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This data is typical of the products made.  Packaged in 55 lb. bags or 2,200 lb. totes.  Custom particle sizes and packaging available.
 


Investment Casting Grades: Grains
 

Sieve Analysis:

 


U.S. Std. Sieve%

10/20

30/50

50/100

F100

8

<2

-

-

-

12

  6 – 25

-

-

-

16

33 – 50

-

-

-

20

25 – 45

<1

-

-

30

<13

15 – 30

-

-

40

-

38 – 50

-

-

50

<4

20 – 35

<13

-

70

-

-

30 – 60

-

80

-

<10

-

-

100

-

-

28 – 51

<15

140

-

-

  4 – 16

17 – 40

200

-

-

<2

19 – 34

325

-

-

-

14 – 30

Pan

<3

<2

<1

  4 – 20

Magnetics ppm 

<50

<50

<50

<50

 

 

  

 

 

 

 

 

 

 

 

Physical Properties:

  Apparent Specific Gravity 2.18 – 2.20 g/cc

Thermal Properties:

  LTE Coefficient (20-700 °C) 0.5-0.6 x 10-6 /°C

Chemical Composition

  SiO2  >99.7 %
  Al2O3   <1,700 ppm
  Fe2O3 <280 ppm
  TiO2 <250 ppm
  K2O  <120 ppm
  CaO <75 ppm 
  Na2O <50 ppm