China · YB

EH40

YB/T 4159:2007 — Hot rolling checker plate and strip

Chemical composition

wt% · log scale
0.0010.010.1110Al0.015C0.18Cr0.2Cu0.35Mn0.9 – 1.6Mo0.08Nb0.02 – 0.05Ni0.4P0.025S0.025Si0.5Ti0.02V0.05 – 0.1
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥390 MPaTensile strength Rm510–660 MPaElongation A≥20 %steel productsImpact energy Kv/Ku≥31 JImpact energy Kv/Ku≥46 Jsteel products 50mm < t ≤ 70mmImpact energy Kv/Ku≥37 JImpact energy Kv/Ku≥55 Jsteel products 70mm < t ≤ 150mmImpact energy Kv/Ku≥27 JImpact energy Kv/Ku≥41 Jsteel products t ≤ 50mm

High / low temperature

value vs. temperature
23.632.341.049.758.4-40-40°C
  • 70mm < t ≤ 150mm · Impact energy Kv/Ku
  • 50mm < t ≤ 70mm · Impact energy Kv/Ku
  • t ≤ 50mm · Impact energy Kv/Ku

Chemical composition

ElementminmaxSimilarRemarks
Al0.015
C0.18
Cr0.2
Cu0.35
Mn0.91.6
Mo0.08
Nb0.020.05
Ni0.4
P0.025
S0.025
Si0.5
Ti0.02
V0.050.1

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
steel products≥390510–660≥20
steel products 50mm < t ≤ 70mm≥31 横向；Charpy V Notch (-40°C)；≥46 纵向；Charpy V Notch (-40°C)
steel products 70mm < t ≤ 150mm≥37 横向；Charpy V Notch (-40°C)；≥55 纵向；Charpy V Notch (-40°C)
steel products t ≤ 50mm≥27 横向；Charpy V Notch (-40°C)；≥41 纵向；Charpy V Notch (-40°C)

High/low temperature

Impact energy Kv/Ku (J)
ConditionTemperature ℃minRemarks
70mm < t ≤ 150mm-4037横向
70mm < t ≤ 150mm-4055纵向
50mm < t ≤ 70mm-4031横向
50mm < t ≤ 70mm-4046纵向
t ≤ 50mm-4027横向
t ≤ 50mm-4041纵向