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Q345NS Grade B

China 鞍钢Q/ASB Q345NSGradeB 耐硫酸漏点腐蚀用热连轧钢板和钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345NSGradeB / Q345NS Grade B
Category Grade Standard Region/Area Standard Content
Metals Q345NS Grade B Q/ASB 143 China 耐硫酸漏点腐蚀用热连轧钢板和钢带

Chemical composition(mass fraction)(wt.%) of the Q345NS Grade B

Element Min Max Similar
Ni 0.1000 0.5000 -
Sb 0.0500 0.1600 -
Cr 0.6000 1.2000 -
Cu 0.2500 0.5500 -
S - 0.0150 -
P - 0.0250 -
Mn 0.4000 1.0000 -
Si - 0.5000 -
C - 0.1200 -

Mechanical Properties of steel grade Q345NS Grade B

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)
781 (≥) 365 (≥) 14 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade Q345NS Grade B

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
43 - -     0.21 -  
762 869 - 13.3 334   -  
185 - 33 34.2   313 313

Heat Treatment of steel grade Q345NS Grade B

Heat treated : 1798°C - 1759°C

Technological Curves of steel grade Q345NS Grade B

Cross Reference Table (Equivalent Grade) of Q345NS Grade B

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