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ASME SA 266 sa266 SA-266 Grade 4 gr 4 Gr. 4 Gr.4 Gr4 Girth flange Channel cover Long welding neck Nozzle neck Flanges Cover Flange ASTM A266 Grade 4 Gr4 cl4 Class 4 Cl.4 GR II Cl-4 Cl. 4
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The chemical compostion of ASME SA 266 sa266 Grade 4 gr 4 Gr. 4 Gr.4 Gr4 forged material is as follows
Iron (Fe)98 to 99.05 %
Manganese (Mn)0.8 to 1.4%
Silicon (Si)0.15 to 0.35 %
Carbon (C)0 to 0.3 %
Phosphorus (P)0 to 0.025 %
Sulfur (S)
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