United States · API

S-135

API 5D — Specification for Drill Pipe

Chemical composition

wt% · log scale
0.010.1P0.03S0.03
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2931–1138 MPaTensile strength Rm≥1000 MPaImpact energy Kv/Ku≥54 JElongation A≥13.5 %

Chemical composition

ElementminmaxSimilarRemarks
P0.03
S0.03

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
Seamless tubes, normalized and tempered or quenched and tempered931–1138≥1000≥13.5≥54