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China GB Q345NS 耐硫酸露点腐蚀钢板和钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345NS / Q345NS
Category Grade Standard Region/Area Standard Content
Metals Q345NS GB/T 28907 China 耐硫酸露点腐蚀钢板和钢带

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

Element Min Max Similar
Si - 0.5500 -
Sb - 0.1500 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.5000 -
Cu 0.2000 0.5000 -
Cr 0.3000 1.2000 -
C - 0.1500 -

Mechanical Properties of steel grade Q345NS

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)
162 (≥) 361 (≥) 22 23 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade Q345NS

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
31 - -     0.13 -  
838 837 - 11.3 342   -  
297 - 22 22.2   414 422

Heat Treatment of steel grade Q345NS

Heat treated : 1817°C - 1321°C

Technological Curves of steel grade Q345NS

Cross Reference Table (Equivalent Grade) of Q345NS

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