About Accumet Materials Co.

 

Accumet Materials Co.

 
     

 

   

 

 

 

 

 

 

HI-DENSITY, FINE GRAINED MgO CRUCIBLES

Accumet Materials’ 99.4% MgO ceramic material offers superior chemical resistance to attacks by metals and slags, making it a suitable replacement for alumina.  The material has temperature resistance to 2200 șC* and offers good mechanical strength.  It is also compatible with nickel based super-alloys, and high temperature superconductor materials. Applications include molten metal alloy processing, piezoelectric materials processing and high temperature superconductor materials. 

Accumet offers a complete standard line of MgO flat bottom crucibles, round trays, flanged lids, rectangular trays, and tubes. 

In addition to our standard line, Accumet can supply custom quality crucibles, tubes and pressed shapes per customer specifications for specialized refractory and corrosive applications. For a prompt quotation, call, fax, e-mail or write your requests and include dimensions, tolerances and a description of the application.  Our engineers will recommend the material best suited for your application.

*MgO is subject to creep about 1100șC and should be supported with MgO sand.

MgO MATERIAL PROPERTIES

   
Crystal Structure Cubic
Melting Point 2200șC
Theoretical Density 3.58 g/cc
Hardness 5.5 MoH
Bend Strength 35,000 psi @ 25 șC
Compressive Strength 120,000 psi
Coefficient of Thermal Expansion 13.9 in/in-C x 106
Thermal Conductivity 0.480 (W/cm-C) @ 20 șC
Electrical Conductivity 10-12 ohm-cm @ 25 șC
Dielectric Strength 150 Kv/cm
Dielectric Constant 9.6
 
 

      Standard High Density MgO Shapes

FLAT BOTTOM CRUCIBLES

O.D. (inches)

Height (inches)

Volume (cc)

0.50

1.00

2

0.71

1.60

8

0.75

1.00

6

1.00

1.00

7

1.00

1.25

9

1.00

3.00

25

1.25

1.25

15

1.25

2.00

25

1.25

2.50

30

1.50

2.00

35

1.50

3.00

55

1.75

3.50

100

2.00

2.00

75

2.00

3.50

135

2.00

6.00

205

2.25

3.50

175

2.50

3.00

190

2.50

5.50

350

2.75

3.50

285

3.00

3.00

280

3.00

4.00

430

3.00

5.75

550

3.50

3.00

800

3.62

6.00

850

3.75

6.00

900

4.00

4.50

800

4.00

6.00

1050

4.50

6.00

1350

5.00

8.00

2275

 

 

 

Round trays

OD (inches)

Height (inches)

Volume (cc)

1.00

0.5

3

1.00

0.8

6

2.00

0.5

15

2.00

1.0

35

3.00

0.5

37

3.00

1.0

85

4.00

0.5

68

4.00

1.0

160

5.00

0.5

110

5.00

1.0

250

6.00

1.0

360

6.00

1.2

420

 
 

 

RECTANGULAR TRAYS

Width (inches)

Length (inches)

Height (inches)

Volume (cc)

1.0

4.0

0.5

20

1.0

6.0

0.5

30

2.0

2.0

0.5

20

2.0

3.0

0.5

33

2.0

4.0

0.5

45

2.5

4.0

0.5

55

2.5

4.0

1.0

125

2.5

6.0

1.0

195

3.0

3.0

1.0

115

3.0

4.5

1.0

175

3.0

6.0

1.0

240

3.5

6.0

1.0

280

4.0

4.0

1.0

210

4.0

6.0

1.0

325

 

Notes:

1)       All dimensions are outside dimensions and may vary +/- 5%.

2)       Volumes are in cc’s and are only approximate because the wall thickness may vary.

3)       Nominal wall is lesser of 5% of diameter or 0.125”.

4)       Some warping and sidewall distortion is normal for MgO, especially rectangular shapes.

5)       Nominally flat surfaces may be slightly convex or concave. 

 

 

 

Accumet Materials Co. accepts 

 Call us at (914)762-1540, Fax us at (914) 762-1291 or
  E-Mail us at
sales@accumetmaterials.com

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