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Alloy 904L / UNS N8904 Stainless Steel Pipes Tubing Seamless Steel Pipe for Chemical Area
| Place of Origin | China |
|---|---|
| Brand Name | DELTA |
| Certification | ISO |
| Model Number | 904L |
| Minimum Order Quantity | 500 kgs |
| Price | 10-15 USD/Kg |
| Packaging Details | standard packing for export |
| Delivery Time | 5 - 14 days based on the quantity |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 3 Ton per week |
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xProduct Details
| Products | Stainless Steel Seamless Pipe | Grade | 904L |
|---|---|---|---|
| Diameter | DN10 - DN400 | Length | 6m Or Custom Cutting Any Length As Request |
| Standard | ASTM EN | Service | Cutting |
| Loading Port | Shanghai Port | Thickness | 4.0 - 50.0mm |
| Highlight | Alloy 904L stainless steel pipes,Seamless steel pipe for chemical area,UNS N8904 stainless steel tubing |
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Product Description
Alloy 904L / UNS N8904 Stainless Steel Pipes Tubing Seamless Steel Pipe for Chemical Area
Products Specification
| Products Name | 904L Stainless Steel Seamless Pipe |
Grade: |
304 304L 309S 310S 314 315 316L 316Ti 317L 321 329 347H 410 2205 2507 S32760 904L 254SMO and equal grade in GB JIS EN DIN Standard |
| Standards: | ASTM A213M-94b ASTM A249M-94a ASTM A269-94a ASTM A312M-94b,ect. ASTM A790 |
| DIN 17456-85 DIN 17458-85 DIN 17459-92.ect | |
| JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994,ect. | |
| GB13296-1991 GB14975-2002 GB14976-2002,ect. | |
| Size: | ND5 - DN400 |
| Length: | 6m length or cutting any length as request |
| Applications: | fluid and gas transport, structure , boiler, heat exchanger, super heater |
Alloy 904L (UNS N8904) seamless steel pipes are high-performance materials engineered for extreme corrosion resistance in chemical processing and industrial environments. This super austenitic stainless steel offers a unique combination of mechanical strength, formability, and durability, making it ideal for applications involving aggressive acids, chlorides, and high-temperature conditions.
Key Parameters
Chemical Composition of 904L Stainless Steel Pipe
- Carbon (C): ≤0.03%
- Chromium (Cr): 18.0–20.0%
- Nickel (Ni): 23.0–25.0%
- Molybdenum (Mo): 3.0–4.0%
- Copper (Cu): 4.0–5.0%
- Manganese (Mn): ≤2.00%
- Silicon (Si): ≤1.00%
- Phosphorus (P): ≤0.035%
- Sulfur (S): ≤0.030%
Mechanical Properties of 904L Stainless Steel Pipe
- Tensile Strength: ≥490 MPa
- Yield Strength (0.2% Offset): ≥216 MPa
- Elongation at Break: ≥35%
- Hardness: ≤230 HB
Physical Properties of 904L Stainless Steel Pipe
- Density: 8.24 g/cm³
- Melting Point: 1300–1390°C
- Thermal Conductivity: ~10 W/m·K (at 100°C)
- Maximum Service Temperature: 450°C
Standards of 904L Stainless Steel Pipe
Alloy 904L seamless pipes comply with international and industry standards, including:
- ASTM A312 / ASME SA-312 (seamless and welded pipes)
- EN 10216-5 (seamless steel tubes for pressure purposes)
- DIN 1.4539 (German standard equivalent)
- JIS SUS 890L (Japanese specification)
- ASTM B677 (seamless tubes for general corrosion resistance)
Performance Advantages of 904L Stainless Steel Pipe
-
Exceptional Corrosion Resistance
- Acidic Environments: Resistant to sulfuric, phosphoric, and acetic acids, even at high concentrations .
- Chloride Resistance: Strong immunity to pitting, crevice corrosion, and stress corrosion cracking (SCC) in chloride-rich media like seawater and brine .
- Passive Film Stability: High chromium and molybdenum content form a protective oxide layer, ensuring long-term durability .
-
Mechanical Integrity
- Retains strength and toughness across a wide temperature range, including cryogenic conditions .
- Excellent weldability with nickel-based fillers (e.g., Alloy 625) .
-
Formability
- Easy to fabricate into complex shapes without compromising corrosion resistance .
Equivalent Grades
- UNS N08904 (USA)
- EN 1.4539 / DIN 1.4539 (Europe)
- JIS SUS 890L (Japan)
- 00Cr20Ni25Mo4.5Cu (China)
- NAS 255 (Japan)
Packaging of 904L Stainless Steel Pipe
To ensure safe transportation and storage, Alloy 904L pipes are:
- Protected Internally/Externally: Coated with anti-corrosive oil or plastic film .
- Ends Sealed: Fitted with plastic caps to prevent debris ingress .
- Bundle Secured: Wrapped in waterproof paper or woven fabric, then strapped with steel bands or placed in wooden crates .
- Marine-Grade Packaging: Suitable for long-distance shipping, including ocean transport .
Applications of 904L Stainless Steel Pipe
Alloy 904L seamless pipes excel in demanding chemical and industrial sectors:
-
Chemical Processing
- Reactors, heat exchangers, and pipelines handling sulfuric acid, fertilizers, and organic solvents .
-
Oil & Gas
- Offshore platforms, seawater injection systems, and refinery equipment exposed to chloride and H₂S .
-
Pharmaceutical & Food Industries
- Sanitary pipelines and reactors requiring corrosion resistance and compliance with hygiene standards .
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Environmental Engineering
- Flue gas desulfurization (FGD) systems, wastewater treatment plants, and acid recovery units .
-
Marine & Desalination
- Seawater desalination plants, condensers, and marine heat exchangers .
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