A234 WPB

A234  WPB is a kind of carbon steel international material. This kind of material is used on the condition of middle and high temperature. The component mainly include C, Si, Mn, P,S and the percentage is C no more than 0.3, Si no less than 0.1 Mn  from 0.29 to 1.06, P no more than 0.05, S no more than 0.058. The Tension is 415 to 585 Mpa. Yielding is no less than 240 Mpa. Elongation is 20% and hardness HB is no more than 197. WPB is normally named in carbon steel pipe fittings. If in steel pipes the carbon steel material is ASTM A106 GrB.