Steel Flanges

ASTM A694 – Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service Chemical Compositions (max, %) C Mn P S Si Heat Analysis 0.26 1.40 0.025 0.025 0.15-0.35 Product Analysis 0.265 1.44 0.030 0.030 0.10-0.40 Mechanical Properties (min ) Grade Tensile Strength MPa Yield Strength MPa Elongation in 2 in. or 50 mm,% F42 415 290 20 F46 415 315 20 F48 425 330 20 F50 440 345 20 F52 455 360 20 F56 470 385 20 F60 515 415 20

ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service Grade: F51 Ferritic-Austenitic Stainless Steel Chemical Requirements max, % Elements F51 (S31803) Carbon 0.030 Manganese 2.00 Phosphorus 0.030 Sulfur 0.020 Silicon 1.00 Nickel 4.5-6.5 Chromium 21.0-23.0 Molybdenum 2.5-3.5 Nitrogen 0.08-0.20 Tensile and Hardness Requirements Grade Symbol F51 (S31803) Tensile Strength,min, ksi [Mpa] 90[620]

item Description of flanges unit quantity 1 ASME B16.5 flange, WNRF,2″, class300, Sch80, A182 F9,NACE MR0103 PC 12 2 ASME B16.5 flange, WNRF,3″, class300, Sch80, A182 F9,NACE MR0103 PC 8 3 ASME B16.5 flange, WNRF,4″, class300, Sch80, A182 F9,NACE MR0103 PC 4