ASTM Carbon steel fittings composition

Chemical Composition of ASTM A234 WPB & WPC
Element Content, %
ASTM A234 WPB ASTM A234 WPC
Carbon [C] ≤0.30 ≤0.35
Manganese [Mn] 0.29-1.06 0.29-1.06
Phosphorus [P] ≤0.050 ≤0.050
Sulfur [S] ≤0.058 ≤0.058
Silicon [Si] ≥0.10 ≥0.10
Chromium [Cr] ≤0.40 ≤0.40
Molybdenum [Mo] ≤0.15 ≤0.15
Nickel [Ni] ≤0.40 ≤0.40
Copper [Cu] ≤0.40 ≤0.40
Vanadium [V] ≤0.08 ≤0.08