China · YB

Q420-A

YB/T 024:2008 — Steel strips for cable armouring

Chemical composition

wt% · log scale
0.0010.010.1110C0.2Cr0.3Cu0.3Mn1.7Mo0.2N0.015Nb0.07Ni0.8P0.035S0.035Si0.5Ti0.2V0.2
  • min – max range
  • typical value

Mechanical properties

value range by condition
Tensile strength Rm≥295 MPaElongation A≥20 %steel strip, 0.2mm < t <= 0.3mm, tTensile strength Rm≥295 MPaElongation A≥17 %steel strip, t <= 0.2mm, tImpact energy Kv/Ku1 Jsteel strip, t <= 0.5mm, tTensile strength Rm≥295 MPaElongation A≥20 %steel strip, t > 0.3mm, t

Chemical composition

ElementminmaxSimilarRemarks
C0.2
Cr0.3
Cu0.3
Mn1.7
Mo0.2
N0.015
Nb0.07
Ni0.8
P0.035
S0.035
Si0.5
Ti0.2
V0.2

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
steel strip, 0.2mm < t <= 0.3mm, t≥295≥20 Lo=50mm
steel strip, t <= 0.2mm, t≥295≥17 Lo=50mm
steel strip, t <= 0.5mm, t1
steel strip, t > 0.3mm, t≥295≥20 Lo=80mm
steel strip, t > 0.5mm, t2.95