Super Austenitic 904L Stainless Steel Seamless Pipe
AISI 904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids,particularly sulphuric acid. It is also highly resistant to chloride attack – both pitting crevice corrosion and stress corrosion cracking. This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures. 904L does have very substantial contents of the high cost ingredients nickel and molybdenum. Many of the applications in which this grade has previously performed well can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205).
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Description
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of super austenitic 904l stainless steel seamless pipe in China. With abundant experience, we warmly welcome you to wholesale customized super austenitic 904l stainless steel seamless pipe from our factory. For price consultation, contact us.
AISI 904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids,particularly sulphuric acid. It is also highly resistant to chloride attack – both pitting crevice corrosion and stress corrosion cracking. This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures. 904L does have very substantial contents of the high cost ingredients nickel and molybdenum. Many of the applications in which this grade has previously performed well can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205).
Super austenitic 904L Stainless Steel seamless Pipe (UNS: N08904; EN: 1.4539) is a high alloy austenitic stainless steel with low carbon content. It has good corrosion resistance in dilute sulfuric acid, and is specially designed for harsh corrosion conditions. It has high chromium content and enough nickel content. The addition of copper makes it have strong acid resistance, especially to chloride gap corrosion and stress corrosion cracking. 904L Stainless Steel seamless Pipe is not easy to appear corrosion spots and cracks. Its pitting corrosion resistance is slightly better than other steel grades. It has good machinability and weldability, and can be used in pressure vessels
Our product range in 1.4539 are tubes and pipes, fittings and flanges, accessories.
1. Commodity: Seamless Stainless Steel Pipe ASTM B677 UNS N08904/904L
2. Material: UNS N0904L Stainless Steel Pipe(Tube) Standards
3. Standards:
ASTM A 312 – seamless, welded, and heavily cold worked austenitic stainless steel pipes
ASTM A 213 – seamless ferritic and austenitic alloy-steel boiler, super heater, and heat-exchanger tubes
ASTM A 269 – seamless and welded austenitic stainless steel tubing for general service
ASTM B 677 – uns n08904, uns n08925, and uns n08926 seamless pipe and tube8904/904L
4. Size:
A) NPS: 1/8″ to 8″
B) Schedule: 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S, acc. To ANSI B36.19
ASTM Material grade: N08904, 904L,
European material grade : X1NiCrMoCu25-20-5, 1.4547
Chemical Composition Of ASTM A312 TP 904L Pipes,
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
Cu |
|
|
904L |
min. max. |
– 0.02 |
– 2 |
– 1 |
– 0.045 |
– 0.035 |
19 23 |
4 5 |
23 28 |
1 2 |
Mechanical Properties Of ASTM B677 A312 904L Stainless Steel Seamless Tubes
|
Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness |
|
|
Rockwell B (HR B) |
Brinell (HB) |
||||
|
904L |
490 |
220 |
36 |
70-90 typical |
150 |
ASTM A312 TP 904L Stainless Steel Seamless Tubes Physical Properties
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 904L | N08904 | 904S13 | – | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 | – |
Grade Specifications For 904L Pipes
|
Coefficient of thermal expansion ( x10-6 K-1 ) |
16-18 @ 20-100°C |
|
Maximum use temperature in air ( °C ) |
800 |
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