|
Products
Tubes in FeCrNi - alloys
Tubes in FeCrNi and NiCr alloys are, from stock, mainly available in the high performance heat resistant grade 253MA; The following tube sizes are stocked:
Tube size,mm(inch)
OD x wt |
Alloy |
Thread |
40x2.5
(1.57" x 0.1") |
253MA |
1 ¼” BSP |
33.7x2.5
(1.33" x 0.1") |
253MA |
1” BSP |
26.67x2.87
(1.05" x 0.11") |
Alloy 600 |
¾” BSP |
26.67x2.5
(1.05" x 0.1") |
253MA |
¾” BSP |
25x1.5
(1" x 0.06") |
253MA |
BSP: ½”, ¾”, 1” NPT:½”, ¾”, 1” |
22x1.5
(0.87" x 0.06") |
253MA |
BSP: ½”, ¾”, 1” NPT:½”, ¾”, 1” |
19x1.5
(0.75" x 0.06") |
253MA |
BSP: ½”, ¾”, 1” NPT:½”, ¾” |
15x1.5
(0.59" x 0.06") |
253MA |
BSP: ½”, ¾”
NPT:½”, ¾”
|
Other sizes and other FeCrNi and NiCr alloys are also available.
The tubes are available in lengths up to 13 meters (42.6 feet) or cut to shorter lengths, equipped with a closed end and a thread for protection tubes or connections for the inlet of protection gas, for muffle tubes.
|
Tubes in FeCrAl - alloys
Tubes in FeCrAl alloys are available from stock in the following sizes:
Tube size,mm (inch) OD x wt NPT:½”, ¾”
Tube size,mm (inch) OD x wt |
Alloy |
Threads |
40x3
(1.57" x 0.12") |
APM |
1 ¼” BSP |
35x1.5
(1.38" x 0.06") |
Alkrothal |
|
33.4x3
(1.33" x 0.1") |
APM |
1” BSP |
26.67x2.87
(1.05" x 0.11") |
APM |
¾” BSP |
22x1,3
(0.9" x 0.05") |
AF |
BSP: ½”, ¾”, 1”
NPT:½”, ¾”, 1” |
22x1.3
(0.9" x 0.05") |
APM |
BSP: ½”, ¾”, 1”
NPT:½”, ¾”, 1” |
19x1.3
(0.8" x 0.05") |
AF |
BSP: ½”, ¾”, 1"
NPT:½”, ¾” |
15x1.3
(0.59" x 0.05") |
AF |
BSP: ½”, ¾”
NPT: ½”, ¾” |
15x1.0
(0.59" x 0.04") |
A-1 |
BSP: ½”, ¾”
NPT:½”,¾” |
12.7x0.8
(0.5" x 0.03") |
AF |
BSP: ½”
NPT: ½” |
6x0.4
(0.25" x 0.015") |
|
|
Since we have these tubes in stock and an efficient distribution organisation, we can deliver these tubes within one week, to any corner of the world, if required.
Kanthal APM is available in tube sizes up to an outer diameter of 220 mm (8.66”).
The tubes are available in lengths up to 13 meters (42.6 feet) or cut to shorter lengths, equipped with a closed end and a thread for protection tubes or connections for the inlet of protection tubes, for muffle tubes.
|
Muffle tubes in FeCrAl - alloys
Muffle tubes in FeCrAl- and FeCrNi - alloys
Annealing of wire, thin strip and small sized tubes are often performed in muffle tubes. The cross section of the tubes can be circular, which is typical for wire and tube, or oval in the case of strip.
The high oxidation resistance of the FeCrAl alloys often make them the most suitable material selection for muffle tubes.
The exception is when the protecting gas is cracked ammonia; In such a case, a high nickel alloy like Alloy 800HT or Alloy 600 is recommended.
253MA is often the best choice at temperatures below 900°C (1652 F).
Thermalloys can supply tubes in FeCrAl from stock in the size range OD = 15-40 mm ( 0.6-1.57 inch) in lengths up to 13 meters (43 feet).
We can also supply muffle tubes in 253MA, Alloy 600 and Alloy 800.
For the annealing of thin strip, the tubes can be supplied with an ovalized cross section.
|
Protection tubes
Protection tubes for high temperatures
Thermalloys manufactures and supplies;
-
Tubes in FeCrAl-alloys, for protection tubes, for hot gas injection and for hot gas analysis.
-
Tubes in the 253MA-grade, for use at lower temperatures than the FeCrAl alloys.
-
Tubes in Super 1700, a material with the main constituent being MoSi2; Super 1700 can be used at higher temperatures than the FeCrAl alloys.
Tubes in these materials can be supplied in the following product forms;
-
As straight tubes with open ends in lengths up to 6 meter (20 feet) for the metallic materials, up to 2 meter (7.87 feet) for Super 1700.
-
As tubes cut to the required length with a welded end cap in one end, the other end open.
-
As tubes cut to the required length with a welded end cap in one end and a suitable thread in the other end. For thinwalled tubes, a stainless steel thread is welded onto the tube end, for thickwalled tubes, the tube itself can be threaded.
-
With suitable flanges or other components welded on.
Since we carry a large stock of tubes in FeCrAl alloys and in 253MA as well as in end caps, threads and other components, we can guarantee fast deliveries, less than two weeks to any corner in the world. The delivery time of tubes in Super 1700 is at present 3-6 weeks, depending on specification.
|
|
|
|
|
Radiant tubes
Radiant tubes with long service lives
Radiant tubes are exposed to corrosive furnace atmospheres at high temperatures; Depending on the service temperature and the furnace atmosphere, different heat resistant materials are used.
Thermalloys supplies radiant tubes in the following heat resistant alloys:
-
Kanthal APM; Has the best oxidation resistance of all commercial Fe and Ni base alloys, except in cracked ammonia..
Is suitable as:
-
Flame tubes in U-, W-, P– och tridenttubes, as well as in straight tubes.
-
Inner tubes in radiant tubes for recuperative burners.
-
25Cr20Ni (AISI 310), 253MA, (S30815), Alloy 800HT and Alloy 600.
While the 310 and 253MA alloys are used to a large extent in oxidising environment when wrought material is specified, the 800HT and Alloy 600 alloys are used under nitriding conditions. Which one is selected also depends on availability and price; These material are in general used at lower temperatures and less corrosive atmospheres than Kanthal APM.
Tube sizes; Dependent on the alloy, tubes are available in the size range, OD x wt: 79x3 mm (3.11x0.12 inch) to 248x5 mm. (9.76x0.20 inch)
Smaller and larger sizes can be supplied on request.
|
Spark igniters
Spark igniters with a long service life for gas burners
The tip of a spark igniter for gas burners is continously exposed to the high temperature of the gas flame. This limits the life of the spark igniter.
Thermalloys therefore supplies spark igniters manufactured in the most highly resistant iron-base alloy on the market, a FeCrAl alloy. Thermalloys spark igniters therefore have a longer service life than most other spark igniters.
Material:
The electrode material is made of an iron base alloy, which can withstand operational temperatures of up to 1425 C (2600 F).
The standard wire diameters available are 1.6 (0.063”), 2.6 (0.10”) or 3.2 (0.126”) mm; Spark igniters with other wire diameters can be supplied on request.
The ceramic used for insulation is carefully selected to withstand the high temperature conditions and has a dielectric strength of 9055 V/mm (230V/mil).
The quick connect terminals, male or female, are made in nickel plated steel and tin plated brass, respectively.
Precision fabrication
During the fabrication of the spark igniters, we are most careful in making sure that the tip is located at the right angle and at the right distance. The ceramics are carefully locked into place by using high temperature cement.
Standard and custom design
With standard design is meant a straight rod design of any diameter or length; With custom design, we mean any geometry different from the standard design. We are manufacturing any standard or custom design required, including any geometry and with a short delivery time.
|
Heating elements from wire
For heat treatment furnaces, wire heating elements in FeCrAl alloys give the following advantages:
-
A higher element temperature as compared to FeCrNi alloys can be used.
-
A higher surface load
-
A lower weight
-
And often a lower cost
In addition, the service life is longer for heating elements made in FeCrAl alloys.
We can supply elements subject to failures in existing furnaces and also design and manufacture elements for new furnaces.
|
Other products
Other products / Applications
Thermalloys also manufactures and supplies other products for e.g. the furnace, steel and metal industry;
-
Radiant tubes in Kanthal APM, for use in aluminum furnaces, coated to increase the service life.
-
Burner nozzles in FeCrAl alloys, for increased service life as compared to nozzles in FeCrNi alloys.
-
Tubes in FeCrAl alloys for heating coils.
-
Reactors and coils, manufactured in Alloy 600, for the generation of cracked ammonia.
-
Reactors i Kanthal APM, for use at extremely high temperatures.
-
Burner tubes in 253MA
You are most welcome to contact us to discuss your particular need or problem; We will support you with both the material selection and the manufacturing of products.
|
|