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Views: 1 Author: Wang Publish Time: 2024-08-22 Origin: Site
Stainless steel 904L is a very low carbon containing high alloy austenitic stainless steel. The steel designed for the harsh corrosion conditions. 904L has been standardized in many countries now, and have already been approved in the manufacture of pressure vessels. 904L alloy with the same used as CrNi austenitic steel, has a good resistance to pitting and crevice corrosion capabilities, very high stress corrosion cracking capacity, good intergranular corrosion resistance property, good processability and Solderability.
The highest temperature heating up to 1180 ℃ when hot forging, the lowest temperature stop forging not less than 900℃. This steel may hot forming during1000 - 1150℃. The steel heat treatment process is 1100 - 1150 ℃, cold fast afrer heated. Although this may use common steel welding technology for welding, but the best way are manual arc welding and TIG welding. When using manual arc welding, the welding rod diameter should no more than 2.5 mm when welding 6 mm plate; the welding rod diameter is less than 3.2 mm when the thickness is greater than 6 mm. When need to heat treatment after welding, can fast-cooling after heat in 1075 - 1125℃. When useTIG welding, the filling metal can use with the same material, seam is subject to pickling, passivatingtreatment after the welding.
Copper has been added to the alloy of 904L Stainless Steel Pipe. Hence, its resistance to strong reducing acids such as sulfuric acid is very high. The lower content of carbon makes it easier to produce the AISI 904L Welded Pipe according to specification ASTM A312. Though the content of carbon is lower, these pipes could be used for high temperature applications. The significant inclusion of nickel to the alloy of ASME SA312 TP904L makes it possible for the pipes to have an outstanding performance even in elevated settings. Along with being a non-magnetic alloy, the Stainless Steel 904L Pipe also exhibits good resistance to stress related corrosion cracking.
904L (N08904,14539) super austenitic stainless steel contains 14.0-18.0% chromium, 24.0-26.0% nickel, and 4.5% molybdenum. 904L stainless steel has good activation-passivation transformation ability, excellent corrosion resistance, good corrosion resistance in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, and phosphoric acid, and has good corrosion resistance in neutral chloride-containing media. Very good resistance to pitting corrosion, as well as good resistance to crevice corrosion and stress corrosion. 904L stainless steel pipe is suitable for various concentrations of sulfuric acid below 70℃. It is resistant to acetic acid of any concentration and temperature under normal pressure, and the corrosion resistance in the mixed acid of formic acid and acetic acid is also very good.
The dimensions of the tubes vary according to the ASTM, ASME and API standards. The pipes range from ½ inches to 16 inches in nominal bore size for seamless pipes, ½ to 24 inches for ERW pipes and 6 to 100 inches for electric fusion welded pipes. The sizes range from 1/8 inches to 30 inches. These ASTM B677 UNS N08904 ERW Pipes are specialized as larger diameter pipes. There are varying schedules from sch20 through XXS. There are seamless, welded, fabricated, ERW and LSAW pipes. The 904L Stainless Steel Welded Pipes are good for welding. They can come in different pipe endings like plain, beveled and treaded. Please contact us for more information on the products such as the UNS N08904 Seamless Pipe and the prices.
Specifications | ASTM B673, B677 / ASME SB673, SB 677 |
Dimensions | ASTM, ASME and API |
SS 904L Pipes | 1/2″ NB – 16″ NB |
ERW 904L Pipes | 1/2″ NB – 24″ NB |
EFW 904L Pipes | 6″ NB – 100″ NB |
Size | 1/8″NB TO 30″NB IN |
Specialized in | Large Diameter Size |
Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
Form | Round, Square, Rectangular, Hydraulic Etc |
Length | Single Random, Double Random & Cut Length. |
End | Plain End, Beveled End, Treaded |
Stainless Steel 904L seamless pipes are primarily used in applications where high levels of corrosion resistance are required. The high nickel and chromium content in the alloy makes it highly resistant to corrosion in aggressive environments, such as high chloride, acidic, and alkaline solutions. Adding molybdenum enhances its resistance to pitting and crevice corrosion, enhancing its overall corrosion resistance.
Stainless Steel 904L seamless pipes have high tensile strength and excellent toughness, making them ideal for use in applications that require high mechanical strength, such as pressure vessels, heat exchangers, and chemical tankers. These pipes can withstand high temperatures and pressures, making them suitable for harsh operating conditions.
One of the major advantages of Stainless Steel 904L seamless pipes is their excellent weldability and formability. They can be easily welded using standard welding techniques without the risk of intergranular corrosion. Additionally, these pipes can be easily fabricated into various shapes and sizes, making them ideal for use in various applications.
It is essential to use materials with excellent hygienic properties in industries such as food processing and pharmaceuticals. Stainless Steel 904L seamless pipes offer excellent corrosion resistance, which makes them suitable for use in these industries. They are also easy to clean and maintain, making them an ideal choice for use in applications requiring high hygiene levels.
Stainless Steel 904L seamless pipes offer excellent value for money, especially compared to other high-performance alloys. Their durability and corrosion resistance reduce maintenance costs, longer service life, and reduced downtime. Additionally, their excellent weldability means they can be easily fabricated, further reducing costs associated with installation and maintenance.
Besides marine applications, 904l stainless steel pipe are used in various other industries, such as chemical processing, oil and gas, and pharmaceuticals. In chemical processing applications, these pipe can handle highly aggressive chemicals like sulfuric acid. These pipe are often used in corrosive wells and offshore rigs in the oil and gas industry. The pharmaceutical industry uses them for various applications where corrosion resistance and cleanliness are critical.
904L stainless steel pipe is an excellent choice of material for the chemical industry. Its resistance to corrosion, high-temperature resistance, high purity levels, aesthetic appeal, and durability all contribute to making it an ideal material for chemical manufacturing. Given these benefits, it is no surprise that 904L stainless steel pipe is quickly becoming the preferred choice of material in the chemical industry. Its benefits are apparent. They improve efficiency, safety, and cost-effectiveness in the chemical manufacturing process.
In conclusion, Stainless Steel 904L seamless pipes are an excellent choice for a wide range of high-performance applications. They offer superior corrosion resistance, high tensile strength, and excellent weldability, making them ideal for harsh environments. Additionally, they offer hygienic properties, easy maintenance, and a cost-effective solution for industries that require high-performance alloys. When considering your material requirements for your application, JN Alloy can provide you with professional advice and prices.
