Spray nozzles & systems
Which material is most suitable for the spray process?
Listed below are a number of factors that should be considered when selecting material for a specific nozzle. Wrong choice of material is likely to affect nozzle performance and lifespan. We are happy to assist and advise on which material is most suitable for your spray process. Please contact us.
Melting or softening of material establishes maximum temperature limits, which are listed in the table below (Temp. Rating (°C)). These temperature limits must be reduced when corrosion, oxidation, or chemical attack are present.
Corrosion can lead to wear and tear, increase flow rate, and affect droplet size and spray pattern. This, in turn, leads to increased costs due to a less efficient process, increased amount of maintenance and equipment damage downstream.
A corrosive environment, or if the liquid being sprayed is corrosive, limits the choice of material. If alloy is not suitable for a specific process, plastic can be an option if temperature allows. Another option is to use spray nozzles made of ceramic material.
There are few general guidelines to this complex subject, but the material used for piping might provide a useful indicator of a suitable nozzle material. If you know which chemicals the process contains, we can assist you in finding a the right material for your process.
Hardened stainless steel, Cobolt Alloy 6, tungsten carbide and ceramic materials are often used in processes where liquids with abrasive properties are sprayed.
Sometimes, of course, cost needs to be taken into account, but it is important to consider the cost of the investment over the full lifespan of the nozzle.
Below is a list of the most requested spray nozzle materials. The list includes the standard specification (DIN), maximum temperature limit and BETE material code.
|Material Description||BETE Material No.||(DIN) Description||Temp. Rating (°C)||Trade Name|
|L.C. Steel||72||carbon steel||210°|
|Alloy 20||70||2.4660||490°||Carpenter® 20|
|Nickel Alloy M30C||37||2.4360/2.4366||540°||Monel|
|Nickel Alloy 600||35||2.4816||1100°||Inconel® 600|
|Nickel Alloy 625||3B||2.4856||1100°||Inconel® 625|
|Nickel Alloy 800||33||1.4876||1010°||Incoloy® 800|
|Nickel Alloy 825||34||2.4858||1010°||Incoloy® 825|
|Nickel Alloy B||31||2.4800/2.4810||760°||Hastelloy® B|
|Nickel Alloy G||32||2.4619||1100°||Hastelloy® G|
|Nickel Alloy G30||49||2.4603||1100°||Hastelloy® G30|
|Nickel Alloy C276||81||2.4819||1100°||Hastelloy® C276|
|Nickel Alloy C22||2A||2.4602||1100°||Hastelloy® C22|
|Cobalt Alloy 6||9||1050°||Stellite® 6|