Romania · STAS

K55

SR EN ISO 11960

Chemical composition

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

Mechanical properties

value range by condition
Yield strength Rp0.2379–552 MPaTensile strength Rm≥655 MPaElongation A12–20 %

Chemical composition

ElementminmaxSimilarRemarks
P0.03
S0.03

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
Casing and tubing, Heat treated379–552≥655 Total elongation under load:0.5%12–20 Lo=50.80mm