China · YB

45B

YB/T 037:2005 — Quality structure cold-draw flat steels

Chemical composition

ElementminmaxSimilarRemarks
B0.00050.0035
C0.420.49
Mn0.60.9
Si0.170.37

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
flats, cold drawnHB ≤255
flats, annealed, tempered or normalized temperedHB ≤229