Molybdenum rods

High-performance grades are available for furnace components, heaters, etc.
It is available not only as molybdenum wires but also as bars. Leveraging its high melting point and easier processability compared to tungsten, molybdenum wires are primarily used for high-temperature furnace components. Various wire diameters and finishes can be provided to suit specific applications. Additionally, we offer materials with enhanced performance through the addition of trace elements (TEM), benefiting from our integrated production system from raw materials to finished products.

Applications Lightings, Electrodes, High-temperature furnace components, Probe pins, etc.

Materials guide

MOP It is the most conventional pure molybdenum material, exhibiting a high melting point, high-temperature strength, good thermal conductivity, a low coefficient of thermal expansion, and excellent workability.
MOS The MOS type improved coiling properties and an working range, achieved through adjustments to the composition at the raw material stage.
TT-TEM™ This high-quality molybdenum material overcomes the brittleness and high-temperature deformation issues associated with conventional molybdenum. It exhibits excellent high-temperature deformation resistance, a high recrystallization temperature, and a wedge-shaped recrystallized structure. Even after high-temperature use, it retains excellent impact resistance and remains deformable at room temperature, offering greater bendability than pure molybdenum.
TZM Molybdenum with added Ti, Zr, and C. It has a high recrystallization temperature, high-temperature strength, and excellent creep resistance. It is used for forging tools and rotating anodes of X-ray tubes.

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Type Applications Non-sag Shock
resistance		 Machinability Abrasion
resistance
MOP Structural heaters, Bolts, Nuts Average Good Excellent Excellent
MOS Grids, Mandrels, Anchors Good Good Excellent Good
TT-TEM™ Supports, Heaters, Bolts, Nuts, Supporting shafts for X-ray tubes Excellent Excellent Excellent Good
TZM Forging tools, Furnace components Good Excellent Excellent Excellent

Standard specifications of molybdenum rods

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Diameter range
(mm)
More than - Less than		 Type Finish Tolerance
diameter
(mm)		 Finish
grinding *1		 Tolerance
diameter
(mm)
MOP MOS TT-TEM™ TZM Drawn,
Swaged		 Electrolytic
polished		 Chemical
cleaned
0.02～0.20   ✓     ✓ ✓   ±0.005    
0.20～0.40 ✓ ✓ ✓   ✓ ✓   ±0.005    
0.40～0.50 ✓ ✓ ✓   ✓ ✓   ±0.01    
0.50～0.60 ✓ ✓ ✓   ✓ ✓   ±0.02    
0.60～0.80 ✓ ✓ ✓   ✓ ✓   ±0.03    
0.80～1.0 ✓ ✓ ✓   ✓ ✓   ±0.03 ✓  
1.0～1.5 ✓ ✓ ✓   ✓ ✓   ±0.05 ✓ ±0.02
1.5～2.0 ✓ ✓ ✓   ✓   ✓ ±0.05 ✓ ±0.02
2.0～3.0 ✓ ✓ ✓   ✓   ✓ ±0.05 ✓ ±0.03
3.0～4.0 ✓ ✓ ✓   ✓   ✓ ±0.15 ✓ ±0.03
4.0～4.6 ✓ ✓ ✓   ✓   ✓ ±0.15 ✓ ±0.03
4.6～5.0 ✓   ✓   ✓   ✓ ±0.15 ✓ ±0.03
5.0～6.4 ✓   ✓   ✓   ✓ ±0.2 ✓ ±0.05
6.4～8.6 ✓   ✓   ✓   ✓ ±0.25 ✓ ±0.05
8.6～12.0 ✓   ✓       ✓ ±0.3 ✓ ±0.05
12.0～15.0 ✓   ✓       ✓ ±0.4 ✓ ±0.1
15.0～22.0 ✓   ✓       ✓ ±0.5 ✓ ±0.15
22.0～26.0 ✓   ✓ ✓     ✓ ±0.6 ✓ ±0.15
26.0～28.0 ✓   ✓ ✓     ✓ ±0.7 ✓ ±0.2
28.0～50.0 ✓   ✓ ✓     ✓ ±1.0 ✓ ±0.2

*1 Finish grinding: Centerless grinding for diameters less than 30 mm. and cutting-belt grinding for diameters of 30 mm and larger.
*2 For products with a diameter of 50 mm or greater, please contact us.

Purity of molybdenum wires and rods

Type Purity（%）
MOP, MOS 99.95 min.
TT-TEM™, TZM 99.00 min.

Bending ability of TT-TEM rods

Excellent high-temperature deformation resistance of TT-TEM rods, and examples of heater use

Molybdenum technical information