Furnace tube materials
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The material of the furnace tube is HK-40. What are the components of HK-40? Are there any other materials used for furnace tubes?
The material of the furnace tube is ZG4Cr20Ni25 (HK-40) steel, with the following chemical composition: C Mn Si P S Ni Cr Mo – Standard values: 0.35～0.45, ≤1.5, 0.5～2.0, ≤0.04, ≤0.04, 19～22, 23～27, ≤0.50
There are many materials that can be used for furnace tubes. The HK40 material you mentioned was originally used primarily for furnace tubes in hydrogen production converters; nowadays, HP40 is generally used for such converter tubes. 1Cr18Ni9Ti is employed for the feed heating furnaces in hydrocracking reactions, while Cr5Mo is used for distillation furnace tubes. The choice of material depends on factors such as the temperature of the medium to be heated, its corrosiveness, pressure, as well as economic considerations.
Our heat transfer oil furnaces all use 20G material
The purpose is as mentioned above: to select the pipe material based on the operating conditions. Depending on temperature and the type of medium, the available materials include 20G, 15CrMo, 0Cr18Ni9, HK-40, HP-Nb, etc.
1Cr5Mo, 1Cr9Mo, TP321H, TP347H, etc. are also used quite frequently; HK40 is produced through centrifugal casting
20G, 15CrMo, 0Cr18Ni9, and HK-40 are indeed used quite frequently
We’re using TP347H
There are many materials suitable for making furnace tubes, such as 20#, 20G, 15CrMo, Cr5Mo, Cr9Mo, 304, 321, 316L, HK-40, HP-Nb, etc. The selection of materials for furnace tubes is determined by a comprehensive consideration of the furnace’s process requirements and economic factors. For example: For furnaces with stringent operating conditions, such as cracking furnaces and hydrogen production conversion furnaces, HK-40 and HP-Nb are commonly used. For furnaces like coking furnaces and reforming four-in-one furnaces, materials such as Cr5Mo and Cr9Mo are employed. Stainless steel materials are typically used for hydrogenation reactors
We are using the 800HT
Teachers on the forum: Hello! I urgently need HK40 piping. From what I’ve found, its grade is ZG4CR20NI25. I would like to ask what \"ZG4\" refers to And I don’t know where in the country this material can be found. Thank you all. My phone number is 13840060198