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 Type U Molybdenum Disilicide Heating Elements

Ordering Molybdenum Disilicide Heating Elements

 Step 1

Indicate which type of element you need.

Type 1700 "U"

 

Type 1800 "U"

Type 1700"U Bend In Lu"

 

Type 1800"U Bend In Lu"

Type 1700 "U Bend In Le"

 

Type 1800 "U Bend In Le"

Type 1700 "U Bend In Lu"

 

Type 1800 "U Bend In Lu"

Step 2

Indicate the following dimensions identified in the element drawings above:

  • Heated Length Diameter (d)
  • Terminal Diameter (c)
  • Heated Length (Le)
  • Terminal Length (Lu)
  • Terminal Spacing (a)

Note:  Element diameters are normally specified in millimeters.  For example, an element with a (d) diameter of 6 mm and a (c) diameter of 12 mm is often referred to as a 6/12 element.  Other dimensions may be specified in millimeters or inches.


AVAILABILITY 
TYPICAL SIZES

Grade 

1700

1800

1900

d/cmm     

3/6

4/9

6/12

9/18

12/24

3/6

4/9

6/12

9/18

12/24

3/6

6/12

Le, max mm.

350

450

1400

1400

1700

350

450

1400

1400

1700

320.0

360.0

Lu, max mm

300

450

1000

1000

1000

300

450

1000

1000

1000

320.0

360.0

a typical mm

25

25

40/50

60

80

25

25

40/50

60

80

25

40/50

f mm

25

25

45

75

100

25

25

45

75

100

25

45

g mm

15

15

25

30

40

15

15

25

30

40

15

25


USEFUL ELEMENT TEMPERATURES IN VARIOUS ATMOSPHERES, ºC (ºF)

Grade

1700

1800

1900

Air

1700 (3092)

1800 (3272)

1850(3360)

Nitrogen

1600 (2912)

1700 (3092)

1800 (3270)

Argon, Helium

1600 (2912)

1700 (3092)

1800 (3270)

Hydrogen

1100-1450
(2012-2642)

1100-1450
(2012-2642)

1100-1450
(2012-2642)

Nitrogen/Hydrogen   95/5%*

1250-1600
(2282-2912)

1250-1600
(2282-2912)

1250-1600
(2282-2912)

Exogas 
    (e.g. 10% CO², 5% CO, 15% H²)

1600 (2912)

1700 (3092)

1700 (3092)

Endogas 
    (e.g. 40% H², 20% CO)

1400 (2552)

1450 (2642)

1450 (2642)

Cracked and partially burnt  ammonia (~8%H² )

1400 (2552)

1450 (2642)

1400 (2552)

Step 3

Indicate any other critical dimensions or tolerances if needed.

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