density molybdenum Piercing Mandrels
The molybdenum ( TZM ) piercing mandrel is a critical component used for piercing seamless tubes of stainless, alloy steel and high-temperature alloy, etc. It is typically made of a molybdenum alloy (TZM alloy), which has excellent high-temperature strength and oxidation resistance. The high-temperature stability and corrosion resistance of molybdenum (TZM) piercing mandrels make them an essential component in the making seamless tubes process.
Density >9.8g/cm3 ( molybdenum alloy one, density>9.3g/cm3)
Table of Chemical composition (%), Table 1
Types and size range see Table 2
Table 1
|
Elements
|
Content (%)
|
|
Mo
|
See Note
|
|
Ti
|
1.0 ˜ 2.0
|
|
Zr
|
0.1 ˜ 2.0
|
|
C
|
0.1 ˜ 0.5
|
|
Chemical elements / not more than
|
Fe
|
0.0060
|
|
|
Ni
|
0.0030
|
|
|
Al
|
0.0020
|
|
|
Si
|
0.0030
|
|
|
Ca
|
0.0020
|
|
|
Mg
|
0.0020
|
|
|
P
|
0.0010
|
Table 2
|
Diameter
|
Tolerance of diameter
|
Length
|
Tolerance of length
|
Semifinished type
|
|
20-40mm
|
0 to +2mm
|
60-80mm
|
0 to +3mm
|
A type
|
|
45-55mm
|
0 to +2mm
|
80-110mm
|
0 to +3mm
|
A type
|
|
60-80mm
|
0 to +3mm
|
160-200mm
|
0 to +4mm
|
B type
|
|
85-100mm
|
0 to +4mm
|
180-260mm
|
0 to +5mm
|
B type
|
|
110-150mm
|
0 to +5mm
|
200-300mm
|
0 to +6mm
|
B type
|
|
160-250mm
|
0 to +6mm
|
280-350mm
|
0 to +8mm
|
B type
|
