T&D supplies high-quality tungsten and molybdenum crucibles, cylinders, and accessories for sapphire growing applications.

• The following sizes of crucibles are available: 30kg, 35kg, 55kg, 65kg, 90kg, and 120kg

• The purity is 99.95% min for both tungsten and molybdenum crucibles

• Particularly high density

• We have complete equipment to test physical properties such as density, hardness, surface roughness, grain size, tensile strength, etc. The possible internal issues of the crucible such as porosity, slag, and cracks are doubly strictly inspected by eddy current and ultrasound.

• We mostly supply forging crucibles with high density. Machined from deep forged tungsten rods. The density is very close to the theory value. For some extremely large outside-diameter crucibles, we supply sintering finished crucibles. We still get good density by carefully controlling the HIP furnace sintering temperature.

• All our crucibles can be used for above 2000°C degree

• We can also make a complete hot zone for a sapphire crystal growth furnace; tungsten heaters; molybdenum up shields, side shields; tungsten down shields, base shields; molybdenum current lead shields, current lead shields; tungsten standers, supporter and tungsten crucible pallets; molybdenum bottoms; tungsten and molybdenum see holders, etc.

• Creep resistance, corrosion resistance

• Machined finished inside and outside with good surface roughness.

• All outside, height, wall thickness, and base thickness are available.

• All other tungsten/molybdenum accessories are available.

Here are some sizes of crucibles we make for mono-crystal growing applications.

• OD 130×150;

• OD 200×240;

• OD 240×300;

• OD 250×350-400;

• OD 330×350;

• OD 330×450;

• OD 338×460;

• OD 350×550;

T&D supplies molybdenum and tungsten trays/boats for vacuum PM and MIM. The material can be Pure Molybdenum, Lan-Molybdenum, TZM Molybdenum, or Pure Tungsten.

Our trays/boats can be with or without rivets, welded, or non-welded according to the specifications detailed in your technical drawings. All charge carriers are also available according to your technical drawings.

We can also supply aluminum trioxide-coated trays/boats.

We strongly recommend you choose Lanthanum-Molybdenum or TZM Moly material folded design trays/boats. They can be used for a long time under 1700°C degrees. Please review the attached boat sketch.

We can supply the plates and trays with holes to meet your requirements. Moly and Tungsten spacers are available. Unique spacer designs are available.

The normal thickness is 0.100”, 0.125”, 0.15”, 0.200”. However, we can provide any width, height, and length of trays/boats.

Here are some examples for your reference

Lan-Moly material, folded design

• 0.125” THK, 1.00” Hx7.50” Wx12” L,

• 0.100” THK, 1.60” Hx2.70” Wx18.50” L,

• 0.125” THK, 1.60” Hx2.70” Wx18.50” L,

• 3/16” THK, 1.25” Hx12.00” Wx12.00” L,

• 3/16” THK, 1.75” Hx12.00” Wx12.00” L,

We also supply the following molybdenum and tungsten products:

1. Pure Moly, TZM Moly, MLR Moly, and Ta Sheet and Plate (fully annealed).

We can supply 24” width x 120” L of the sheet with a thickness of 0.005” and up. All our Mo sheets are as per ASTM B386 standard.

2. Pure Moly, TZM Moly, and MLR Moly Rod and Wire (fully annealed, cleaned) as per ASTM B387.

3. Pure Tungsten Rod (Deep Forged, Cleaned)

4. Threaded Moly Rods and Hex Nuts

• Threaded Rods:

  • 10-32 x 36”

  • 1/4-20 x 36”

  • 3/8-16 x 36”

• Hex Nuts:

  • 10-32

  • 1/4 – 20

  • 3/8 – 16

5. Tungsten Sheets and Plates

6. Besides supplying sheets, rods, and wires, we also fabricate Mo/W/Ta parts according to your technical drawings including hot zones, heat shields, molybdenum retort, grid elements, sintering boats, charge carriers, shelves, hangers, and heating elements.