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Molybdenum Rod & Bar | ASTM B387 Pure Mo & TZM

Reference: HTMO1078

Condition: New product

Molybdenum Rods & Bars in pure Mo, TZM, and MoLa alloys for vacuum furnaces, high-temperature heating elements, electrodes, structural parts, and machined components. Available in round and square forms with purity up to 99.99%, multiple surface finishes, custom dimensions, and tight tolerances. Request a quote for standard or custom sizes.

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Data sheet

Shape	Round, Square
Materials	Molybdenum metal/TZM/MoLa Alloy
Purity	99.95%
Standard	ASTM B387

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Molybdenum Rods and Bars, produced through powder metallurgy and subsequent forming processes, combine a high melting point, good thermal conductivity, low thermal expansion, and dimensional stability at elevated temperatures. They are widely used for electric vacuum devices, light-source components, high-temperature heating elements, structural components, electrodes, and furnace hardware.

Heeger Materials supplies pure molybdenum, TZM, and MoLa rods and bars in standard and custom dimensions for vacuum furnaces, glass-melting equipment, ceramic processing equipment, high-temperature assemblies, and precision-machined components.

Molybdenum Rod/Bar, Mo

Molybdenum Rod and Molybdenum Bar Specifications

Size	Diameter: 0.125 inches ~ 4.0 inches* Length: < 10 feet
Material	Pure Mo₃₆₁, MoTZM (Mo₃₆₄), Mo-Lanthanoxid (ML)
Standard	ASTM B387
Purity	99.95%, 99.99%

*If the diameter is <0.125”, please check our Molybdenum wire.

Molybdenum Rod and Molybdenum Bar - heegermaterials

Molybdenum Rod Material Options

Material	Key Characteristics	Typical Selection
Pure Molybdenum	High purity, good thermal conductivity, low thermal expansion	General vacuum, furnace, electrode and machined parts
TZM	Higher strength at elevated temperatures than pure Mo	High-load furnace hardware and structural components
MoLa	Improved high-temperature structural stability compared with pure Mo	High-temperature furnace and thermal applications

Molybdenum Rod Surface

Cleaned: The surface is chemically cleaned to remove all lubricants and oxides.
Black: The surface is either as swaged or as drawn and retains a coating of processing lubricants and oxides.
Ground: The surface is center-less ground to remove all coating and to achieve precise diameter control.

How to remove the black oxide layer on the surface of the molybdenum rod?

Black or oxidized molybdenum surfaces may require mechanical or chemical cleaning depending on oxide thickness and the required final surface condition.

Chemical oxide removal can involve highly hazardous acids and should only be performed under an approved industrial chemical-treatment procedure by trained personnel with appropriate engineering controls and PPE.

For applications requiring a clean or precision surface, we recommend ordering cleaned or centerless-ground molybdenum rod directly rather than performing post-delivery chemical treatment.

Molybdenum Round Rod Dimensions

Diameter (inch)	Length (inch)	Diameter Tolerance (inch)	Length Tolerance (inch)
0.08 - 0.40	<315	±0.005	+0.08, -0
0.40 - 0.80	<118	±0.010	+0.08, -0
0.80 - 4.00	<78	±0.015	+0.08", -0
>4.00	<40	±0.025	+0.08, -0

Molybdenum Square Bar Dimensions

Width (mm)	Thickness (mm)	Length (mm)	Length Tolerance (mm)
15	15	600	+1, -0
20	20	1000	+1, -0
45	45	1200	+2, -0
60	60	1500	+3, -0

Molybdenum Rod/Bar Applications

Vacuum Furnace Components

Molybdenum rods and bars are used for heating elements, supports, fixtures, fasteners, and structural components in vacuum and protective-atmosphere furnaces.

Glass Melting Electrodes

Molybdenum rods can be used as electrodes in selected glass-melting and refractory-fiber production systems where high-temperature performance and electrical conductivity are required.

Electric Vacuum & Light-Source Components

Pure molybdenum rods are used for selected electric vacuum devices and light-source components requiring refractory-metal properties and dimensional stability.

Ion Implantation & Semiconductor Equipment

Molybdenum rods can be machined into selected components for ion implantation, vacuum, and semiconductor-processing equipment.

High-Temperature Structural Parts

Pure Mo, TZM, and MoLa rods can be used for high-temperature supports, fixtures, shafts, pins, and other machined components according to operating conditions.

Electrodes & Specialty Metallurgy

Molybdenum rods are also used as electrodes and conductive components in selected metallurgical and high-temperature processes.

Molybdenum Rod/Bar Packing

The Molybdenum Rods and Bars will be carefully packaged in wooden cases, with additional support from soft materials, to prevent any shifting or movement during transit.

molybdenum-rod-bar-packing Molybdenum (Mo) Rod/Bar Packing

Molybdenum Rod Inventory List

Molybdenum Rod Available Dimensions ASTM B-387 Type 361
.060” diameter × r/l’s	.250” diameter × r/l’s	1.010” diameter × r/l’s	.062” diameter × r/l’s	.3125” diameter × r/l’s
1.125” diameter × r/l’s	.070” diameter × r/l’s	.375” diameter × r/l’s	1.250” diameter × r/l’s	.080” diameter × r/l’s
.437” diameter × r/l’s	1.500” diameter × r/l’s	.100” diameter × r/l’s	.510” diameter × r/l’s	1.750” diameter × r/l’s
.125” diameter × r/l’s	.525” diameter × r/l’s	2.000” diameter × r/l’s	.132” diameter × r/l’s	.625” diameter × r/l’s
2.250” diameter × r/l’s	.1875” diameter × r/l’s	.760” diameter × r/l’s	2.600” diameter × r/l’s	.890” diameter × r/l’s

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