DIN 2573 (PN6) and DIN 2576 (PN10) are legacy German standards for plate flanges, now used globally for low-pressure systems. When forged from 904L (1.4539) Super-Austenitic stainless steel, these flanges provide peerless resistance to sulfuric and phosphoric acids. This high-nickel, high-molybdenum alloy prevents pitting and stress corrosion cracking in severe chemical processing environments. The plate design ensures a low-profile, weld-on connection that is both cost-effective and highly durable.
technical attributes
Standard: DIN 2573 / DIN 2576
Material Grade: 904L / 1.4539
Alloy Class: Super-Austenitic
Pressure Rating: PN6 / PN10
Flange Type: Plate (Slip-On)
Size Range: DN10 to DN1000
Manufacturing: Forged or Machined Plate
Facing Type: Form A (Flat Face)
Nickel Content: 23.0 to 28.0 percent
Chromium Content: 19.0 to 23.0 percent
Molybdenum: 4.0 to 5.0 percent
Copper Content: 1.0 to 2.0 percent
Yield Strength: Min 220 MPa
Tensile Strength: 520 to 670 MPa
Corrosion Type: Acidic / Sulfuric Service
Weldability: Excellent (Low Carbon)
Hardness: Max 150 HBW
Certification: EN 10204 3.1
Contact: Jorge Yang
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