Stainless Steel Coil NACE MR0175 Standards 0.5mm-6mm UNS N08904 Material
Stainless Steel Coil NACE MR0175 Standards 0.5mm-6mm UNS N08904 Material
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.
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 |
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. |
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