South Korea · KS

PH26

KS D ISO 9330-4:2004 — KS D ISO 9330-4

Chemical composition

wt% · log scale
0.010.1110C0.21Cu0.25Mn0.4 – 1.2P0.035S0.03Si0.1 – 0.35
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥255 MPaTensile strength Rm410–530 MPaImpact energy Kv/Ku≥27 JElongation A≥21 %welded steel tube;16 < t ≤ 40 mm, normalizedYield strength Rp0.2≥265 MPaTensile strength Rm410–530 MPaElongation A≥21 %welded steel tube;t ≤ 16 mm, normalizedYield strength Rp0.2≥245 MPaTensile strength Rm410–530 MPaImpact energy Kv/Ku≥27 JElongation A≥21 %welded steel tube;t > 40 mm, normalized

Chemical composition

ElementminmaxSimilarRemarks
C0.21
Cu0.25May be requested by the purchaser
Mn0.41.2
P0.035
S0.03
Si0.10.35

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
welded steel tube;16 < t ≤ 40 mm, normalized≥255410–530≥21 for long.test or for trans.test Amin=19%≥27 Charpy V Notch
welded steel tube;t ≤ 16 mm, normalized≥265410–530≥21 for long.test or for trans.test Amin=19%
welded steel tube;t > 40 mm, normalized≥245410–530≥21 for long.test or for trans.test Amin=19%≥27 Charpy V Notch