Seamless 904L Stainless Steel Tube
A seamless 904L stainless steel tube refers to a tube made from the 904L stainless steel alloy without any welded seams.
Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of seamless 904l stainless steel tube in China, also supports customized service with low price. Welcome to wholesale discount seamless 904l stainless steel tube for sale here from our factory. Contact us for free sample.
Seamless 904L Stainless Steel Tube
904L (N08904, 14539) super austenitic stainless steel contains 14.0-18.0% chromium, 24.0-26.0% nickel, and 4.5% molybdenum. 904L super austenitic stainless steel is a low-carbon, high-nickel, molybdenum austenitic stainless acid-resistant steel. It has good activation-passivation transformation ability and excellent corrosion resistance. It can be used in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, Phosphoric acid has good corrosion resistance, pitting corrosion resistance in neutral chlorine-containing media, and good crevice corrosion resistance and stress corrosion resistance. It is suitable for sulfuric acid of various concentrations below 70°C. It can withstand acetic acid of any concentration and temperature under normal pressure, and has good corrosion resistance in mixed acids of formic acid and acetic acid.
Since the carbon content of 904L stainless steel pipe is very low (maximum 0.020%), there will be no carbide precipitation under normal heat treatment and welding. This eliminates the risk of intergranular corrosion that normally occurs after heat treatment and welding. Due to the high chromium nickel molybdenum content of stainless steel pipe 904l and the addition of copper elements, 904L can be passivated even in reducing environments such as sulfuric acid and formic acid. The high nickel content also results in a lower corrosion rate in the active state. In pure sulfuric acid in the concentration range of 0~98%, the service temperature of 904L steel pipe can be as high as 40 degrees Celsius. In pure phosphoric acid with a concentration range of 0~85%, its corrosion resistance is very good. In industrial phosphoric acid produced by wet processes, impurities have a strong impact on corrosion resistance.
Product Properties
Mechanical Properties of 904l pipe
|
Alloy |
Temper |
Tensile Strength |
Yield Strength, 0.2% |
Elongation in2 in. or |
|
UNS N08904 |
Solution Annealed |
71 (490) |
31 (220) |
35 |
Tolerances of 904l stainless pipe
|
Nominal Outside Diameter, mm |
Tolerances |
|||||
|
Outside Diameter, mm |
Thickness of Specified Average Wall, % |
Thickness of Specified Minimum Wall, % |
||||
|
+ |
- |
+ |
- |
+ |
- |
|
|
Cold-Worked Pipe and Tube |
||||||
|
Up to 16, excl. |
0.13 |
0.13 |
15.0 |
15.0 |
30 |
0 |
|
16 to 38, incl. |
0.19 |
0.19 |
10.0 |
10.0 |
20 |
0 |
|
38 to 89, incl |
0.25 |
0.25 |
10.0 |
10.0 |
22 |
0 |
|
89 to 114, incl. |
0.38 |
0.38 |
10.0 |
10.0 |
22 |
0 |
|
114 to 152, incl. |
0.51 |
0.51 |
12.5 |
12.5 |
25 |
0 |
|
152 to 168, incl. |
0.64 |
0.64 |
12.5 |
12.5 |
25 |
0 |
|
Hot-Finished Tube3,4 |
||||||
|
38.1 to 139.7, excl. |
0.79 |
0.79 |
12.5 |
12.5 |
28.5 |
0 |
|
139.7 to 234.95, excl |
1.19 |
1.19 |
12.5 |
12.5 |
28.5 |
0 |
Seamless 904L Stainless Steel Tube
With an annual output of 15 million tons, GNEE is the largest manufacturer of steel pipes, rectangular pipes, hollow pipes, and galvanized pipes in China. Annual sales reach US$15 billion. It has 10 galvanized pipe production lines, 13 carbon steel pipe production lines, and the largest inventory of square and rectangular pipes in China, which can meet the direct purchasing needs of customers.
FAQ
1.Q.How can I place order?
A: You can contact us by email about your order details, or place order on line.
2.Q.Do you provide custom made Products service?
A: Yes if you have your own design , we can produce according to your specification and drawing.
3.Q: How do your guarantee the quality?
A: Before mass production, there must be pre-production samples; before shipment, there must be final inspection.
4.Q.What grade is a 904L pipe?
A.Stainless Steel 904L Pipe is designed with an outstanding chemical composition of 19% to 23% of chromium with 23% to 28% of nickel and 4-5% of molybdenum.
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