The ASTM A420 WPL6 LR 90° Elbow is a low-temperature carbon steel fitting specifically designed for sub-zero service. It is the industry standard for pipelines handling liquefied gases, refrigerated chemicals, and arctic environments. As a Long Radius (LR) elbow, it provides a smooth $1.5D$ curvature to minimize turbulence. Its Butt Welding (BW) ends ensure a high-integrity, leak-proof joint that maintains exceptional impact toughness down to $-45^\circ\text{C}$ ($-50^\circ\text{F}$).
Technical Attributes: ASTM A420 WPL6 LR 90° Elbow
Material Grade,ASTM A420 WPL6 (Low-Temp Carbon Steel)
Fitting Type,90 Degree Long Radius (LR) Elbow
Center-to-End Dim,1.5× Nominal Pipe Size (1.5D)
Manufacturing Std,ASME B16.9 / MSS SP-75
End Connection,Butt Welding (BW)
End Preparation,Beveled Ends per ASME B16.25
Service Temperature,Minimum −45∘C (−50∘F)
Impact Testing,Charpy V-Notch Required (18J Min Avg)
Size Range,1/2" to 48" (DN15 - DN1200)
Wall Thickness,"SCH 40, SCH 80 (XS), SCH 160, SCH XXS"
Heat Treatment,Normalized or Quenched and Tempered
Tensile Strength,415–585 MPa (60–85 ksi)
Yield Strength,≥240 MPa (35 ksi)
Chemical Comp,"C≤0.30, Mn:0.50–1.35, Si:0.15–0.40"
Testing Standard,"Hydrostatic, Tensile, Charpy Impact, NDT"
Surface Treatment,Anti-rust Oil / Black Paint / Galvanized
Traceability,Heat Number Hard Stamped
Certification,EN 10204 3.1 / MTR
Applicable Service,"Cryogenic, Refrigeration, Arctic Pipelines"
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