904L stainless steel main components: 20Cr-24Ni-4.3Mo-1.5Cu Grade – C Mn Si P S Cr Mo Ni Cu N ASTM A213N08904 904L min. max. – 0.020 – 2.00 – 1.00 – 0.040 – 0.030 19.0 23.0 4.0 5.0 23.028.0 1.02.0 –0.10 EN 10216-5 1.4539 min. max. – 0.020 – 2.00 – 0.70 – 0.030 – 0.010 19.0 21.0 4.0 5.0 24.026.0 1.22.0 –0.15 904L N08904 stainless steel is a low-carbon, high-alloyed austenitic stainless steel designed for environments with harsh corrosion conditions. It has better corrosion resistance than 316L and 317L, and at the same time, it takes into account both price and performance, and is extremely cost-effective . Because of the addition of 1.5% copper, it has very good corrosion resistance for reducing acids such as sulfuric acid and phosphoric acid. 904L super austenitic stainless steel also has excellent corrosion resistance to stress corrosion, pitting corrosion and crevice corrosion caused by chloride…

TP304H stainless steel has high thermal strength and good oxidation resistance, widely used in the high temperature section of boiler superheaters and reheaters over 600℃, and the maximum operating temperature can reach to 760℃. The use of TP304H stainless steel, to a certain extent, solves the over-temperature tube burst caused by the large temperature difference of the furnace smoke, and significantly improves the safety of the boiler operation. However, TP304H stainless steel is prone to structural transformation during long-term high temperature operation, resulting in material aging. Therefore, studying the structure transformation of TP304H austenitic stainless steel and its influencing factors when operating under high temperature conditions is of great significance for rationally arranging the running time of the material, monitoring the damage degree of the pipeline online, and improving the material itself. For this reason, through the high temperature aging simulation test, the influence of aging temperature and time on…

Guanyu Tube is specialized manufacturer of Heat Exchanger Tubes. A heat exchanger is a device built for efficient heat transfer from one medium to another. The media may be separated by a solid wall, so that they never mix, or they may be in direct contact.They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries, and natural gas processing. One common example of a heat exchanger is the radiator in a car, in which the heat source, being a hot engine-cooling fluid, water, transfers heat to air flowing through the radiator (i.e. the heat transfer medium). In almost any chemical, electronic, or mechanical system, heat must be transferred from one place to another or from one fluid to another. Heat exchangers are used to transfer heat from one fluid to another. A basic understanding of the mechanical components of a heat exchanger is important to understanding how they function and…

Heat Catagory