SS 316L Blind Flanges

The SS 316L Blind Flange (BL) is a solid, flat disc forging without a bore or opening. It is used to seal the end of a piping system, valve opening, or pressure vessel during hydrostatic testing, pipeline commissioning, or future expansion. Since the blind flange experiences high mechanical stress due to the full internal pressure of the pipe acting on its face, it is a critical component that requires high structural integrity. The 316L designation ensures a low carbon content, which is important even for non-welded applications near heat, as it preserves the material's excellent corrosion resistance by preventing sensitization. The inclusion of Molybdenum provides superior defense against pitting and crevice corrosion in harsh, chloride-rich environments. Zeron Fasteners manufactures and supplies reliable, high-pressure SS 316L Blind Flanges that conform to standards like ASME B16.5 and ASTM A182 F316L, ensuring a secure and durable seal for all service conditions.

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SS 316L Blind Flanges Manufacturer in India

SS 316L Blind Flanges Chemical Composition

Element Composition (Max %)
Carbon (C) 0.030
Manganese (Mn) 2.00
Silicon (Si) 1.00
Phosphorus (P) 0.045
Sulfur (S) 0.030
Chromium (Cr) 16.0 – 18.0
Nickel (Ni) 10.0 – 14.0
Molybdenum (Mo) 2.00 – 3.00

SS 316L Blind Flanges Mechanical Properties

Property Value (ASTM A182 F316L)
Tensile Strength 485 MPa 70,000 psi
Yield Strength (0.2% Offset) 170 MPa 25,000 psi
Elongation 30%
Hardness 190 HB

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