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Q345B

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China 舞钢Q/WTB Q345B 以Ti代Mn生产工艺方案 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q345B / Q345B
Category Grade Standard Region/Area Standard Content
Metals Q345B WKZ 577 China 以Ti代Mn生产工艺方案

Chemical composition(mass fraction)(wt.%) of the Q345B

Element Min Max Similar
N - 0.0120 -
Cu - 0.3000 -
Ti - 0.2000 -
V - 0.1500 -
Nb - 0.0700 -
Ni - 0.5000 -
Mo - 0.1000 -
Cr - 0.3000 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -
Al 0.0200 - -
Ti - 0.2000 -
S - 0.0350 -
P - 0.0350 -
Mn - 1.7000 -
Si - 0.5000 -
C - 0.2000 -

Mechanical Properties of steel grade Q345B

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)
758 (≥) 361 (≥) 23 23 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade Q345B

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
14 - -     0.21 -  
487 285 - 11.3 244   -  
983 - 31 11.2   423 411

Heat Treatment of steel grade Q345B

Heat treated : 1362°C - 1615°C

Technological Curves of steel grade Q345B

Cross Reference Table (Equivalent Grade) of Q345B

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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Jiangyou Longhai Special Steel Co.,Ltd.

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