API 5L X70 PSL 2

a unless otherwise agreed, the sum of th niobium & vanadum concentrations shall be = 0.06% b Unless otherwise agreed, 0.50% maximum for copper, 0.30% maximum for nickel, 0.30% maximum for chromium, & 0.15% maximum for molybdenum. c the sum of th niobium & vanadum & titanium concentrations shall be =0.15% d Unless otherwise agreed, 0.50% maximum for copper, 0.30% maximum for nickel, 0.30% maximum for chromium, & 0.15% maximum for molybdenum. e Unless otherwise agreed g unless otheriwse agreed the sum of th niobium & vanadum & titanium concentrations shall be =0.15%