Super Austenitic 904L Stainless Steel Coil NACE MR0175 For Chemical Processing
Super Austenitic 904L Stainless Steel Coil, NACE MR0175, Chemical Processing
Super Austenitic 904L Stainless Steel Coil is engineered for extreme corrosive environments, offering unparalleled resistance to sulfuric acid, phosphoric acid, and chloride-induced stress corrosion cracking. Designed to meet NACE MR0175 standards for sour gas (H₂S) environments, this high-alloy coil is the material of choice for chemical processing, oil and gas, and marine industries. With a unique composition rich in nickel, molybdenum, and copper, 904L excels in both acidic and alkaline media while maintaining exceptional toughness at sub-zero temperatures. Available in thicknesses from 0.5mm to 6mm, it ensures reliability in critical applications like reactors, heat exchangers, and offshore piping systems.
2. Detailed Specifications
| Parameter | Details |
|---|---|
| Material | UNS N08904 / EN 1.4539 (904L) |
| Element Composition | Cr: 19-23%, Ni: 23-28%, Mo: 4-5%, Cu: 1-2%, Mn: ≤2%, C: ≤0.02%, Fe: Balance |
| Thickness | 0.5mm – 6.0mm (±0.05mm tolerance) |
| Width | 600mm – 2000mm (customizable) |
| Surface Finish | Annealed & Pickled (AP) or Electrolytically Polished (EP) |
| Tensile Strength | 490 MPa (min) |
| Yield Strength | 220 MPa (min) |
| Elongation | 35% (min) |
| Certifications | NACE MR0175, ASTM A240, EN 10088-3, PED 2014/68/EU, TÜV SÜD |
| Applications | Sulfuric acid reactors, offshore oil rig pipelines, seawater desalination plants |
3. Why Import Our 904L Stainless Steel Coil?
Competitive Advantages
- Unmatched Corrosion Resistance: Outperforms 316L in sulfuric acid (>95% concentration) and seawater.
- Sour Gas Compliance: Certified for H₂S environments under NACE MR0175 for oil/gas applications.
- Cost Efficiency: 25% lower pricing than European suppliers with identical certifications.
- Custom Fabrication: Precision slitting, edge conditioning, and EP polishing for ultra-smooth surfaces.
Key Selling Points
- Zero Failure Guarantee: 100% eddy current and ultrasonic testing to eliminate defects.
- Thermal Stability: Maintains integrity in cyclic temperatures (-50°C to 250°C).
- Fast Delivery: Ready stock for 1-4mm thicknesses; 15-day lead time for custom orders.
- Sustainability: 70% recycled content with ISO 14064-certified low-carbon production.
- Technical Support: Free corrosion resistance reports and welding procedure specifications (WPS).
4. Critical Applications in Harsh Environments
| Industry | Use Cases |
|---|---|
| Chemical Processing | Sulfuric acid concentrators, phosphoric acid evaporators, chlorine dioxide reactors. |
| Oil & Gas | Subsea umbilicals, sour gas scrubbers, LNG heat exchanger tubes. |
| Marine Engineering | Seawater reverse osmosis (SWRO) systems, shipboard piping, offshore platform manifolds. |
| Pharmaceutical | High-purity chemical storage tanks, API synthesis vessels, solvent recovery units. |
| Mining & Metallurgy | Copper electrowinning cells, acid mine drainage pumps, smelter gas cleaning systems. |
FAQ:
Q: Are you a manufacturer or trading company?
A: We are a factory with 12 years of sales experience.
Q: Where is your factory located?
A: Our factory is located in Wuxi City, Jiangsu Province, China.
Q: How can I get samples?
A: There are always pre-production samples before mass production; there is always final inspection before shipment;
Q: What payment methods do you offer?
A: Accepted delivery terms: FOB, CFR, CIF, EXW, Express; Accepted payment currencies: USD, RMB; Accepted payment methods: T/T, L/C,
Credit Card, Western Union, Cash;
Q: What are your after-sales service details?
A: 1) We provide necessary technical support to all customers, such as material properties and heat treatment data suggestions.
2) We provide suitable steel technical parameters for customers in Germany, the United States, Japan, the United Kingdom and other countries.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.