France · AFNOR NF

TS E 290

NF A49-401

Chemical composition

wt% · log scale
0.010.1110C0.17Mn1.2Nb0.4P0.03S0.025Si0.35
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≤290 MPaTensile strength Rm≤420 MPaElongation A≤22 %steel tubes, welded steel tube, welded condition, < 457 mmYield strength Rp0.2≤290 MPaTensile strength Rm≤420 MPaImpact energy Kv/Ku≤35 JElongation A≤22 %steel tubes, welded steel tube, welded condition, >= 457 mmHardness焊接钢管  焊接处理  >= 457 mm  (横向)Hardness焊接钢管  焊接处理  < 457 mm  (纵向)steel tubes, HV

Chemical composition

ElementminmaxSimilarRemarks
C0.17
Mn1.2
Nb0.4
P0.03
S0.025
Si0.35

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
steel tubes, welded steel tube, welded condition, < 457 mm≤290≤420≤22
steel tubes, welded steel tube, welded condition, >= 457 mm≤290≤420≤22≤35
steel tubes, HV焊接钢管  焊接处理  >= 457 mm  (横向) 280；焊接钢管  焊接处理  < 457 mm  (纵向) 280