MoLa & MoY

[MoLa 0.03 / 0.3 / 0.7 | MoY 0.5-0.7]
MoLa and MoY are molybdenum alloys with small amounts of lanthanum oxide or yttrium oxide. Even additions of 0.03-0.7% by weight significantly increase the high-temperature strength and recrystallization temperature compared to pure Mo. The finely dispersed oxide particles act as barriers against grain growth and stabilize the microstructure. MoLa/MoY are preferably used where pure Mo is limited by grain growth and loss of strength - e.g. in furnace components, heating wires/ropes, furnace boats, filaments as well as pins and wires for lamps/coils.

Grades & data sheets

Variety Composition Available as data sheet
MoLa 0.03 Mo > 99.9 %; La₂O₃ 0.03 % Rods, pins, wires, sheets, plates and according to drawing On request
MoLa 0.3 Mo > 99.7 %; La₂O₃ 0.3 % Rods, pins, wires, sheets, plates and according to drawing Material data sheet
MoLa 0.7 Mo > 99.3 %; La₂O₃ 0.7 % Rods, pins, wires, sheets, plates and according to drawing Material data sheet
MoY Mo > 99.3-99.5 %; Y₂O₃ 0.5-0.7 % Rods, pins, wires, sheets, plates and according to drawing On request
The key features are as follows: Oxide dispersion hardened (La₂O₃ / Y₂O₃); increased recrystallization temp.

Supply programme

Rods, pins, wires, sheets, plates, strips and finished parts according to customer drawings

Properties

- Significantly increased high-temperature strength compared to pure Mo - Higher recrystallization temperature; inhibited grain growth (dispersion hardening due to La₂O₃/Y₂O₃) - Dimensionally and microstructurally stable at high temperatures - Good thermal and electrical conductivity of the Mo base is maintained

Applications

- Furnace components, heating wires and heating cables - Furnace boats, filaments - Pins and wires for lamps & coils

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Specifications / standards

- ASTM F289 - Molybdenum wire & rod (electron applications) - ASTM B386 - Molybdenum & Mo alloys: Plate, Sheet, Strip, Foil - ASTM B387/B387M - Molybdenum & Mo Alloys: Rod, bar & wire - ASTM F364 - Molybdenum flat wire (electron tubes)

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