ASTM A182 – Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High Temperature Service Grade: F9 Chemical Requirements   max,% Elements A182 F9 Carbon 0.150 Manganese 0.30-0.60 Phosphorus 0.030 Sulfur 0.030 Silicon 0.50-1.00 Nickel … Chromium 8.0-10.0 Molybdenum 0.90-1.10   Tensile and Hardness Requirements Grade A 182 F9 Tensile Strength,min,…