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904L UNS N08904 1.4539 Alloy 904 L X1NiCrMoCu25-20-5 stainless steel tube bundles Tubing Bundles For shell tube Heat exchanger Boiler condensors heaters coolers evaporator
We are professional 904L UNS N08904 1.4539 Alloy 904 L X1NiCrMoCu25-20-5 stainless steel tube bundles Tubing Bundles For shell tube Heat exchanger Boiler condensors heaters coolers evaporator from china
A tube bundle heat exchanger with baffles is disclosed wherein a tube bundle is housed within an inner casing which is acted upon from both the inside and the outside by a heating medium
A multiple tube bundle heat exchanger includes axially opposite tube plates, a housing, and a plurality of tube bundles disposed between the tube plates. Each of the tube bundles is an independent tube bundle subassembly forming an integral unit having at least one heat exchanger tube with two axial tube ends.
Material 1.4539 (alloy 904L) is an austenitic special steel with high molybdenum content as well as addition of copper and extremely low carbon content.
Our product range in 1.4539 are tubes and pipes, fittings and flanges, accessories.
Chemical composition ¹ | ||||||||
| C ≤ % | Si ≤ % | Mn ≤ % | P ≤ % | S ≤ % | Cr % | Mo % | Ni % | V |
| 0,02 | 0,70 | 2,0 | 0,030 | 0,010 | 19,0-21,0 | 4,0-5,0 | 24,0-26,0 | |
| Nb | Ti | Al | Co | Cu % | N ≤ % | Fe | ||
| 1,20-2,00 | 0,15 | |||||||
| ¹ in accordance with Key to Steel 2001 | ||||||||
Special characteristics | ||
| Temperature range: | Density kg/dm³ | Hardness (HB) |
|---|---|---|
| pressure bomb/pressure vessel - 60°C bis 400°C | 7,9 | ≤ 230 |
| excellent stability against pitting corrosion, stress corrosion and intergranular corrosion | ||
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