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| Technical Data Sheet of Stainless Steel Pipe & Tube | |
| Product Name |
AISI 904L (UNS N08904, DIN 1.4539) Stainless Steel Seamless Pipes & Tubes |
| Equivalent Materials | AISI 904L, UNS N08904, DIN 1.4539, AISI 904L, SUS 890L, NAS 255, 00Cr20Ni25Mo4.5Cu, X1NiCrMoCu25-20-5 |
| Type | Seamless |
| Shape | Square / Rectangular / Round |
| Standard |
GB,AISI,ASTM,DIN,EN,JIS ASTM A240/ASME SA-240、ASTM A276、ASTM A182/ASME SA-182、ASTM A312/ASMES A312 ASTM B625/ASME B625、ASTM B673/ASME B673 |
| Available Grades |
Stainless steel 301 / 302 / 303 / 304 / 304L / 310S / 316L / 316Ti / 316LN / 317L / 904L / 2205 / 2507 / 321 / 32760 / 253MA / 254SMo / 410 / 420 / 430 / Custom465 / XM-19 / S31803 / S32750 / S32205 / F50 / F60 / F55 / F60 / F61 / F65. Nitronic 30 / Nitronic 32 / Nitronic 33 / Nitronic 40 / Nitronic 50 / Nitronic 60 etc. |
| Monel 400 / Monel K-500 | |
| Inconel 600 / Inconel 601 / Inconel 625 / Inconel 617 / Inconel 690 / Inconel 718 / Inconel X-750 / Inconel 713C / Inconel 713LC | |
| Incoloy A-286 / Incoloy 800 / Incoloy 800H / Incoloy 800HT | |
| Incoloy 825 / Incoloy 901 / Incoloy 925 / Incoloy 926 | |
| Nimonic 75 / Nimonic 80A / Nimonic 90 / Nimonic 105 / Nimonic C263 / L-605 | |
| Hastelloy B / Hastelloy B-2 / Hastelloy B-3 / Hastelloy C / Hastelloy C-276 / Hastelloy C-22 | |
| Hastelloy C-4 / Hastelloy C-2000 / Hastelloy G-35 / Hastelloy X / Hastelloy N | |
| PH stainless steel 15-5PH / 17-4PH / 17-7PH | |
| Out diameter | Seamless Pipe 6MM - 1174MM or customized |
| Thickness | Seamless Pipe 1mm - 80mm or customized |
| Max Length | Seamless Pipe 12000mm or customized |
| Finish | 2B, Pickling, Polished, Brushed, Sandblast, BA, EP |
| Packing | waterproof polybag, wooden box, end cap, wooden crame/pallet |
| Inspection | TUV,SGS,BV,ABS,LR and so on |
| Application | Chemical, Pharmaceutical & Bio-Medical, Petrochemical & Refinery, Environmental, Food Processing, Aviation, Chemical Fertilizer, Sewage Disposal, Desalination, Waste Incineration etc. |
| Processing Service | Machining : Turning / Milling / Planing / Drilling / Boring / Grinding / Gear Cutting / CNC Machining |
| Deformation processing : Bending / Cutting / Rolling / Stamping | |
| Welded | |
| Forged | |
| Delivery Time | 7-40 days |
| Trade Term | FOB CIF CFR CIP DAP DDP EXW |
| Payment | T/T, L/C,D/A,D/P, Western Union,MoneyGram,According to customer requirements payments for offline orders. |
| Transportation | By air, by sea, by train, by truck |
| Sample | Free |
| Warranty | Trade assurance after sales service |
Product Details of ASTM A312 904L Stainless Steel Seamless Pipes：
Overview of AISI 904L Stainless Steel Seamless Pipes:
904L super austenitic stainless steel is a low-carbon, high-nickel, molybdenum austenitic stainless and acid-resistant steel, which is a proprietary material imported from France H·S. It 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 good corrosion resistance in neutral chloride-containing media It has good pitting corrosion resistance and good resistance to crevice corrosion and stress corrosion. It is suitable for sulfuric acid of various concentrations below 70°C, and has good corrosion resistance in acetic acid at any concentration and at any temperature and the mixed acid of formic acid and acetic acid under normal pressure.
Super austenitic stainless steel 904L (00Cr20Ni25Mo4.5Cu; 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 corrosion conditions. Designed for harsh environments. It has a high chromium content and sufficient nickel content. The addition of copper makes it highly resistant to acid, especially to chloride crevice corrosion and stress corrosion cracking. It is not easy to appear corrosion spots and cracks, and is resistant to spots. Corrosion ability is slightly better than other steel grades, has good workability and weldability, and can be used in pressure vessels.
Chemical Composition of ASTM A312 UNS N08904 Seamless Pipe:
|
alloy
|
%
|
nickel
|
chromium
|
molybdenum
|
copper
|
iron
|
carbon
|
manganese
|
silicon
|
phosphorus
|
sulfur
|
|
904L
|
min
|
23
|
19
|
4
|
1
|
margin
|
|
|
|
|
|
|
|
max
|
28
|
twenty three
|
5
|
2
|
|
0.02
|
2
|
1
|
0.045
|
0.035
|
Physical Properties of ASME SA312 SS 904L Seamless Pipes:
Density: 8.24g/cm3
Melting point: 1300-1390 ℃
Magnetism: None
Heat treatment: heat preservation between 1100-1150℃ for 1-2 hours, rapid air cooling or water cooling.
Mechanical Properties of Stainless Steel 904L Seamless Pipes:
|
Alloy state
|
tensile strength
Rm N/mm2
|
Yield Strength
RP0.2N/mm2
|
Elongation
A5%
|
|
904L
|
490
|
216
|
35
|
Since the carbon content of 904L is very low (maximum 0.020%), there will be no carbide precipitation in the case of general heat treatment and welding. This eliminates the risk of intergranular corrosion that occurs after general heat treatment and welding. Due to the high content of chromium, nickel and molybdenum and the addition of copper, 904L can be passivated even in reducing environments such as sulfuric acid and formic acid. The high nickel content makes it have a lower corrosion rate in the active state.
In pure sulfuric acid in the concentration range of 0~98%, the operating temperature of 904L can be as high as 40 degrees Celsius.
In pure phosphoric acid in the concentration range of 0-85%, its corrosion resistance is very good. In the industrial phosphoric acid produced by the wet process, impurities have a strong influence on the corrosion resistance. Among all kinds of phosphoric acid, 904L has better corrosion resistance than ordinary stainless steel. Among the strong oxidizing nitric acid, 904L has lower corrosion resistance than high-alloyed steel without molybdenum. In hydrochloric acid, the use of 904L is limited to a lower concentration of 1-2%.
In this concentration range, the corrosion resistance of 904L is better than that of conventional stainless steel. 904L stainless steel pipe has high resistance to pitting corrosion. Its crevice corrosion resistance in chloride solution is also very good. The high nickel content of 904L reduces the corrosion rate at the pits and crevices. Ordinary austenitic stainless steel may be sensitive to stress corrosion in a chloride-rich environment when the temperature is higher than 60 degrees Celsius. By increasing the nickel content of stainless steel, this sensitization can be reduced. Due to the high nickel content, 904L stainless steel tube has high resistance to stress corrosion cracking in chloride solution, concentrated hydroxide solution and hydrogen sulfide environment.
Matching welding materials: welding rod (E385-16/17), welding wire (ER385).
Application of ASTM A312 904L Stainless Steel Seamless Pipe:
* Petroleum and petrochemical equipment, such as reactors in petrochemical equipment, etc.
* Sulfuric acid storage and transportation equipment, such as heat exchangers, etc.
* Power plant flue gas desulfurization device, the main use parts are: the tower body of the absorption tower, flue, gate plate, internal parts, spray system, etc.
* Scrubber and fan in the organic acid treatment system.
*Sea water treatment equipment, sea water heat exchanger, paper industry equipment, sulfuric acid, nitric acid equipment, acid making, pharmaceutical industry and other chemical equipment, pressure vessels, food equipment.
*Pharmaceutical factories: centrifuges, reactors, etc.
*Plant food: soy sauce cans, cooking wine, salt cans, equipment and dressings.
* 904L is a matched steel grade for the strong corrosive medium of dilute sulfuric acid.
For more information about AISI 904L (UNS N08904, DIN 1.4539) Stainless Steel Seamless Pipes & Tubes, please call +86-731-82250427 or send an Email to [marketing@ronsteel.com]
