China · YB

08

YB/T 4222:2010 — Coated steel wire for overhead line helical fittings

Chemical composition

ElementminmaxSimilarRemarks
C0.050.11
Cr0.1
Cu0.25
Mn0.350.65
Ni0.3
Si0.170.37

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
Condition not stated≥4
steel wire 1.75mm < d ≤ 2.25mm≥1450
steel wire 2.25mm < d ≤ 2.75mm≥1410
steel wire 2.75mm < d ≤ 3mm≥1410
steel wire 3.5mm < d ≤ 4.25mm≥1380
steel wire 3mm < d ≤ 3.5mm≥1410
steel wire 4.25mm < d ≤ 4.75mm≥1380
steel wire d > 4.75mm≥1380