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China YB Q345-A 包装用钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345-A / Q345-A
Category Grade Standard Region/Area Standard Content
Metals Q345-A YB/T 025 China 包装用钢带

Chemical composition(mass fraction)(wt.%) of the Q345-A

Element Min Max Similar
Mo - 0.1000 -
N - 0.0120 -
Cu - 0.3000 -
Ni - 0.5000 -
Cr - 0.3000 -
Ti - 0.2000 -
V - 0.1500 -
Nb - 0.0700 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -
Mo - 0.1000 -
N - 0.0120 -
Cu - 0.3000 -
Ni - 0.5000 -
Cr - 0.3000 -
Ti - 0.2000 -
V - 0.1500 -
Nb - 0.0700 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -
Mo - 0.1000 -
N - 0.0120 -
Cu - 0.3000 -
Ni - 0.5000 -
Cr - 0.3000 -
Ti - 0.2000 -
V - 0.1500 -
Nb - 0.0700 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -
Mo - 0.1000 -
N - 0.0120 -
Cu - 0.3000 -
Ni - 0.5000 -
Cr - 0.3000 -
Ti - 0.2000 -
V - 0.1500 -
Nb - 0.0700 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -
Mo - 0.1000 -
N - 0.0120 -
Cu - 0.3000 -
Ni - 0.5000 -
Cr - 0.3000 -
Ti - 0.2000 -
V - 0.1500 -
Nb - 0.0700 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -
Mo - 0.1000 -
N - 0.0120 -
Cu - 0.3000 -
Ni - 0.5000 -
Cr - 0.3000 -
Ti - 0.2000 -
V - 0.1500 -
Nb - 0.0700 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -
S - 0.0350 -
P - 0.0350 -
Nb - 0.0700 -
N - 0.0120 -
Cu - 0.3000 -
Ni - 0.5000 -
Ti - 0.2000 -
V - 0.1500 -
Mo - 0.1000 -
Cr - 0.3000 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -
Mo - 0.1000 -
N - 0.0120 -
Cu - 0.3000 -
Ni - 0.5000 -
Cr - 0.3000 -
Ti - 0.2000 -
V - 0.1500 -
Nb - 0.0700 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -

Mechanical Properties of steel grade Q345-A

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
875 (≥) 858 (≥) 13 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade Q345-A

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
23 - -     0.12 -  
416 488 - 43.3 343   -  
824 - 11 11.2   243 222

Heat Treatment of steel grade Q345-A

Heat treated : 1318°C - 1425°C

Technological Curves of steel grade Q345-A

Cross Reference Table (Equivalent Grade) of Q345-A

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